https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78736
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #18 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Jonny Grant from comment #17) > Hello Joseph > > This was the test case I created. There isn't any warning output when 'a_t' > is converted to 'int'. Or even if it was converted to an 'unsigned int' > > https://gcc.gnu.org/ml/gcc-help/2019-07/msg00014.html > > > //-O2 -Wall -Wextra -Wconversion -Werror > > #include <cstddef> > typedef enum > { > a = -1 > } a_t; > > a_t f() > { > return a; > } > > int main() > { > int b = f(); > return b; > } While it's true that g++ prints no warnings for that testcase, I think that's material for a separate bug. The original bug here was just to add -Wenum-conversion for the C front-end, which has now been done, so I'm closing this. Feel free to open new bugs for any missed cases.