[Bug tree-optimization/78076] [7 Regression] Conditional jump or move depends on uninitialised value @ tree-vect-loop.c:2307

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78076

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
int a, b;
void fn1() {
  for (; a < 0; ++a) {
    b = 0;
    for (; b < a; b++)
      ;
  }
}