glibc/malloc/mcheck-init.c
Florian Weimer 7ece6cd509 malloc: Use compat_symbol_reference in libmcheck [BZ #22050]
Since glibc 2.24, __malloc_initialize_hook is a compat symbol.  As a
result, the link editor does not export a definition of
__malloc_initialize_hook from the main program, so that it no longer
interposes the variable definition in libc.so.  Specifying the symbol
version restores the exported symbol.
2017-10-16 20:52:34 +02:00

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1.2 KiB
C

/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* The object of this file should be installed as libmcheck.a,
so one can do -lmcheck to turn on mcheck. */
#include <malloc.h>
#include <mcheck.h>
#include <shlib-compat.h>
static void
turn_on_mcheck (void)
{
mcheck (NULL);
}
void (*__malloc_initialize_hook) (void) = turn_on_mcheck;
compat_symbol_reference (libc, __malloc_initialize_hook,
__malloc_initialize_hook, GLIBC_2_0);