https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100135
Nicolas Werner <nicolas.werner at hotmail dot de> changed:
What |Removed |Added
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CC| |nicolas.werner at hotmail dot
de
--- Comment #1 from Nicolas Werner <nicolas.werner at hotmail dot de> ---
A more minimal example of the issue here, I think:
export module internalname;
constexpr int radix_16 = 16;
export {
int foo(int in = radix_16) {
return in;
}
}
I *think* this is legal module code and MSVC as well as clang do accept it.
However it is a weird edge case. This also isn't exclusive to default function
arguments, you can trigger the same issue with templates:
export module internalname;
constexpr int radix_16 = 16;
template <class T, auto Param>
inline auto do_from_chars() -> T {
if (Param > 4) {
return 5;
}
else {
return 4;
}
}
export {
template <class T> struct parse_number {
auto operator()() -> T {
return do_from_chars<T, radix_16>();
}
};
}
Specifically gcc seems to be overly strict here in how it handles internal
linkage entities, that are required on the call site for default parameters or
template instantiations.
