https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90310
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > What is obvious to you, is not obvious to me. Most of the bug reports I > create look quite similar (both testcases and compiler flags; eg. > -fno-forward-propagate, -fno-dce, -fno-tree-dce and some other flags are > very common in the bugreports). I already filter out about 1/2 of wrong-code > testcases because they look too similiar to me. Good, then I'd strengthen the filtering quite a bit. Having N reports containing the improbable combination of __builtin_bswap32, __builtin_mul_overflow and __builtin_sub_overflow_p in a handful of lines really should raise the red flag.
