1 files changed, 18 insertions, 0 deletions
diff --git a/test/msan/strerror_r-non-gnu.c b/test/msan/strerror_r-non-gnu.c
new file mode 100644
index 000000000000..d55bf42ef11e
--- /dev/null
+++ b/test/msan/strerror_r-non-gnu.c
@@ -0,0 +1,18 @@
+// RUN: %clang_msan -std=c99 -O0 -g %s -o %t && %run %t
+
+// strerror_r under a weird set of circumstances can be redirected to
+// __xpg_strerror_r. Test that MSan handles this correctly.
+
+#define _POSIX_C_SOURCE 200112
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+int main() {
+  char buf[1000];
+  int res = strerror_r(EINVAL, buf, sizeof(buf));
+  assert(!res);
+  volatile int z = strlen(buf);
+  return 0;
+}