[Bug c++/102804] [9/10/11/12 Regression] template matching fails w/ false ambiguity on ternary expressions with enums class defined with unsigned typedef

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102804

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, sorry the reduced example was missing the first line.

Fixed, and further reduced:

using int32_t = int;
enum: unsigned int32_t { foo };
int f(int);
int f(unsigned);
auto x = f(1 ? foo : 1);