[Bug c++/84604] False positive "may be used uninitialized in this function" due to variable initialization eliminated as dead code

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84604

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Craig Schroeder from comment #0)
>             this->~S();
>             a=b+2;

What do you expect this to do? You destruct the object, then access its member
b...