[Bug sanitizer/91878] No sanitizer report for past-end access of std∷set

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91878

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
-D_GLIBCXX_DEBUG is the current way to add many checks to libstdc++, and it
detects this.