[Bug preprocessor/64604] New: [5 Regression] r212194 causes zsh miscompilation

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64604

            Bug ID: 64604
           Summary: [5 Regression] r212194 causes zsh miscompilation
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org

Starting with r212194 zsh gets miscompiled on my machine (x86_64).
Symptoms include startup crashes and bizarre tab expansion failures like:

markus@x4 ~ % /va<tab>
_main_complete:trap:131: undefined signal: INT

I haven't looked deeper yet. Will hopefully be able to do so tomorrow.