https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116789
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- We need the preprocessed source as requested by https://gcc.gnu.org/bugs/ If you add -freport-bug to the command line of gcc while compiling, it will save the preprocessed source to a file and report the file name for the file that is causing the internal compiler error. Otherwise you can add -save-temps and attach the resulting .ii file. If the file becomes too big you can compress it.