https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84161
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- It should not. Use /* ... */ or // comments instead if you don't want expansion in them. The preprocessor doesn't know anything about Fortran parsing and changing this would e.g. break OpenMP or OpenACC, where we do want normal preprocessing in !$omp and !$acc comments.