glibc/sysdeps/x86_64/tst-plt-rewrite2.c

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/* Test PLT rewrite with 32-bit displacement overflow.
Copyright (C) 2024 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
<https://www.gnu.org/licenses/>. */
#include <support/check.h>
extern int (*func_p) (void);
extern void foo (void);
int
func (void)
{
return 0xbadbeef;
}
void
bar (void)
{
TEST_VERIFY (func_p == &func);
TEST_VERIFY (func_p () == 0xbadbeef);
}
static int
do_test (void)
{
func_p = &func;
foo ();
bar ();
return 0;
}
#include <support/test-driver.c>