https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100152
--- Comment #20 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Iain Sandoe from comment #17) > (In reply to lucier from comment #16) > > I have figured out how to build and then run the app in lldb to reliably > > reproduce the error. > I will try later on 10.15, ... which does reproduce the fail as you describe. - now it's interesting that different compilers fail in different places, and different OS versions fail with different symptoms. have to try an find a pattern to this.