1 files changed, 29 insertions, 0 deletions
diff --git a/compiler-rt/test/msan/Linux/ioctl_sound.cpp b/compiler-rt/test/msan/Linux/ioctl_sound.cpp
new file mode 100644
index 00000000000..fb36c52f2e7
--- /dev/null
+++ b/compiler-rt/test/msan/Linux/ioctl_sound.cpp
@@ -0,0 +1,29 @@
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
+
+#include <assert.h>
+#include <fcntl.h>
+#include <sound/asound.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <sanitizer/msan_interface.h>
+
+int main(int argc, char **argv) {
+  int fd = open("/dev/snd/controlC0", O_RDONLY);
+  if (fd < 0) {
+    printf("Unable to open sound device.");
+    return 0;
+  }
+  const unsigned sz = sizeof(snd_ctl_card_info);
+  void *info = malloc(sz + 1);
+  assert(__msan_test_shadow(info, sz) == 0);
+  assert(ioctl(fd, SNDRV_CTL_IOCTL_CARD_INFO, info) >= 0);
+  assert(__msan_test_shadow(info, sz + 1) == sz);
+  close(fd);
+  free(info);
+  return 0;
+}