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fa3eb7d5e7
Otherwise on at least x86_64 and s390x there is an unwanted PLT entry in libc.so when configured with --enable-fortify-source=3 and build with -Os. This is observed in elf/check-localplt Extra PLT reference: libc.so: __strcpy_chk The call to PLT entry is in inet/ruserpass.c. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* Copyright (C) 1991-2024 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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<https://www.gnu.org/licenses/>. */
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#include <stddef.h>
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#include <string.h>
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#include <memcopy.h>
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#undef strcpy
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/* Copy SRC to DEST with checking of destination buffer overflow. */
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char *
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__strcpy_chk (char *dest, const char *src, size_t destlen)
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{
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size_t len = strlen (src);
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if (len >= destlen)
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__chk_fail ();
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return memcpy (dest, src, len + 1);
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}
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libc_hidden_builtin_def (__strcpy_chk)
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