[Bug libstdc++/57465] Failed postcondition for std::function constructed with null function pointer

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57465
Bug 57465 depends on bug 57466, which changed state.

Bug 57466 Summary: [DR 1584] Argument deduction fails for 'const T*' when T is 
function type
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57466

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED