compiler-rt/test/msan/sigwaitinfo.cpp

   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
   9 void test_sigwaitinfo() {
  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     siginfo_t info;
  20     int res = sigwaitinfo(&s, &info);
  21     assert(!res);
  22     // The following checks that sig is initialized.
  23     assert(info.si_signo == SIGUSR1);
  24     assert(-1 == __msan_test_shadow(&info, sizeof(info)));
  25   }
  26 }
  27
  28 int main(void) {
  29   test_sigwaitinfo();
  30   return 0;
  31 }