[Bug libstdc++/91170] [9/10 Regression] Crash in pdns resolver

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91170

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
In the end the issue may have been caused by building with LTO.