#include <string.h>
#include <signal.h>
#include <setjmp.h>
#include "test.h"
#define TEST(c, ...) ((c) ? 1 : (t_error(#c" failed: " __VA_ARGS__),0))
int main(void)
{
volatile int x = 0, r;
jmp_buf jb;
sigjmp_buf sjb;
volatile sigset_t oldset;
sigset_t set, set2;
if (!setjmp(jb)) {
x = 1;
longjmp(jb, 1);
}
TEST(x==1, "setjmp/longjmp seems to have been bypassed\n");
x = 0;
r = setjmp(jb);
if (!x) {
x = 1;
longjmp(jb, 0);
}
TEST(r==1, "longjmp(jb, 0) caused setjmp to return %d\n", r);
sigemptyset(&set);
sigaddset(&set, SIGUSR1);
sigprocmask(SIG_UNBLOCK, &set, &set2);
oldset = set2;
/* Improve the chances of catching failure of sigsetjmp to
* properly save the signal mask in the sigjmb_buf. */
memset(&sjb, -1, sizeof sjb);
if (!sigsetjmp(sjb, 1)) {
sigemptyset(&set);
sigaddset(&set, SIGUSR1);
sigprocmask(SIG_BLOCK, &set, 0);
siglongjmp(sjb, 1);
}
set = oldset;
sigprocmask(SIG_SETMASK, &set, &set2);
TEST(sigismember(&set2, SIGUSR1)==0, "siglongjmp failed to restore mask\n");
sigemptyset(&set);
sigaddset(&set, SIGUSR1);
sigprocmask(SIG_UNBLOCK, &set, &set2);
oldset = set2;
if (!sigsetjmp(sjb, 0)) {
sigemptyset(&set);
sigaddset(&set, SIGUSR1);
sigprocmask(SIG_BLOCK, &set, 0);
siglongjmp(sjb, 1);
}
set = oldset;
sigprocmask(SIG_SETMASK, &set, &set2);
TEST(sigismember(&set2, SIGUSR1)==1, "siglongjmp incorrectly restored mask\n");
return t_status;
}