On 2022-05-18 00:56, Marek Polacek via Gcc-patches wrote:
> +In C, an enumerated type is compatible with @code{char}, a signed
> +integer type, or an unsigned integer type. However, since the choice
> +of the underlying type of an enumerated type is implementation-defined,
> +such mismatches may
In C, an enumerated type is compatible with char, a signed integer type,
or an unsigned integer type (6.7.2.2/5). Therefore this code compiles:
enum E { l = -1, z = 0, g = 1 };
int foo(void);
enum E foo(void) { return z; }
if the underlying type of 'enum E' is 'int' (if not, we emit an err
