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| author | Fangrui Song <i@maskray.me> | 2022-09-04 05:29:32 +0000 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2022-09-04 05:29:32 +0000 |
| commit | 83ea47acd7116bf50274534ba9b3bd3035c01da6 (patch) | |
| tree | 75b0b8dad5db8828532df8236be9e54a19a87a24 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 30ceb783e232ff625cb25b9a264ae60519241f30 (diff) | |
| download | llvm-83ea47acd7116bf50274534ba9b3bd3035c01da6.zip llvm-83ea47acd7116bf50274534ba9b3bd3035c01da6.tar.gz llvm-83ea47acd7116bf50274534ba9b3bd3035c01da6.tar.bz2 | |
[test] Make tests pass regardless of gnu++14/gnu++17 default
GCC from 11 onwards defaults to -std=gnu++17 for C++ source files. We want to do the same
(https://discourse.llvm.org/t/c-objc-switch-to-gnu-17-as-the-default-dialect/64360).
Split RUN lines, adjust `-verify`, or add `__cplusplus < 201703L` or `-Wno-dynamic-exception-spec`,
so that tests will pass regardless of gnu++14/gnu++17 default.
We have a desire to mark a test compatible with multiple language standards.
There are ongoing discussions how to add markers in the long term:
* https://discourse.llvm.org/t/iterating-lit-run-lines/62596
* https://discourse.llvm.org/t/lit-run-a-run-line-multiple-times-with-different-replacements/64932
As a workaround in the short term, add lit substitutions `%std_cxx98-`,
`%std_cxx11-14`, etc. They can be used for tests which work across multiple
language standards. If a range has `n` standards, run lit multiple times, with
`LIT_CLANG_STD_GROUP=0`, `LIT_CLANG_STD_GROUP=1`, etc to cover all `n` standards.
Reviewed By: #clang-language-wg, aaron.ballman
Differential Revision: https://reviews.llvm.org/D131464
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
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