[Bug libstdc++/103853] std::forward_list::merge should check if __list != this

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103853

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |9.5
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 9.5, 10.4, 11.4 and 12.1