[Bug tree-optimization/71702] dr_group_sort_cmp violates transitivity required for qsort

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71702

--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Created attachment 38794
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38794&action=edit
qsortchk.c

quick'n'dirty LD_PRELOAD transitivity validator for qsort comparator