c++20 std::source_location support request

[hsdk123]

This is a request for a compiler upgrade that supports std::source_location

https://en.cppreference.com/w/cpp/utility/source_location

[sbc100]

This sounds like a libc++ issue? What happens if you try to use this feature with emscripten today? Perhaps the upcoming change to upgrade libc++ to LLVM 19 will fix this: #22994 ?

[hsdk123]

What happens if you try to use this feature with emscripten today?

A compiler error that the header source_location doesn't exist.

[sbc100]

Seems to work for me:

$ cat test.cc 
#include <source_location>

std::source_location x;
$ em++ -std=c++20 test.cc -c

Can you share the full command line you are using? And also the version of emscripten you are using?

[hsdk123]

@sbc100
Thanks for the replies! I've realised this was because I hadn't properly enabled c++20.
Once enabling c++20 though, I run into the error here, hence not useable:
#22305

[sbc100]

OK, sounds like we can close this in as duplicate of #22305?