test/msan/ioctl_sound.cc

   1 // RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
   2 // RUN: %clangxx_msan -m64 -O3 -g %s -o %t && %run %t
   3
   4 #include <assert.h>
   5 #include <fcntl.h>
   6 #include <sound/asound.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <sys/ioctl.h>
  10 #include <sys/socket.h>
  11 #include <unistd.h>
  12
  13 #include <sanitizer/msan_interface.h>
  14
  15 int main(int argc, char **argv) {
  16   int fd = open("/dev/snd/controlC0", O_RDONLY);
  17   if (fd < 0) {
  18     printf("Unable to open sound device.");
  19     return 0;
  20   }
  21   const unsigned sz = sizeof(snd_ctl_card_info);
  22   void *info = malloc(sz + 1);
  23   assert(__msan_test_shadow(info, sz) == 0);
  24   assert(ioctl(fd, SNDRV_CTL_IOCTL_CARD_INFO, info) >= 0);
  25   assert(__msan_test_shadow(info, sz + 1) == sz);
  26   close(fd);
  27   free(info);
  28   return 0;
  29 }