New C++ features in GCC 10 - Red Hat Developer
developers.redhat.com › new-c-features-in-gcc-10Sep 24, 2020 · The default dialect in GCC 10 is -std=gnu++14; to enable C++20 features, use the -std=c++20 or -std=gnu++20 command-line option. (Note that the latter option allows GNU extensions.) C++ concepts. While previous versions of GCC (GCC 6 was the first) had initial implementations of C++ concepts, GCC 10 updated concepts to conform to the C++20 specification. This update also improved compile times.