[Bug tree-optimization/102087] [12 Regression] ICE on valid code at -O3 on x86_64-linux-gnu: in determine_exit_conditions, at tree-ssa-loop-manip.c:1049 since r12-3136-g3673dcf6d6baeb67

[dcb314 at hotmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102087

--- Comment #9 from David Binderman <dcb314 at hotmail dot com> ---
This second source code generates a similar but different error message:

void dnslabel_vector_dnslabel_to_dnsname_namestack(int bottom) {
  char **name;
  int top;
  while (bottom <= top) {
    char label = *name++;
    memcpy(0, label, label);
    bottom--;
  }
}

internal compiler error: in determine_exit_conditions, at
tree-ssa-loop-manip.c:1045

Some four lines different place in the compiler source code to the original.