glibc/malloc/tst-mallocfork.c
Ulrich Drepper 7dac9f3d90 [BZ #838]
* malloc/arena.c (ptmalloc_lock_all): If global lock already taken
	by the same thread, just bump the counter.
	(ptmalloc_unlock_all): If counter for recursive locks hasn't reached
	zero, don't do anything else.
	* malloc/Makefile (tests): Add tst-mallocfork.
	* malloc/tst-mallocfork.c: New file.
2005-09-27 05:45:26 +00:00

53 lines
990 B
C

/* Derived from the test case in
http://sourceware.org/bugzilla/show_bug.cgi?id=838. */
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
static void
sig_handler (int signum)
{
pid_t child = fork ();
if (child == 0)
exit (0);
TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
}
static int
do_test (void)
{
pid_t parent = getpid ();
struct sigaction action;
sigemptyset (&action.sa_mask);
action.sa_handler = sig_handler;
malloc (sizeof (int));
if (sigaction (SIGALRM, &action, NULL) != 0)
{
puts ("sigaction failed");
return 1;
}
/* Create a child that sends the signal to be caught. */
pid_t child = fork ();
if (child == 0)
{
if (kill (parent, SIGALRM) == -1)
perror ("kill");
exit (0);
}
TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"