[Bug target/83405] [8 Regression] bootstrap fails building a hppa64 compiler using gcc-8 trunk

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83405

--- Comment #1 from Matthias Klose <doko at gcc dot gnu.org> ---
still seen with r255604, and the proposed patch from
https://gcc.gnu.org/ml/gcc-patches/2017-12/msg00811.html