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61158ffa9a
Extending linknamespace tests to cover libcrypt showed that crypt brings in references to snprintf, but is in XPG3 and XPG4 which don't have snprintf. This patch fixes it to use __snprintf instead, exporting __snprintf from libc.so at version GLIBC_PRIVATE and adding libc_hidden_proto / libc_hidden_def accordingly. Tested for x86_64 and x86, in conjunction with the testsuite changes to enable linknamespace testing for libdl and libcrypt. Also tested (compilation only) for powerpc to make sure there were no problem interactions with the optional-long-double handling for snprintf. [BZ #20829] * stdio-common/Versions (__snprintf): Add to version GLIBC_PRIVATE. * include/stdio.h (__snprintf): Use libc_hidden_proto. * stdio-common/snprintf.c (__snprintf): Use libc_hidden_def. * crypt/sha256-crypt.c (__sha256_crypt_r): Use __snprintf instead of snprintf. * crypt/sha512-crypt.c (__sha512_crypt_r): Likewise.
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <stdarg.h>
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#include <stdio.h>
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#include <libioP.h>
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#define __vsnprintf(s, l, f, a) _IO_vsnprintf (s, l, f, a)
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/* Write formatted output into S, according to the format
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string FORMAT, writing no more than MAXLEN characters. */
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/* VARARGS3 */
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int
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__snprintf (char *s, size_t maxlen, const char *format, ...)
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{
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va_list arg;
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int done;
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va_start (arg, format);
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done = __vsnprintf (s, maxlen, format, arg);
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va_end (arg);
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return done;
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}
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libc_hidden_def (__snprintf)
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ldbl_weak_alias (__snprintf, snprintf)
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