https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92693
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Matthijs Kooijman from comment #3)
> Fair point, though I think that it is hard to define a proper overload set
> here. In my case, I'm defining functions to print various sizes of integers.
> Because the body of the function needs to know how big the type is, I'm
> using the
> uintxx_t types to define them. I could of course define the function for
> (unsigned) char, short, int, long, long long, but then I can't make any
> assumptions about the exact size of each (I could use sizeof and make a
> generic implementation, but I wanted to keep things simple and use a
> different implementation for each size).
void func(uint8_t);
void func(uint16_t);
void func(uint32_t);
void func(uint64_t);
template<typename T>
std::enable_if_t<std::is_unsigned<T>::value> func(T t)
{
if (sizeof(T) == sizeof(uint8_t))
func((uint8_t)t);
else if (sizeof(T) == sizeof(uint16_t))
func((uint16_t)t);
else if (sizeof(T) == sizeof(uint32_t))
func((uint32_t)t);
else if (sizeof(T) == sizeof(uint64_t))
func((uint64_t)t);
}
