https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94702
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #1) > Another bug is that we don't support the __cpp_lib_execution macro, which > should have been updated to indicate this policy is supported. That has been fixed in g:aac39307e8f589dba231083a3e9aa3d0ff302837 so that __cpp_lib_execution is always defined to 201902L even in C++17, to reflect that this policy is always defined. That way the feature test macro accurately describes our implementation.
