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| author | Joseph Myers <joseph@codesourcery.com> | 2015-06-17 20:08:22 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-06-17 20:08:22 +0000 |
| commit | 17c199ee92e4ca8a34a47c42924608a25a444eb2 (patch) | |
| tree | eb24c1f1561542b1540162636d5c55cb48462cbb /include/netinet/in.h | |
| parent | c10b9b13f7471b08273effc8cd7e51b119df9348 (diff) | |
| download | glibc-17c199ee92e4ca8a34a47c42924608a25a444eb2.zip glibc-17c199ee92e4ca8a34a47c42924608a25a444eb2.tar.gz glibc-17c199ee92e4ca8a34a47c42924608a25a444eb2.tar.bz2 | |
Fix gethostbyaddr in6addr_any, in6addr_loopback namespace (bug 18532).
gethostbyaddr brings in references to in6addr_any and thereby
in6addr_loopback, which aren't in all the standards containing
gethostbyaddr (gethostbyaddr is in XPG4 and UNIX98, in6addr_any and
in6addr_loopback are new in POSIX.1:2001). This patch fixes this by
making those symbols into weak aliases (safe in this case, unlike for
most data symbols, because these data symbols are const).
Tested for x86_64 and x86 (testsuite, and comparison of disassembly of
installed stripped shared libraries). Disassembly is unchanged for
x86_64; for x86, I see some changes of stack offsets, but no other
code generation changes or code size differences.
[BZ #18532]
* inet/in6_addr.c (in6addr_any): Rename to __in6addr_any and
define as weak alias of __in6addr_any. Use libc_hidden_data_weak.
(in6addr_loopback): Rename to __in6addr_loopback and define as
weak alias of __in6addr_loopback. Use libc_hidden_data_weak.
* include/netinet/in.h (__in6addr_loopback): Declare. Use
libc_hidden_proto.
(__in6addr_any): Likewise.
* inet/gethstbyad_r.c (PREPROCESS): Use __in6addr_any instead of
in6addr_any.
* conform/Makefile (test-xfail-XPG4/netdb.h/linknamespace): Remove
variable.
(test-xfail-UNIX98/netdb.h/linknamespace): Likewise.
Diffstat (limited to 'include/netinet/in.h')
| -rw-r--r-- | include/netinet/in.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/netinet/in.h b/include/netinet/in.h index 6fb5c86..5e37746 100644 --- a/include/netinet/in.h +++ b/include/netinet/in.h @@ -5,7 +5,11 @@ #ifndef _ISOMAC libc_hidden_proto (bindresvport) libc_hidden_proto (in6addr_loopback) +extern __typeof (in6addr_loopback) __in6addr_loopback; +libc_hidden_proto (__in6addr_loopback) libc_hidden_proto (in6addr_any) +extern __typeof (in6addr_any) __in6addr_any; +libc_hidden_proto (__in6addr_any) #endif #endif |