1 // RUN: %clangxx_msan -O0 -g %s -o %t && %run %t 2 // RUN: %clangxx_msan -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 } 30
