https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81928
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Matthieu Brucher from comment #8) > What is fundamentally wrong is stated in the standard. It is an undefined > behavior to call a method from a null pointer. So testing this inside a > method is an undefined behavior Nonsense. It can never be null, but it's not undefined to check that. It's 100% defined that this==nullptr is always false.