Initial commit

module/jni/libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp

@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string() noexcept(is_nothrow_default_constructible<allocator_type>::value); // constexpr since C++20
+
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+#if TEST_STD_VER >= 11
+// Test the noexcept specification, which is a conforming extension
+LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<std::string>::value, "");
+LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<
+                     std::basic_string<char, std::char_traits<char>, test_allocator<char>>>::value, "");
+LIBCPP_STATIC_ASSERT(!std::is_nothrow_default_constructible<
+                     std::basic_string<char, std::char_traits<char>, limited_allocator<char, 10>>>::value, "");
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string str;
+  assert(str.empty());
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}