https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90865
--- Comment #2 from sshannin at gmail dot com --- Thanks for such a quick reply. I just wanted to make sure I'm understanding you correctly about what you mean when you say this is expected. Are you indicating that it's desirable that the ubsan instrumentation is visible to gcov and thus shows up as coverage gaps? That seems to be what you're indicating, but seems surprising to me, as it roughly makes the gcov output useless. Certainly I'm not trying to get coverage about code that the compiler inserted as an implementation detail of checking division. Is there way to mark the ubsan-generated code as such so that gcov ignores it instead of marking every division operation as having an uncovered branch?
