| Issue |
129730
|
| Summary |
Value of `__cpp_constexpr` is incorrect for `-std=c++20`
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
elbeno
|
When compiling with `-std=c++20`, clang defines `__cpp_constexpr` to be `201907L`, and it should be `202002L`.
https://godbolt.org/z/G6v7EvEfe
Clearly clang has support for https://wg21.link/P1330.
So the value of `__cpp_constexpr` in C++20 should be 202002L as given by https://wg21.link/p2493 and https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations#__cpp_constexpr
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