[Bug tree-optimization/127495] push_back twice to a new std::vector still has two operator new rather than one

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127495

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Note this was at `-O3 -fno-exceptions`.  With exceptions there are stores that
happen due to operator new throwing exceptions.