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a8b9f59e8c
Summary: This patch implements all the feature test macros libc++ currently supports, as specified by the standard or cppreference prior to C++2a. The tests and `<version>` header are generated using a script. The script contains a table of each feature test macro, the headers it should be accessible from, and its values of each dialect of C++. When a new feature test macro is added or needed, the table should be updated and the script re-run. Reviewers: mclow.lists, jfb, serge-sans-paille Reviewed By: mclow.lists Subscribers: arphaman, jfb, ldionne, libcxx-commits Differential Revision: https://reviews.llvm.org/D56750 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351286 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// WARNING: This test was generated by generate_feature_test_macros_tests.py and
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// should not be edited manually.
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// <optional>
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// Test the feature test macros defined by <optional>
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/* Constant Value
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__cpp_lib_optional 201606L [C++17]
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*/
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#include <optional>
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#include "test_macros.h"
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#if TEST_STD_VER < 14
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# ifdef __cpp_lib_optional
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# error "__cpp_lib_optional should not be defined before c++17"
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# endif
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#elif TEST_STD_VER == 14
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# ifdef __cpp_lib_optional
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# error "__cpp_lib_optional should not be defined before c++17"
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# endif
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#elif TEST_STD_VER == 17
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# ifndef __cpp_lib_optional
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# error "__cpp_lib_optional should be defined in c++17"
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# endif
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# if __cpp_lib_optional != 201606L
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# error "__cpp_lib_optional should have the value 201606L in c++17"
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# endif
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#elif TEST_STD_VER > 17
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# ifndef __cpp_lib_optional
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# error "__cpp_lib_optional should be defined in c++2a"
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# endif
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# if __cpp_lib_optional != 201606L
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# error "__cpp_lib_optional should have the value 201606L in c++2a"
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# endif
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#endif // TEST_STD_VER > 17
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int main() {}
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