__cpp_nontype_template_args is not reported as 201911L even when compiling in c++ >= 20

[Julien-Blanc-tgcm]

The feature is correctly supported by clang, but is still reported as 201411L, whatever the current C++ version is used.

It should be correctly set to 201911L when compiling in C++20 and above..

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: None (Julien-Blanc-tgcm)

The feature is correctly supported by clang, but is still reported as `201411L`, whatever the current C++ version is used.

It should be correctly set to 201911L when compiling in C++20 and above..

[zwuis]

The feature is correctly supported by clang

P1907R1 is not fully supported.

[AaronBallman]

Correct, this is not a bug but is by design. Closing the issue because we'll update the feature test macro once we're fully conforming to the feature.