Bernie Innocenti a6f4194489 Fix std::span autodetection (#7805) ...

The current detection method fails on GCC 12.2 with -std=c++20 because
the __cpp_lib_span macro is undefined.

As per https://en.cppreference.com/w/cpp/utility/feature_test ,
__cpp_lib_span requires including either <version> or <span>.

Since both these headers were added in C++20, checking for C++20 is
sufficient (and simpler than using the library feature-test macro).

Signed-off-by: Bernie Innocenti <bernie@codewiz.org>
Co-authored-by: Derek Bailey <derekbailey@google.com>

2023-01-30 21:59:17 -08:00

..

flatbuffers

Fix std::span autodetection (#7805)

2023-01-30 21:59:17 -08:00