[Bug middle-end/63544] [5 Regression] hash_map ends in an infinite loop if overwritten mark_empty uses a different value than 0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63544

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |5.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
How is this a regression?