[Bug c++/71388] [6/7 regression] wrong code, DSE removes memset in TBB allocate_scheduler (causes run-time crashes)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71388

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Gcc considers the memset as being dead as nothing validly can assume anything
about the memory after the inplacement new.