[Bug libstdc++/59391] std::sort will go out of std::vector bounds and crash

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59391

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WORKSFORME                  |INVALID

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is not a valid strict weak ordering:

bool compare_val(int* a, int* b) {
   if (*a <= *b) return true;
   return false;
}

See https://www.sgi.com/tech/stl/StrictWeakOrdering.html

It fails the irreflexive and antisymmetric requirements.