https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65536
--- Comment #39 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- (In reply to Jan Hubicka from comment #36) > Manuel, > I returned back looking for reason lines are going out wrong when we get > short on locators. I do not understand the following code: I just noticed that linemap_add increases the highest_location by one everytime it is called, but there is no overflow check there. Thus, the source_locations may indeed overflow.