| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| |
| // Call front() on empty container. |
| |
| // UNSUPPORTED: libcxx-no-debug-mode |
| |
| // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEBUG=1 |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "debug_macros.h" |
| |
| int main(int, char**) { |
| typedef std::string S; |
| S s(1, '\0'); |
| assert(s.front() == 0); |
| s.clear(); |
| TEST_LIBCPP_ASSERT_FAILURE(s.front(), "string::front(): string is empty"); |
| |
| return 0; |
| } |