Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

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

@@ -0,0 +1,19 @@
+// RUN: %clangxx_msan -std=c++11 -O0 -g %s -o %t && %run %t
+// REQUIRES: x86_64-linux
+
+#include <assert.h>
+#include <locale.h>
+#include <sanitizer/msan_interface.h>
+#include <stdlib.h>
+#include <string.h>
+
+extern "C" decltype(strxfrm_l) __strxfrm_l;
+
+int main(void) {
+  char q[10];
+  locale_t loc = newlocale(LC_ALL_MASK, "", (locale_t)0);
+  size_t n = __strxfrm_l(q, "qwerty", sizeof(q), loc);
+  assert(n < sizeof(q));
+  __msan_check_mem_is_initialized(q, n + 1);
+  return 0;
+}