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glibc/nptl/tst-cleanup2.c
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/* Copyright (C) 2003-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Bao Duong <bduong@progress.com>, 2003. | |
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/>. */ | |
#include <setjmp.h> | |
#include <signal.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <sys/types.h> | |
static sigjmp_buf jmpbuf; | |
static void | |
sig_handler (int signo) | |
{ | |
siglongjmp (jmpbuf, 1); | |
} | |
static int | |
do_test (void) | |
{ | |
char *p = NULL; | |
/* gcc can overwrite the success written value by scheduling instructions | |
around sprintf. It is allowed to do this since according to C99 the first | |
argument of sprintf is a character array and NULL is not a valid character | |
array. Mark the return value as volatile so that it gets reloaded on | |
return. */ | |
volatile int ret = 0; | |
if (signal (SIGSEGV, &sig_handler) == SIG_ERR) | |
{ | |
perror ("installing SIGSEGV handler"); | |
return 1; | |
} | |
puts ("Attempting to sprintf to null ptr"); | |
if (setjmp (jmpbuf)) | |
{ | |
puts ("Exiting main..."); | |
return ret; | |
} | |
sprintf (p, "This should segv\n"); | |
return 1; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |