[Bug tree-optimization/66875] entire for loop got eliminated at cddce2 tree-opt stage

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66875

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'm just guessing that

  for(i = 1; i <= (188 + 1); i++) {
    if (prot_short_str[i]) {

is accessing prot_short_str out of bounds.