https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92296
--- Comment #6 from fdlbxtqi <euloanty at live dot com> --- (In reply to fdlbxtqi from comment #4) > (In reply to Andrew Pinski from comment #2) > > Most likely the reduced testcase is just: > > #pragma push_macro("__has_builtin") > > > > --- CUT --- > > > I did finish compilation with the same script 3 days ago. Now It fails > > > > That is because the support for __has_builtin was just added within the last > > 3 days :). > > Then how can I build a new version of GCC on MinGW? :( > > > Every day I have to rebuild the entire compiler since either some features > fail to work or the compiler fails to compile. Sad :( > > > I have to use the new compiler for compiling my C++20 concepts based IO > library. > > > https://bitbucket.org/ejsvifq_mabmip/fast_io/src/default/ Compile gcc on linux for twice + MinGW for twice per day. :(