https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120969
--- Comment #10 from Frank Heckenbach <f.heckenb...@fh-soft.de> --- (In reply to Andrew Pinski from comment #7) > From > https://gcc.gnu.org/onlinedocs/gcc-15.1.0/gcc/Standards.html#C_002b_002b- > Language : > Another revised ISO C++ standard was published in 2020 as ISO/IEC > 14882:2020, and is referred to as C++20; before its publication it was > sometimes referred to as C++2a. GCC supports most of the changes in the new > specification. For further details see > https://gcc.gnu.org/projects/cxx-status.html#cxx20. To select this standard > in GCC, use the option -std=c++20. > > > > Note the use of "most" there. So "most" means "some of the features of the standard plus some non-standard features which will then suddenly be withdrawn"?
