[Bug libstdc++/126120] is_constructible_v with shared_ptr from an invalid deleter

[asdfsddf1 at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126120

--- Comment #2 from winapiadmin <asdfsddf1 at outlook dot com> ---
Created attachment 64997
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64997&action=edit
A possible patch for the library (maybe, verify the diffs)