[Bug libstdc++/87787] [9 Regression][UBSAN] runtime error: null pointer passed as argument 2, which is declared to never be null

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87787

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Jonathan: Can the bug be marked as resolved?