mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
c5bb8e2399
We have multiple tests that copy & paste the same logic for disabling the fortification output. Let's unify this in the test-skeleton instead. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
79 lines
1.2 KiB
C
79 lines
1.2 KiB
C
/* Basic test to make sure doing a longjmp to a jmpbuf with an invalid sp
|
|
is caught by the fortification code. */
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
|
|
static int do_test(void);
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|
|
|
|
|
|
static jmp_buf b;
|
|
|
|
|
|
static void
|
|
__attribute__ ((noinline))
|
|
f (void)
|
|
{
|
|
char buf[1000];
|
|
asm volatile ("" : "=m" (buf));
|
|
|
|
if (setjmp (b) != 0)
|
|
{
|
|
puts ("second longjmp succeeded");
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
|
|
static bool expected_to_fail;
|
|
|
|
|
|
static void
|
|
handler (int sig)
|
|
{
|
|
if (expected_to_fail)
|
|
_exit (0);
|
|
else
|
|
{
|
|
static const char msg[] = "unexpected longjmp failure\n";
|
|
TEMP_FAILURE_RETRY (write (STDOUT_FILENO, msg, sizeof (msg) - 1));
|
|
_exit (1);
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
set_fortify_handler (handler);
|
|
|
|
|
|
expected_to_fail = false;
|
|
|
|
if (setjmp (b) == 0)
|
|
{
|
|
longjmp (b, 1);
|
|
/* NOTREACHED */
|
|
printf ("first longjmp returned\n");
|
|
return 1;
|
|
}
|
|
|
|
|
|
expected_to_fail = true;
|
|
|
|
f ();
|
|
longjmp (b, 1);
|
|
|
|
puts ("second longjmp returned");
|
|
return 1;
|
|
}
|