https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108854
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to davidak from comment #0) > I don't know how to get the "preprocessed file (*.i*) that triggers the > bug", but otherwise you should have all requested information. Unfortunately that's the most important part. You should be able to run "make VERBOSE=1" to see the commands that cmake produces, and then add -save-temps to the command that produces the internal compiler error. That will create the preprocessed source.