Joseph Myers 17c199ee92 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.		2015-06-17 20:08:22 +00:00
..
data	Fix netdb.h addrinfo namespace (bug 18529).	2015-06-12 22:35:07 +00:00
check-header-lists.sh	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
conformtest.pl	Add tests for namespace for static linking.	2014-11-12 22:45:25 +00:00
GlibcConform.pm	conformtest: use proper _POSIX_C_SOURCE value for POSIX.	2015-05-20 23:14:53 +00:00
linknamespace.pl	linknamespace: whitelist re_syntax_options.	2015-05-21 16:24:24 +00:00
list-header-symbols.pl	Fix linknamespace expectations for in6addr_any, in6addr_loopback.	2015-06-14 14:32:07 +00:00
Makefile	Fix gethostbyaddr in6addr_any, in6addr_loopback namespace (bug 18532).	2015-06-17 20:08:22 +00:00