https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70323
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Martin Sebor from comment #6) > I see the problem: It's -Wall that suppresses the error. Yeah, seems with -Wall ctx->quiet is true (probably desirable, for some kind of warning we don't want to warn multiple times), but likely we then cache the results in a hash table. So we either need to cache also the ctx->quiet flag along with the from and to trees and only use cache if either ctx->quiet or if the cached quiet value matches the remembered value, or not cache ctx->quiet lookups (bad), or cache the warnings/errors we need to emit along with the cached values.
