https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85875
programmer at posteo dot de changed:
What |Removed |Added
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CC| |programmer at posteo dot de
--- Comment #1 from programmer at posteo dot de ---
Related: If the return type shall be used for SFINAE then GCC complains before
any instantiation takes place.
#include <type_traits>
template<class T> struct UseOps;
template<class T>
constexpr std::enable_if_t<
UseOps<T>{},
T&
> operator++(T&);
// warning: prefix 'constexpr std::enable_if_t<UseOps<T>{}, T&> operator++(T&)'
// should return 'T&' [-Weffc++]
