[Bug c/78736] enum warnings in GCC (request for -Wenum-conversion to be added)

[jg at jguk dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78736

--- Comment #19 from Jonny Grant <jg at jguk dot org> ---
(In reply to Eric Gallager from comment #18)
> (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.

ok, I added 
Bug 92159 to add -Wenum-conversion for C++

Bug 92158 my enum test case for C and C++