On 15/08/19 17:04 +0100, Jonathan Wakely wrote:
In C++17 a function can return a prvalue of a type that cannot be moved
or copied. The current implementation of std::is_invocable_r uses
std::is_convertible to test the conversion to R required by INVOKE.
That fails for non-copyable prvalues, becau
In C++17 a function can return a prvalue of a type that cannot be moved
or copied. The current implementation of std::is_invocable_r uses
std::is_convertible to test the conversion to R required by INVOKE.
That fails for non-copyable prvalues, because std::is_convertible is
defined in terms of std
