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Diffstat (limited to 'vendor/modernc.org/libc/netinet/in/in_linux_arm.go')
-rw-r--r--vendor/modernc.org/libc/netinet/in/in_linux_arm.go2874
1 files changed, 2874 insertions, 0 deletions
diff --git a/vendor/modernc.org/libc/netinet/in/in_linux_arm.go b/vendor/modernc.org/libc/netinet/in/in_linux_arm.go
new file mode 100644
index 0000000..fee7ded
--- /dev/null
+++ b/vendor/modernc.org/libc/netinet/in/in_linux_arm.go
@@ -0,0 +1,2874 @@
+// Code generated by 'ccgo netinet/in/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o netinet/in/in_linux_arm.go -pkgname in', DO NOT EDIT.
+
+package in
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AF_ALG                           = 38
+	AF_APPLETALK                     = 5
+	AF_ASH                           = 18
+	AF_ATMPVC                        = 8
+	AF_ATMSVC                        = 20
+	AF_AX25                          = 3
+	AF_BLUETOOTH                     = 31
+	AF_BRIDGE                        = 7
+	AF_CAIF                          = 37
+	AF_CAN                           = 29
+	AF_DECnet                        = 12
+	AF_ECONET                        = 19
+	AF_FILE                          = 1
+	AF_IB                            = 27
+	AF_IEEE802154                    = 36
+	AF_INET                          = 2
+	AF_INET6                         = 10
+	AF_IPX                           = 4
+	AF_IRDA                          = 23
+	AF_ISDN                          = 34
+	AF_IUCV                          = 32
+	AF_KCM                           = 41
+	AF_KEY                           = 15
+	AF_LLC                           = 26
+	AF_LOCAL                         = 1
+	AF_MAX                           = 45
+	AF_MPLS                          = 28
+	AF_NETBEUI                       = 13
+	AF_NETLINK                       = 16
+	AF_NETROM                        = 6
+	AF_NFC                           = 39
+	AF_PACKET                        = 17
+	AF_PHONET                        = 35
+	AF_PPPOX                         = 24
+	AF_QIPCRTR                       = 42
+	AF_RDS                           = 21
+	AF_ROSE                          = 11
+	AF_ROUTE                         = 16
+	AF_RXRPC                         = 33
+	AF_SECURITY                      = 14
+	AF_SMC                           = 43
+	AF_SNA                           = 22
+	AF_TIPC                          = 30
+	AF_UNIX                          = 1
+	AF_UNSPEC                        = 0
+	AF_VSOCK                         = 40
+	AF_WANPIPE                       = 25
+	AF_X25                           = 9
+	AF_XDP                           = 44
+	BIG_ENDIAN                       = 4321
+	BYTE_ORDER                       = 1234
+	FD_SETSIZE                       = 1024
+	FIOGETOWN                        = 0x8903
+	FIOSETOWN                        = 0x8901
+	INET6_ADDRSTRLEN                 = 46
+	INET_ADDRSTRLEN                  = 16
+	IN_CLASSA_HOST                   = 16777215
+	IN_CLASSA_MAX                    = 128
+	IN_CLASSA_NET                    = 0xff000000
+	IN_CLASSA_NSHIFT                 = 24
+	IN_CLASSB_HOST                   = 65535
+	IN_CLASSB_MAX                    = 65536
+	IN_CLASSB_NET                    = 0xffff0000
+	IN_CLASSB_NSHIFT                 = 16
+	IN_CLASSC_HOST                   = 255
+	IN_CLASSC_NET                    = 0xffffff00
+	IN_CLASSC_NSHIFT                 = 8
+	IN_LOOPBACKNET                   = 127
+	IPV6_2292DSTOPTS                 = 4
+	IPV6_2292HOPLIMIT                = 8
+	IPV6_2292HOPOPTS                 = 3
+	IPV6_2292PKTINFO                 = 2
+	IPV6_2292PKTOPTIONS              = 6
+	IPV6_2292RTHDR                   = 5
+	IPV6_ADDRFORM                    = 1
+	IPV6_ADDR_PREFERENCES            = 72
+	IPV6_ADD_MEMBERSHIP              = 20
+	IPV6_AUTHHDR                     = 10
+	IPV6_AUTOFLOWLABEL               = 70
+	IPV6_CHECKSUM                    = 7
+	IPV6_DONTFRAG                    = 62
+	IPV6_DROP_MEMBERSHIP             = 21
+	IPV6_DSTOPTS                     = 59
+	IPV6_FREEBIND                    = 78
+	IPV6_HDRINCL                     = 36
+	IPV6_HOPLIMIT                    = 52
+	IPV6_HOPOPTS                     = 54
+	IPV6_IPSEC_POLICY                = 34
+	IPV6_JOIN_ANYCAST                = 27
+	IPV6_JOIN_GROUP                  = 20
+	IPV6_LEAVE_ANYCAST               = 28
+	IPV6_LEAVE_GROUP                 = 21
+	IPV6_MINHOPCOUNT                 = 73
+	IPV6_MTU                         = 24
+	IPV6_MTU_DISCOVER                = 23
+	IPV6_MULTICAST_ALL               = 29
+	IPV6_MULTICAST_HOPS              = 18
+	IPV6_MULTICAST_IF                = 17
+	IPV6_MULTICAST_LOOP              = 19
+	IPV6_NEXTHOP                     = 9
+	IPV6_ORIGDSTADDR                 = 74
+	IPV6_PATHMTU                     = 61
+	IPV6_PKTINFO                     = 50
+	IPV6_PMTUDISC_DO                 = 2
+	IPV6_PMTUDISC_DONT               = 0
+	IPV6_PMTUDISC_INTERFACE          = 4
+	IPV6_PMTUDISC_OMIT               = 5
+	IPV6_PMTUDISC_PROBE              = 3
+	IPV6_PMTUDISC_WANT               = 1
+	IPV6_RECVDSTOPTS                 = 58
+	IPV6_RECVERR                     = 25
+	IPV6_RECVFRAGSIZE                = 77
+	IPV6_RECVHOPLIMIT                = 51
+	IPV6_RECVHOPOPTS                 = 53
+	IPV6_RECVORIGDSTADDR             = 74
+	IPV6_RECVPATHMTU                 = 60
+	IPV6_RECVPKTINFO                 = 49
+	IPV6_RECVRTHDR                   = 56
+	IPV6_RECVTCLASS                  = 66
+	IPV6_ROUTER_ALERT                = 22
+	IPV6_ROUTER_ALERT_ISOLATE        = 30
+	IPV6_RTHDR                       = 57
+	IPV6_RTHDRDSTOPTS                = 55
+	IPV6_RTHDR_LOOSE                 = 0
+	IPV6_RTHDR_STRICT                = 1
+	IPV6_RTHDR_TYPE_0                = 0
+	IPV6_RXDSTOPTS                   = 59
+	IPV6_RXHOPOPTS                   = 54
+	IPV6_TCLASS                      = 67
+	IPV6_TRANSPARENT                 = 75
+	IPV6_UNICAST_HOPS                = 16
+	IPV6_UNICAST_IF                  = 76
+	IPV6_V6ONLY                      = 26
+	IPV6_XFRM_POLICY                 = 35
+	IP_ADD_MEMBERSHIP                = 35
+	IP_ADD_SOURCE_MEMBERSHIP         = 39
+	IP_BIND_ADDRESS_NO_PORT          = 24
+	IP_BLOCK_SOURCE                  = 38
+	IP_CHECKSUM                      = 23
+	IP_DEFAULT_MULTICAST_LOOP        = 1
+	IP_DEFAULT_MULTICAST_TTL         = 1
+	IP_DROP_MEMBERSHIP               = 36
+	IP_DROP_SOURCE_MEMBERSHIP        = 40
+	IP_FREEBIND                      = 15
+	IP_HDRINCL                       = 3
+	IP_IPSEC_POLICY                  = 16
+	IP_MAX_MEMBERSHIPS               = 20
+	IP_MINTTL                        = 21
+	IP_MSFILTER                      = 41
+	IP_MTU                           = 14
+	IP_MTU_DISCOVER                  = 10
+	IP_MULTICAST_ALL                 = 49
+	IP_MULTICAST_IF                  = 32
+	IP_MULTICAST_LOOP                = 34
+	IP_MULTICAST_TTL                 = 33
+	IP_NODEFRAG                      = 22
+	IP_OPTIONS                       = 4
+	IP_ORIGDSTADDR                   = 20
+	IP_PASSSEC                       = 18
+	IP_PKTINFO                       = 8
+	IP_PKTOPTIONS                    = 9
+	IP_PMTUDISC                      = 10
+	IP_PMTUDISC_DO                   = 2
+	IP_PMTUDISC_DONT                 = 0
+	IP_PMTUDISC_INTERFACE            = 4
+	IP_PMTUDISC_OMIT                 = 5
+	IP_PMTUDISC_PROBE                = 3
+	IP_PMTUDISC_WANT                 = 1
+	IP_RECVERR                       = 11
+	IP_RECVFRAGSIZE                  = 25
+	IP_RECVOPTS                      = 6
+	IP_RECVORIGDSTADDR               = 20
+	IP_RECVRETOPTS                   = 7
+	IP_RECVTOS                       = 13
+	IP_RECVTTL                       = 12
+	IP_RETOPTS                       = 7
+	IP_ROUTER_ALERT                  = 5
+	IP_TOS                           = 1
+	IP_TRANSPARENT                   = 19
+	IP_TTL                           = 2
+	IP_UNBLOCK_SOURCE                = 37
+	IP_UNICAST_IF                    = 50
+	IP_XFRM_POLICY                   = 17
+	LITTLE_ENDIAN                    = 1234
+	MCAST_BLOCK_SOURCE               = 43
+	MCAST_EXCLUDE                    = 0
+	MCAST_INCLUDE                    = 1
+	MCAST_JOIN_GROUP                 = 42
+	MCAST_JOIN_SOURCE_GROUP          = 46
+	MCAST_LEAVE_GROUP                = 45
+	MCAST_LEAVE_SOURCE_GROUP         = 47
+	MCAST_MSFILTER                   = 48
+	MCAST_UNBLOCK_SOURCE             = 44
+	PDP_ENDIAN                       = 3412
+	PF_ALG                           = 38
+	PF_APPLETALK                     = 5
+	PF_ASH                           = 18
+	PF_ATMPVC                        = 8
+	PF_ATMSVC                        = 20
+	PF_AX25                          = 3
+	PF_BLUETOOTH                     = 31
+	PF_BRIDGE                        = 7
+	PF_CAIF                          = 37
+	PF_CAN                           = 29
+	PF_DECnet                        = 12
+	PF_ECONET                        = 19
+	PF_FILE                          = 1
+	PF_IB                            = 27
+	PF_IEEE802154                    = 36
+	PF_INET                          = 2
+	PF_INET6                         = 10
+	PF_IPX                           = 4
+	PF_IRDA                          = 23
+	PF_ISDN                          = 34
+	PF_IUCV                          = 32
+	PF_KCM                           = 41
+	PF_KEY                           = 15
+	PF_LLC                           = 26
+	PF_LOCAL                         = 1
+	PF_MAX                           = 45
+	PF_MPLS                          = 28
+	PF_NETBEUI                       = 13
+	PF_NETLINK                       = 16
+	PF_NETROM                        = 6
+	PF_NFC                           = 39
+	PF_PACKET                        = 17
+	PF_PHONET                        = 35
+	PF_PPPOX                         = 24
+	PF_QIPCRTR                       = 42
+	PF_RDS                           = 21
+	PF_ROSE                          = 11
+	PF_ROUTE                         = 16
+	PF_RXRPC                         = 33
+	PF_SECURITY                      = 14
+	PF_SMC                           = 43
+	PF_SNA                           = 22
+	PF_TIPC                          = 30
+	PF_UNIX                          = 1
+	PF_UNSPEC                        = 0
+	PF_VSOCK                         = 40
+	PF_WANPIPE                       = 25
+	PF_X25                           = 9
+	PF_XDP                           = 44
+	SCM_TIMESTAMPING_OPT_STATS       = 54
+	SCM_TIMESTAMPING_PKTINFO         = 58
+	SCM_TXTIME                       = 61
+	SCM_WIFI_STATUS                  = 41
+	SIOCATMARK                       = 0x8905
+	SIOCGPGRP                        = 0x8904
+	SIOCGSTAMP                       = 0x8906
+	SIOCGSTAMPNS                     = 0x8907
+	SIOCSPGRP                        = 0x8902
+	SOL_AAL                          = 265
+	SOL_ALG                          = 279
+	SOL_ATM                          = 264
+	SOL_BLUETOOTH                    = 274
+	SOL_CAIF                         = 278
+	SOL_DCCP                         = 269
+	SOL_DECNET                       = 261
+	SOL_ICMPV6                       = 58
+	SOL_IP                           = 0
+	SOL_IPV6                         = 41
+	SOL_IRDA                         = 266
+	SOL_IUCV                         = 277
+	SOL_KCM                          = 281
+	SOL_LLC                          = 268
+	SOL_NETBEUI                      = 267
+	SOL_NETLINK                      = 270
+	SOL_NFC                          = 280
+	SOL_PACKET                       = 263
+	SOL_PNPIPE                       = 275
+	SOL_PPPOL2TP                     = 273
+	SOL_RAW                          = 255
+	SOL_RDS                          = 276
+	SOL_RXRPC                        = 272
+	SOL_SOCKET                       = 1
+	SOL_TIPC                         = 271
+	SOL_TLS                          = 282
+	SOL_X25                          = 262
+	SOL_XDP                          = 283
+	SOMAXCONN                        = 4096
+	SO_ACCEPTCONN                    = 30
+	SO_ATTACH_BPF                    = 50
+	SO_ATTACH_FILTER                 = 26
+	SO_ATTACH_REUSEPORT_CBPF         = 51
+	SO_ATTACH_REUSEPORT_EBPF         = 52
+	SO_BINDTODEVICE                  = 25
+	SO_BINDTOIFINDEX                 = 62
+	SO_BPF_EXTENSIONS                = 48
+	SO_BROADCAST                     = 6
+	SO_BSDCOMPAT                     = 14
+	SO_BUSY_POLL                     = 46
+	SO_CNX_ADVICE                    = 53
+	SO_COOKIE                        = 57
+	SO_DEBUG                         = 1
+	SO_DETACH_BPF                    = 27
+	SO_DETACH_FILTER                 = 27
+	SO_DETACH_REUSEPORT_BPF          = 68
+	SO_DOMAIN                        = 39
+	SO_DONTROUTE                     = 5
+	SO_ERROR                         = 4
+	SO_GET_FILTER                    = 26
+	SO_INCOMING_CPU                  = 49
+	SO_INCOMING_NAPI_ID              = 56
+	SO_KEEPALIVE                     = 9
+	SO_LINGER                        = 13
+	SO_LOCK_FILTER                   = 44
+	SO_MARK                          = 36
+	SO_MAX_PACING_RATE               = 47
+	SO_MEMINFO                       = 55
+	SO_NOFCS                         = 43
+	SO_NO_CHECK                      = 11
+	SO_OOBINLINE                     = 10
+	SO_PASSCRED                      = 16
+	SO_PASSSEC                       = 34
+	SO_PEEK_OFF                      = 42
+	SO_PEERCRED                      = 17
+	SO_PEERGROUPS                    = 59
+	SO_PEERNAME                      = 28
+	SO_PEERSEC                       = 31
+	SO_PRIORITY                      = 12
+	SO_PROTOCOL                      = 38
+	SO_RCVBUF                        = 8
+	SO_RCVBUFFORCE                   = 33
+	SO_RCVLOWAT                      = 18
+	SO_RCVTIMEO_NEW                  = 66
+	SO_RCVTIMEO_OLD                  = 20
+	SO_REUSEADDR                     = 2
+	SO_REUSEPORT                     = 15
+	SO_RXQ_OVFL                      = 40
+	SO_SECURITY_AUTHENTICATION       = 22
+	SO_SECURITY_ENCRYPTION_NETWORK   = 24
+	SO_SECURITY_ENCRYPTION_TRANSPORT = 23
+	SO_SELECT_ERR_QUEUE              = 45
+	SO_SNDBUF                        = 7
+	SO_SNDBUFFORCE                   = 32
+	SO_SNDLOWAT                      = 19
+	SO_SNDTIMEO_NEW                  = 67
+	SO_SNDTIMEO_OLD                  = 21
+	SO_TIMESTAMPING_NEW              = 65
+	SO_TIMESTAMPING_OLD              = 37
+	SO_TIMESTAMPNS_NEW               = 64
+	SO_TIMESTAMPNS_OLD               = 35
+	SO_TIMESTAMP_NEW                 = 63
+	SO_TIMESTAMP_OLD                 = 29
+	SO_TXTIME                        = 61
+	SO_TYPE                          = 3
+	SO_WIFI_STATUS                   = 41
+	SO_ZEROCOPY                      = 60
+	X_ATFILE_SOURCE                  = 1
+	X_BITS_BYTESWAP_H                = 1
+	X_BITS_ENDIANNESS_H              = 1
+	X_BITS_ENDIAN_H                  = 1
+	X_BITS_PTHREADTYPES_ARCH_H       = 1
+	X_BITS_PTHREADTYPES_COMMON_H     = 1
+	X_BITS_SOCKADDR_H                = 1
+	X_BITS_STDINT_INTN_H             = 1
+	X_BITS_STDINT_UINTN_H            = 1
+	X_BITS_TIME64_H                  = 1
+	X_BITS_TYPESIZES_H               = 1
+	X_BITS_TYPES_H                   = 1
+	X_BITS_UINTN_IDENTITY_H          = 1
+	X_BSD_SIZE_T_                    = 0
+	X_BSD_SIZE_T_DEFINED_            = 0
+	X_DEFAULT_SOURCE                 = 1
+	X_ENDIAN_H                       = 1
+	X_FEATURES_H                     = 1
+	X_FILE_OFFSET_BITS               = 64
+	X_GCC_SIZE_T                     = 0
+	X_LINUX_POSIX_TYPES_H            = 0
+	X_NETINET_IN_H                   = 1
+	X_POSIX_C_SOURCE                 = 200809
+	X_POSIX_SOURCE                   = 1
+	X_SIZET_                         = 0
+	X_SIZE_T                         = 0
+	X_SIZE_T_                        = 0
+	X_SIZE_T_DECLARED                = 0
+	X_SIZE_T_DEFINED                 = 0
+	X_SIZE_T_DEFINED_                = 0
+	X_SS_SIZE                        = 128
+	X_STDC_PREDEF_H                  = 1
+	X_STRUCT_TIMESPEC                = 1
+	X_SYS_CDEFS_H                    = 1
+	X_SYS_SELECT_H                   = 1
+	X_SYS_SIZE_T_H                   = 0
+	X_SYS_SOCKET_H                   = 1
+	X_SYS_TYPES_H                    = 1
+	X_THREAD_MUTEX_INTERNAL_H        = 1
+	X_THREAD_SHARED_TYPES_H          = 1
+	X_T_SIZE                         = 0
+	X_T_SIZE_                        = 0
+	Linux                            = 1
+	Unix                             = 1
+)
+
+// Bits in the FLAGS argument to `send', `recv', et al.
+const ( /* socket.h:200:1: */
+	MSG_OOB        = 1  // Process out-of-band data.
+	MSG_PEEK       = 2  // Peek at incoming messages.
+	MSG_DONTROUTE  = 4  // Don't use local routing.
+	MSG_CTRUNC     = 8  // Control data lost before delivery.
+	MSG_PROXY      = 16 // Supply or ask second address.
+	MSG_TRUNC      = 32
+	MSG_DONTWAIT   = 64  // Nonblocking IO.
+	MSG_EOR        = 128 // End of record.
+	MSG_WAITALL    = 256 // Wait for a full request.
+	MSG_FIN        = 512
+	MSG_SYN        = 1024
+	MSG_CONFIRM    = 2048 // Confirm path validity.
+	MSG_RST        = 4096
+	MSG_ERRQUEUE   = 8192      // Fetch message from error queue.
+	MSG_NOSIGNAL   = 16384     // Do not generate SIGPIPE.
+	MSG_MORE       = 32768     // Sender will send more.
+	MSG_WAITFORONE = 65536     // Wait for at least one packet to return.
+	MSG_BATCH      = 262144    // sendmmsg: more messages coming.
+	MSG_ZEROCOPY   = 67108864  // Use user data in kernel path.
+	MSG_FASTOPEN   = 536870912 // Send data in TCP SYN.
+
+	MSG_CMSG_CLOEXEC = 1073741824
+)
+
+// Socket level message types.  This must match the definitions in
+//
+//	<linux/socket.h>.
+const ( /* socket.h:332:1: */
+	SCM_RIGHTS = 1
+)
+
+// Get the architecture-dependent definition of enum __socket_type.
+// Define enum __socket_type for generic Linux.
+//    Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Types of sockets.
+const ( /* socket_type.h:24:1: */
+	SOCK_STREAM = 1 // Sequenced, reliable, connection-based
+	// 				   byte streams.
+	SOCK_DGRAM = 2 // Connectionless, unreliable datagrams
+	// 				   of fixed maximum length.
+	SOCK_RAW       = 3 // Raw protocol interface.
+	SOCK_RDM       = 4 // Reliably-delivered messages.
+	SOCK_SEQPACKET = 5 // Sequenced, reliable, connection-based,
+	// 				   datagrams of fixed maximum length.
+	SOCK_DCCP   = 6  // Datagram Congestion Control Protocol.
+	SOCK_PACKET = 10 // Linux specific way of getting packets
+	// 				   at the dev level.  For writing rarp and
+	// 				   other similar things on the user level.
+
+	// Flags to be ORed into the type parameter of socket and socketpair and
+	//      used for the flags parameter of paccept.
+
+	SOCK_CLOEXEC = 524288 // Atomically set close-on-exec flag for the
+	// 				   new descriptor(s).
+	SOCK_NONBLOCK = 2048
+)
+
+// Standard well-known ports.
+const ( /* in.h:122:1: */
+	IPPORT_ECHO       = 7  // Echo service.
+	IPPORT_DISCARD    = 9  // Discard transmissions service.
+	IPPORT_SYSTAT     = 11 // System status service.
+	IPPORT_DAYTIME    = 13 // Time of day service.
+	IPPORT_NETSTAT    = 15 // Network status service.
+	IPPORT_FTP        = 21 // File Transfer Protocol.
+	IPPORT_TELNET     = 23 // Telnet protocol.
+	IPPORT_SMTP       = 25 // Simple Mail Transfer Protocol.
+	IPPORT_TIMESERVER = 37 // Timeserver service.
+	IPPORT_NAMESERVER = 42 // Domain Name Service.
+	IPPORT_WHOIS      = 43 // Internet Whois service.
+	IPPORT_MTP        = 57
+
+	IPPORT_TFTP    = 69 // Trivial File Transfer Protocol.
+	IPPORT_RJE     = 77
+	IPPORT_FINGER  = 79 // Finger service.
+	IPPORT_TTYLINK = 87
+	IPPORT_SUPDUP  = 95 // SUPDUP protocol.
+
+	IPPORT_EXECSERVER  = 512 // execd service.
+	IPPORT_LOGINSERVER = 513 // rlogind service.
+	IPPORT_CMDSERVER   = 514
+	IPPORT_EFSSERVER   = 520
+
+	// UDP ports.
+	IPPORT_BIFFUDP     = 512
+	IPPORT_WHOSERVER   = 513
+	IPPORT_ROUTESERVER = 520
+
+	// Ports less than this value are reserved for privileged processes.
+	IPPORT_RESERVED = 1024
+
+	// Ports greater this value are reserved for (non-privileged) servers.
+	IPPORT_USERRESERVED = 5000
+)
+
+// Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+
+// Advanced API (RFC3542) (1).
+
+// Advanced API (RFC3542) (2).
+
+// RFC5014.
+
+// RFC5082.
+
+// Obsolete synonyms for the above.
+
+// IPV6_MTU_DISCOVER values.
+
+// Socket level values for IPv6.
+
+// Routing header options for IPv6.
+
+// Standard well-defined IP protocols.
+const ( /* in.h:40:1: */
+	IPPROTO_IP      = 0   // Dummy protocol for TCP.
+	IPPROTO_ICMP    = 1   // Internet Control Message Protocol.
+	IPPROTO_IGMP    = 2   // Internet Group Management Protocol.
+	IPPROTO_IPIP    = 4   // IPIP tunnels (older KA9Q tunnels use 94).
+	IPPROTO_TCP     = 6   // Transmission Control Protocol.
+	IPPROTO_EGP     = 8   // Exterior Gateway Protocol.
+	IPPROTO_PUP     = 12  // PUP protocol.
+	IPPROTO_UDP     = 17  // User Datagram Protocol.
+	IPPROTO_IDP     = 22  // XNS IDP protocol.
+	IPPROTO_TP      = 29  // SO Transport Protocol Class 4.
+	IPPROTO_DCCP    = 33  // Datagram Congestion Control Protocol.
+	IPPROTO_IPV6    = 41  // IPv6 header.
+	IPPROTO_RSVP    = 46  // Reservation Protocol.
+	IPPROTO_GRE     = 47  // General Routing Encapsulation.
+	IPPROTO_ESP     = 50  // encapsulating security payload.
+	IPPROTO_AH      = 51  // authentication header.
+	IPPROTO_MTP     = 92  // Multicast Transport Protocol.
+	IPPROTO_BEETPH  = 94  // IP option pseudo header for BEET.
+	IPPROTO_ENCAP   = 98  // Encapsulation Header.
+	IPPROTO_PIM     = 103 // Protocol Independent Multicast.
+	IPPROTO_COMP    = 108 // Compression Header Protocol.
+	IPPROTO_SCTP    = 132 // Stream Control Transmission Protocol.
+	IPPROTO_UDPLITE = 136 // UDP-Lite protocol.
+	IPPROTO_MPLS    = 137 // MPLS in IP.
+	IPPROTO_RAW     = 255 // Raw IP packets.
+	IPPROTO_MAX     = 256
+)
+
+// If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
+//
+//	network headers first and we should use those ABI-identical definitions
+//	instead of our own, otherwise 0.
+const ( /* in.h:99:1: */
+	IPPROTO_HOPOPTS  = 0  // IPv6 Hop-by-Hop options.
+	IPPROTO_ROUTING  = 43 // IPv6 routing header.
+	IPPROTO_FRAGMENT = 44 // IPv6 fragmentation header.
+	IPPROTO_ICMPV6   = 58 // ICMPv6.
+	IPPROTO_NONE     = 59 // IPv6 no next header.
+	IPPROTO_DSTOPTS  = 60 // IPv6 destination options.
+	IPPROTO_MH       = 135
+)
+
+// The following constants should be used for the second parameter of
+//
+//	`shutdown'.
+const ( /* socket.h:41:1: */
+	SHUT_RD   = 0 // No more receptions.
+	SHUT_WR   = 1 // No more transmissions.
+	SHUT_RDWR = 2
+)
+
+type Ptrdiff_t = int32 /* <builtin>:3:26 */
+
+type Size_t = uint32 /* <builtin>:9:23 */
+
+type Wchar_t = uint32 /* <builtin>:15:24 */
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    anymore supported.
+
+// Some user header file might have defined this before.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this works only with
+//    gcc 2.8.x and egcs.  For gcc 3.2 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// Compilers that are not clang may object to
+//        #if defined __clang__ && __has_extension(...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC has various useful declarations that can be made with the
+//    `__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonull function attribute allows to mark pointer parameters which
+//    must not be NULL.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 supports this.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This header is included by <sys/cdefs.h>.
+//
+//    If long double is ABI-compatible with double, it should define
+//    __NO_LONG_DOUBLE_MATH to 1; otherwise, it should leave
+//    __NO_LONG_DOUBLE_MATH undefined.
+//
+//    If this build of the GNU C Library supports both long double
+//    ABI-compatible with double and some other long double format not
+//    ABI-compatible with double, it should define
+//    __LONG_DOUBLE_MATH_OPTIONAL to 1; otherwise, it should leave
+//    __LONG_DOUBLE_MATH_OPTIONAL undefined.
+//
+//    If __NO_LONG_DOUBLE_MATH is already defined, this header must not
+//    define anything; this is needed to work with the definition of
+//    __NO_LONG_DOUBLE_MATH in nldbl-compat.h.
+
+// In the default version of this header, long double is
+//    ABI-compatible with double.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// Define uintN_t types.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, general case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Size in bits of the 'time_t' type of the default ABI.
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint32  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:47:44 */
+type X__uint64_t = uint64 /* types.h:48:46 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:66:37 */
+type X__u_quad_t = uint64 /* types.h:67:46 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:75:37 */
+type X__uintmax_t = uint64 /* types.h:76:46 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// We want __extension__ before typedef's that use nonstandard base types
+//    such as `long long' in C89 mode.
+// bits/typesizes.h -- underlying types for *_t.  Generic version.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// Define a 64-bit time type alongsize the 32-bit one.
+
+type X__dev_t = X__uint64_t                /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint32                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = X__uint64_t              /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int32                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = X__int64_t               /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int32                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint32                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = X__uint64_t             /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int32                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int32                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:168:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:171:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:174:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int32        /* types.h:179:28 */
+type X__blkcnt64_t = X__int64_t /* types.h:180:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint32        /* types.h:183:30 */
+type X__fsblkcnt64_t = X__uint64_t /* types.h:184:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint32        /* types.h:187:30 */
+type X__fsfilcnt64_t = X__uint64_t /* types.h:188:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int32 /* types.h:191:28 */
+
+type X__ssize_t = int32 /* types.h:193:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int32 /* types.h:196:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint32 /* types.h:198:33 */
+
+// These few don't really vary by system, they always correspond
+//
+//	to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int32 /* types.h:206:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:209:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//
+//	even in the presence of asynchronous interrupts.
+//	It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//
+//	narrow only for consistency with the old way of widening too-narrow
+//	types.  User code should never use __time64_t.
+type X__time64_t = X__int64_t /* types.h:222:28 */
+
+type Uint8_t = X__uint8_t   /* stdint-uintn.h:24:19 */
+type Uint16_t = X__uint16_t /* stdint-uintn.h:25:20 */
+type Uint32_t = X__uint32_t /* stdint-uintn.h:26:20 */
+type Uint64_t = X__uint64_t /* stdint-uintn.h:27:20 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Structure for scatter/gather I/O.
+type Iovec = struct {
+	Fiov_base uintptr
+	Fiov_len  Size_t
+} /* struct_iovec.h:26:1 */
+
+// Copyright (C) 1989-2020 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This operating system-specific header file defines the SOCK_*, PF_*,
+//    AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
+//    `struct msghdr', and `struct linger' types.
+// System-specific socket constants and types.  Linux version.
+//    Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2020 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:7:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Copyright (C) 1989-2020 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint32  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [32]uint32 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//
+//	microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//
+//	has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:10:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int32 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [32]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  Generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  Generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__kind   int32
+	F__nusers uint32
+	F__20     struct{ F__spins int32 }
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// Default read-write lock implementation struct definitions.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX read-write lock.  New ports are expected
+//    to use the default layout, however archictetures can redefine it to add
+//    arch-specific extensions (such as lock-elision).  The struct have a size
+//    of 32 bytes on both LP32 and LP64 architectures.
+
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__flags         uint8
+	F__shared        uint8
+	F__pad1          uint8
+	F__pad2          uint8
+	F__cur_writer    int32
+} /* struct_rwlock.h:29:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//
+//	exposed on purpose.
+type Pthread_t = uint32 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//
+//	type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//
+//	the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [36]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//
+//	structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//
+//	deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [20]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Type for length arguments in socket calls.
+type Socklen_t = X__socklen_t /* socket.h:33:21 */
+
+// Protocol families.
+
+// Address families.
+
+// Socket level values.  Others are defined in the appropriate headers.
+//
+//    XXX These definitions also should go into the appropriate headers as
+//    far as they are available.
+
+// Maximum queue length specifiable by listen.
+
+// Get the definition of the macro to define the common sockaddr members.
+// Definition of struct sockaddr_* common members and sizes, generic version.
+//    Copyright (C) 1995-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/socket.h> instead.
+
+// POSIX.1g specifies this type name for the `sa_family' member.
+type Sa_family_t = uint16 /* sockaddr.h:28:28 */
+
+// This macro is used to declare the initial common members
+//    of the data types used for socket addresses, `struct sockaddr',
+//    `struct sockaddr_in', `struct sockaddr_un', etc.
+
+// Size of struct sockaddr_storage.
+
+// Structure describing a generic socket address.
+type Sockaddr = struct {
+	Fsa_family Sa_family_t
+	Fsa_data   [14]uint8
+} /* socket.h:178:1 */
+
+// Structure large enough to hold any socket address (with the historical
+//    exception of AF_UNIX).
+
+type Sockaddr_storage = struct {
+	Fss_family    Sa_family_t
+	F__ss_padding [122]uint8
+	F__ss_align   uint32
+} /* socket.h:191:1 */
+
+// Structure describing messages sent by
+//
+//	`sendmsg' and received by `recvmsg'.
+type Msghdr = struct {
+	Fmsg_name       uintptr
+	Fmsg_namelen    Socklen_t
+	Fmsg_iov        uintptr
+	Fmsg_iovlen     Size_t
+	Fmsg_control    uintptr
+	Fmsg_controllen Size_t
+	Fmsg_flags      int32
+} /* socket.h:257:1 */
+
+// Structure used for storage of ancillary data object information.
+type Cmsghdr = struct {
+	F__ccgo_pad1 [0]uint32
+	Fcmsg_len    Size_t
+	Fcmsg_level  int32
+	Fcmsg_type   int32
+} /* socket.h:275:1 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// This allows for 1024 file descriptors: if NR_OPEN is ever grown
+// beyond that you'll have to change this too. But 1024 fd's seem to be
+// enough even for such "real" unices like OSF/1, so hopefully this is
+// one limit that doesn't have to be changed [again].
+//
+// Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
+// <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
+// place for them. Solved by having dummy defines in <sys/time.h>.
+
+// This macro may have been defined in <gnu/types.h>. But we always
+// use the one here.
+
+type X__kernel_fd_set = struct{ Ffds_bits [32]uint32 } /* posix_types.h:27:3 */
+
+// Type of a signal handler.
+type X__kernel_sighandler_t = uintptr /* posix_types.h:30:14 */
+
+// Type of a SYSV IPC key.
+type X__kernel_key_t = int32 /* posix_types.h:33:13 */
+type X__kernel_mqd_t = int32 /* posix_types.h:34:13 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+//  arch/arm/include/asm/posix_types.h
+//
+//  Copyright (C) 1996-1998 Russell King.
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+//  Changelog:
+//   27-06-1996	RMK	Created
+
+// This file is generally used by user-level software, so you need to
+// be a little careful about namespace pollution etc.  Also, we cannot
+// assume GCC is being used.
+
+type X__kernel_mode_t = uint16 /* posix_types.h:23:25 */
+
+type X__kernel_ipc_pid_t = uint16 /* posix_types.h:26:25 */
+
+type X__kernel_uid_t = uint16 /* posix_types.h:29:25 */
+type X__kernel_gid_t = uint16 /* posix_types.h:30:25 */
+
+type X__kernel_old_dev_t = uint16 /* posix_types.h:33:25 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// There seems to be no way of detecting this automatically from user
+// space, so 64 bit architectures should override this in their
+// bitsperlong.h. In particular, an architecture that supports
+// both 32 and 64 bit user space must not rely on CONFIG_64BIT
+// to decide it, but rather check a compiler provided macro.
+
+// This file is generally used by user-level software, so you need to
+// be a little careful about namespace pollution etc.
+//
+// First the types that are often defined in different ways across
+// architectures, so that you can override them.
+
+type X__kernel_long_t = int32   /* posix_types.h:15:15 */
+type X__kernel_ulong_t = uint32 /* posix_types.h:16:23 */
+
+type X__kernel_ino_t = X__kernel_ulong_t /* posix_types.h:20:26 */
+
+type X__kernel_pid_t = int32 /* posix_types.h:28:14 */
+
+type X__kernel_suseconds_t = X__kernel_long_t /* posix_types.h:41:26 */
+
+type X__kernel_daddr_t = int32 /* posix_types.h:45:14 */
+
+type X__kernel_uid32_t = uint32 /* posix_types.h:49:22 */
+type X__kernel_gid32_t = uint32 /* posix_types.h:50:22 */
+
+type X__kernel_old_uid_t = X__kernel_uid_t /* posix_types.h:54:24 */
+type X__kernel_old_gid_t = X__kernel_gid_t /* posix_types.h:55:24 */
+
+// Most 32 bit architectures use "unsigned int" size_t,
+// and all 64 bit architectures use "unsigned long" size_t.
+type X__kernel_size_t = uint32   /* posix_types.h:68:22 */
+type X__kernel_ssize_t = int32   /* posix_types.h:69:14 */
+type X__kernel_ptrdiff_t = int32 /* posix_types.h:70:14 */
+
+type X__kernel_fsid_t = struct{ Fval [2]int32 } /* posix_types.h:81:3 */
+
+// anything below here should be completely generic
+type X__kernel_off_t = X__kernel_long_t      /* posix_types.h:87:25 */
+type X__kernel_loff_t = int64                /* posix_types.h:88:19 */
+type X__kernel_old_time_t = X__kernel_long_t /* posix_types.h:89:25 */
+type X__kernel_time_t = X__kernel_long_t     /* posix_types.h:90:25 */
+type X__kernel_time64_t = int64              /* posix_types.h:91:19 */
+type X__kernel_clock_t = X__kernel_long_t    /* posix_types.h:92:25 */
+type X__kernel_timer_t = int32               /* posix_types.h:93:14 */
+type X__kernel_clockid_t = int32             /* posix_types.h:94:14 */
+type X__kernel_caddr_t = uintptr             /* posix_types.h:95:14 */
+type X__kernel_uid16_t = uint16              /* posix_types.h:96:24 */
+type X__kernel_gid16_t = uint16              /* posix_types.h:97:24 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// Socket-level I/O control calls.
+
+// For setsockopt(2)
+
+// Security levels - as per NRL IPv6 - don't actually do anything
+
+// Socket filtering
+
+// Instruct lower device to use last 4-bytes of skb data as FCS
+
+// Structure used to manipulate the SO_LINGER option.
+type Linger = struct {
+	Fl_onoff  int32
+	Fl_linger int32
+} /* socket.h:361:1 */
+
+// This is the 4.3 BSD `struct sockaddr' format, which is used as wire
+//
+//	format in the grotty old 4.3 `talk' protocol.
+type Osockaddr = struct {
+	Fsa_family uint16
+	Fsa_data   [14]uint8
+} /* struct_osockaddr.h:6:1 */
+
+// Define some macros helping to catch buffer overflows.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Internet address.
+type In_addr_t = Uint32_t                  /* in.h:30:18 */
+type In_addr = struct{ Fs_addr In_addr_t } /* in.h:31:1 */
+
+// Get system-specific definitions.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Linux version.
+
+// If the application has already included linux/in6.h from a linux-based
+//    kernel then we will not define the IPv6 IPPROTO_* defines, in6_addr (nor the
+//    defines), sockaddr_in6, or ipv6_mreq. Same for in6_ptkinfo or ip6_mtuinfo
+//    in linux/ipv6.h. The ABI used by the linux-kernel and glibc match exactly.
+//    Neither the linux kernel nor glibc should break this ABI without coordination.
+//    In upstream kernel 56c176c9 the _UAPI prefix was stripped so we need to check
+//    for _LINUX_IN6_H and _IPV6_H now, and keep checking the old versions for
+//    maximum backwards compatibility.
+
+// Options for use with `getsockopt' and `setsockopt' at the IP level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+// For BSD compatibility.
+
+// TProxy original addresses
+
+// IP_MTU_DISCOVER arguments.
+// Always use interface mtu (ignores dst pmtu) but don't set DF flag.
+//    Also incoming ICMP frag_needed notifications will be ignored on
+//    this socket to prevent accepting spoofed ones.
+// Like IP_PMTUDISC_INTERFACE but allow packets to be fragmented.
+
+// To select the IP level.
+
+// Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
+//
+//	The `ip_dst' field is used for the first-hop gateway when using a
+//	source route (this gets put into the header proper).
+type Ip_opts = struct {
+	Fip_dst  struct{ Fs_addr In_addr_t }
+	Fip_opts [40]uint8
+} /* in.h:142:1 */
+
+// Like `struct ip_mreq' but including interface specification by index.
+type Ip_mreqn = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_address   struct{ Fs_addr In_addr_t }
+	Fimr_ifindex   int32
+} /* in.h:149:1 */
+
+// Structure used for IP_PKTINFO.
+type In_pktinfo = struct {
+	Fipi_ifindex  int32
+	Fipi_spec_dst struct{ Fs_addr In_addr_t }
+	Fipi_addr     struct{ Fs_addr In_addr_t }
+} /* in.h:157:1 */
+
+// Type to represent a port.
+type In_port_t = Uint16_t /* in.h:119:18 */
+
+// Definitions of the bits in an Internet address integer.
+//
+//    On subnets, host and network parts are found according to
+//    the subnet mask, not these masks.
+
+// Address to accept any incoming messages.
+// Address to send to all hosts.
+// Address indicating an error return.
+
+// Network number for local host loopback.
+// Address to loopback in software to local host.
+
+// Defines for Multicast INADDR.
+
+// IPv6 address
+type In6_addr = struct {
+	F__in6_u struct {
+		F__ccgo_pad1 [0]uint32
+		F__u6_addr8  [16]Uint8_t
+	}
+} /* in.h:212:1 */
+
+// ::1
+
+// Structure describing an Internet socket address.
+type Sockaddr_in = struct {
+	Fsin_family Sa_family_t
+	Fsin_port   In_port_t
+	Fsin_addr   struct{ Fs_addr In_addr_t }
+	Fsin_zero   [8]uint8
+} /* in.h:238:1 */
+
+// Ditto, for IPv6.
+type Sockaddr_in6 = struct {
+	Fsin6_family   Sa_family_t
+	Fsin6_port     In_port_t
+	Fsin6_flowinfo Uint32_t
+	Fsin6_addr     struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fsin6_scope_id Uint32_t
+} /* in.h:253:1 */
+
+// IPv4 multicast request.
+type Ip_mreq = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_interface struct{ Fs_addr In_addr_t }
+} /* in.h:265:1 */
+
+type Ip_mreq_source = struct {
+	Fimr_multiaddr  struct{ Fs_addr In_addr_t }
+	Fimr_interface  struct{ Fs_addr In_addr_t }
+	Fimr_sourceaddr struct{ Fs_addr In_addr_t }
+} /* in.h:274:1 */
+
+// Likewise, for IPv6.
+type Ipv6_mreq = struct {
+	Fipv6mr_multiaddr struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fipv6mr_interface uint32
+} /* in.h:289:1 */
+
+// Multicast group request.
+type Group_req = struct {
+	Fgr_interface Uint32_t
+	Fgr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [122]uint8
+		F__ss_align   uint32
+	}
+} /* in.h:301:1 */
+
+type Group_source_req = struct {
+	Fgsr_interface Uint32_t
+	Fgsr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [122]uint8
+		F__ss_align   uint32
+	}
+	Fgsr_source struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [122]uint8
+		F__ss_align   uint32
+	}
+} /* in.h:310:1 */
+
+// Full-state filter operations.
+type Ip_msfilter = struct {
+	Fimsf_multiaddr struct{ Fs_addr In_addr_t }
+	Fimsf_interface struct{ Fs_addr In_addr_t }
+	Fimsf_fmode     Uint32_t
+	Fimsf_numsrc    Uint32_t
+	Fimsf_slist     [1]struct{ Fs_addr In_addr_t }
+} /* in.h:324:1 */
+
+type Group_filter = struct {
+	Fgf_interface Uint32_t
+	Fgf_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [122]uint8
+		F__ss_align   uint32
+	}
+	Fgf_fmode  Uint32_t
+	Fgf_numsrc Uint32_t
+	Fgf_slist  [1]struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [122]uint8
+		F__ss_align   uint32
+	}
+} /* in.h:345:1 */
+
+var _ uint8 /* gen.c:2:13: */