[Bug c++/87847] spec_hasher::hash does not match with spec_hasher::equal

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87847

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
May I please ping this? I would like to finish the hast table sanitization
patch in this stage1.