[Bug tree-optimization/94293] [missed optimization] Useless statements populating local string not removed

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94293

--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
Or just

void f(){
  int*p=new int[1];
  *p=42;
  delete[] p;
}

while it does optimize for

void f(){
  int*p=new int;
  *p=42;
  delete p;
}

because the front-end gives us a clobber before operator delete.