Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

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

@@ -0,0 +1,26 @@
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <time.h>
+
+#include <sanitizer/msan_interface.h>
+
+int main(void) {
+  struct tm tm;
+  tm.tm_year = 2014;
+  tm.tm_mon = 3;
+  tm.tm_mday = 28;
+#ifndef UNINIT
+  tm.tm_hour = 13;
+#endif
+  tm.tm_min = 4;
+  tm.tm_sec = 42;
+  tm.tm_isdst = -1;
+  time_t t = mktime(&tm);
+  // CHECK: MemorySanitizer: use-of-uninitialized-value
+  // CHECK: in main{{.*}}mktime.cc:[[@LINE-2]]
+  assert(t != -1);
+  assert(__msan_test_shadow(&tm, sizeof(tm)) == -1);
+  return 0;
+}