1// RUN: %clangxx_msan -std=c++11 -O0 -g %s -o %t && %run %t
2
3#include <assert.h>
4#include <sanitizer/msan_interface.h>
5#include <signal.h>
6#include <sys/time.h>
7#include <unistd.h>
8
9void test_sigwait() {
10  sigset_t s;
11  sigemptyset(&s);
12  sigaddset(&s, SIGUSR1);
13  sigprocmask(SIG_BLOCK, &s, 0);
14
15  if (pid_t pid = fork()) {
16    kill(pid, SIGUSR1);
17    _exit(0);
18  } else {
19    int sig;
20    int res = sigwait(&s, &sig);
21    assert(!res);
22    // The following checks that sig is initialized.
23    assert(sig == SIGUSR1);
24  }
25}
26
27int main(void) {
28  test_sigwait();
29  return 0;
30}
31