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c73c96a4a1
Since i686 provides the fortified wrappers for memcpy, mempcpy,
memmove, and memset on the same string implementation, the static
build tries to optimized it by not tying the fortified wrappers
to string routine (to avoid pulling the fortify function if
they are not required).
Checked on i686-linux-gnu building with different option:
default and --disable-multi-arch plus default, --disable-default-pie,
--enable-fortify-source={2,3}, and --enable-fortify-source={2,3}
with --disable-default-pie.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/* Multiple versions of __mempcpy_chk
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2017-2023 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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/* Define multiple versions only for the definition in libc.so. */
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#if IS_IN (libc) && defined SHARED
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# define __mempcpy_chk __redirect_mempcpy_chk
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# include <string.h>
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# undef __mempcpy_chk
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# define SYMBOL_NAME mempcpy_chk
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# include "ifunc-memmove.h"
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libc_ifunc_redirected (__redirect_mempcpy_chk, __mempcpy_chk,
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IFUNC_SELECTOR ());
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# ifdef SHARED
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__hidden_ver1 (__mempcpy_chk, __GI___mempcpy_chk, __redirect_mempcpy_chk)
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__attribute__ ((visibility ("hidden"))) __attribute_copy__ (__mempcpy_chk);
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# endif
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#else
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# include <debug/mempcpy_chk.c>
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#endif
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