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17c199ee92
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.
31 lines
1.3 KiB
C
31 lines
1.3 KiB
C
/* Copyright (C) 1997-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Philip Blundell <pjb27@cam.ac.uk>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <netinet/in.h>
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const struct in6_addr __in6addr_any =
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{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
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libc_hidden_data_def (__in6addr_any)
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weak_alias (__in6addr_any, in6addr_any)
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libc_hidden_data_weak (in6addr_any)
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const struct in6_addr __in6addr_loopback =
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{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
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libc_hidden_data_def (__in6addr_loopback)
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weak_alias (__in6addr_loopback, in6addr_loopback)
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libc_hidden_data_weak (in6addr_loopback)
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