Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/msan/tzset.cc

@@ -0,0 +1,16 @@
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+extern char *tzname[2];
+
+int main(void) {
+  if (!strlen(tzname[0]) || !strlen(tzname[1]))
+    exit(1);
+  tzset();
+  if (!strlen(tzname[0]) || !strlen(tzname[1]))
+    exit(1);
+  return 0;
+}