https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104158
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> --- I was motivated by what the current master provides: $ gcc -fsanitize-coverage=tracecmp a.c gcc: error: unrecognized argument in option ‘-fsanitize-coverage=tracecmp’ gcc: note: valid arguments to ‘-fsanitize-coverage=’ are: trace-cmp trace-pc; did you mean ‘trace-cmp’? So providing a valid argument of the option.