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| author | Eric Blake <eblake@redhat.com> | 2011-04-28 16:46:16 -0600 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2011-04-28 17:35:16 -0600 |
| commit | 74175b903b1716c1677658e45fa69ef1fbc99015 (patch) | |
| tree | ea876262a1dc6e99eacad03069070d6f7a064b93 /m4/netdb_h.m4 | |
| parent | 7aa5e8dd3a8431c2354197961b3f2cd76864091f (diff) | |
| download | gnulib-74175b903b1716c1677658e45fa69ef1fbc99015.tar.gz | |
getaddrinfo: fix gai_strerror signature
Several platforms declare gai_strerror to return char* rather than
const char*. Worse, on mingw, if UNICODE is defined, it is defined
to return WCHAR*, which means the result is in unicode but an
application expecting bytes for characters will only see a one-byte
answer.
* m4/getaddrinfo.m4 (gl_GETADDRINFO): Detect broken signatures,
and work around mingw with UNICODE defined.
(gl_PREREQ_GETADDRINFO): Drop redundant decl check.
* m4/netdb_h.m4 (gl_NETDB_H_DEFAULTS): Add witness.
* modules/netdb (Makefile.am): Substitute it.
* lib/netdb.in.h (gai_strerror): Declare replacement.
* lib/gai_strerror.c (rpl_gai_strerror): Fix signature.
* doc/posix-functions/gai_strerror.texi (gai_strerror): Document
the fix.
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'm4/netdb_h.m4')
| -rw-r--r-- | m4/netdb_h.m4 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/m4/netdb_h.m4 b/m4/netdb_h.m4 index 9a01cd6a76..259c7a3181 100644 --- a/m4/netdb_h.m4 +++ b/m4/netdb_h.m4 @@ -37,4 +37,5 @@ AC_DEFUN([gl_NETDB_H_DEFAULTS], HAVE_DECL_GAI_STRERROR=1; AC_SUBST([HAVE_DECL_GAI_STRERROR]) HAVE_DECL_GETADDRINFO=1; AC_SUBST([HAVE_DECL_GETADDRINFO]) HAVE_DECL_GETNAMEINFO=1; AC_SUBST([HAVE_DECL_GETNAMEINFO]) + REPLACE_GAI_STRERROR=0; AC_SUBST([REPLACE_GAI_STRERROR]) ]) |