llvm-project/clang/test/CXX/dcl.dcl
Fangrui Song 83ea47acd7 [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
2022-09-04 05:29:32 +00:00
..
basic.namespace [clang] p1099 using enum part 1 2021-06-08 04:40:42 -07:00
dcl.attr Support warn_unused_result on typedefs 2022-06-02 20:57:31 +00:00
dcl.enum
dcl.link
dcl.spec [test] Make tests pass regardless of gnu++14/gnu++17 default 2022-09-04 05:29:32 +00:00
p4-0x.cpp Rewording "static_assert" diagnostics 2022-07-25 07:22:54 -04:00