1 files changed, 20 insertions, 0 deletions
diff --git a/test/msan/ioctl.cc b/test/msan/ioctl.cc
new file mode 100644
index 0000000000000..caa5c274f5eba
--- /dev/null
+++ b/test/msan/ioctl.cc
@@ -0,0 +1,20 @@
+// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -m64 -O3 -g %s -o %t && %run %t
+
+#include <assert.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+  int fd = socket(AF_INET, SOCK_DGRAM, 0);
+
+  unsigned int z;
+  int res = ioctl(fd, FIOGETOWN, &z);
+  assert(res == 0);
+  close(fd);
+  if (z)
+    exit(0);
+  return 0;
+}