https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89936
--- Comment #2 from Roland Illig <roland.illig at gmx dot de> --- Just as a reference, I wrote a little linter just for fun 2 years ago. Since it was February 2017, it was most likely targeted at GCC 7. https://github.com/rillig/translation-team-de/blob/master/proofread.lua I'm sure there is a more robust library out there for the same job, only better. That library could be used to implement the linter I talked about.