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| author | Florian Weimer <fweimer@redhat.com> | 2024-05-18 09:33:19 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2024-05-27 17:25:13 +0200 |
| commit | 26e7005728f0eea2972474e6be2905c467661237 (patch) | |
| tree | cc9b1d51cd6805f7f7caaf6310152cac6c43971b /inet/netinet/in.h | |
| parent | 9f2b100d6705b9bbb25206b53e80d7759644e06e (diff) | |
| download | glibc-26e7005728f0eea2972474e6be2905c467661237.tar.gz glibc-26e7005728f0eea2972474e6be2905c467661237.tar.xz glibc-26e7005728f0eea2972474e6be2905c467661237.zip | |
socket: Use may_alias on sockaddr structs (bug 19622)
This supports common coding patterns. The GCC C front end before version 7 rejects the may_alias attribute on a struct definition if it was not present in a previous forward declaration, so this attribute can only be conditionally applied. This implements the spirit of the change in Austin Group issue 1641. Suggested-by: Marek Polacek <polacek@redhat.com> Suggested-by: Jakub Jelinek <jakub@redhat.com> Reviewed-by: Sam James <sam@gentoo.org> Reviewed-by: Carlos O'Donell <carlos@redhat.com> (cherry picked from commit 8d7b6b4cb27d4dec1dd5f7960298c1699275f962)
Diffstat (limited to 'inet/netinet/in.h')
| -rw-r--r-- | inet/netinet/in.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/inet/netinet/in.h b/inet/netinet/in.h index fa57b61079..f684be5beb 100644 --- a/inet/netinet/in.h +++ b/inet/netinet/in.h @@ -244,7 +244,7 @@ extern const struct in6_addr in6addr_loopback; /* ::1 */ /* Structure describing an Internet socket address. */ -struct sockaddr_in +struct __attribute_struct_may_alias__ sockaddr_in { __SOCKADDR_COMMON (sin_); in_port_t sin_port; /* Port number. */ @@ -257,9 +257,11 @@ struct sockaddr_in - sizeof (struct in_addr)]; }; -#if !__USE_KERNEL_IPV6_DEFS +#if __USE_KERNEL_IPV6_DEFS +struct __attribute_struct_may_alias__ sockaddr_in6; +#else /* Ditto, for IPv6. */ -struct sockaddr_in6 +struct __attribute_struct_may_alias__ sockaddr_in6 { __SOCKADDR_COMMON (sin6_); in_port_t sin6_port; /* Transport layer port # */ |