https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116289
Bug ID: 116289
Summary: [13.3 regression] Can't apply decltype to comparison
operators created by spaceship operator for local
classes
Product: gcc
Version: 13.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: iamsupermouse at mail dot ru
Target Milestone: ---
This bug only affects 13.3. Works fine in 13.2 and in 14.x.
Having this fixed in 13.x branch would be nice, since it affects `std::less{}`.
The following code doesn't compile: (running `g++ -std=c++20`)
https://gcc.godbolt.org/z/bodKevcvc
#include <compare>
int main()
{
struct A
{
int x = 0;
auto operator<=>(const A &) const = default;
};
decltype(A{} < A{}) y;
}
With following error:
In member function 'constexpr auto main()::A::operator<=>(const main()::A&)
const':
cc1plus: error: taking address of an immediate function 'consteval
std::__cmp_cat::__unspec::__unspec(std::__cmp_cat::__unspec*)'
