https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90295
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Mathias Stearn from comment #2)
> Example showing significant codegen at -O3 which should all optimize away:
>
> #include <exception>
> bool test() {
> std::exception_ptr p1;
> std::exception_ptr p2 (p1);
> p1 = p2;
> swap(p1, p2);
> return p1 == nullptr && nullptr == p2 && p1 == p2;
> }
This optimizes to nothing now.
Fixed for GCC 11, and not plausible to backport.
