https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86908
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- No, your program has undefined behaviour. To make it valid you either need to use std::launder, or use the pointer that is returned by the placement new. The compiler is allowed to assume that the dynamic type of &strategy does not change (that's why you need to use std::launder).