[Bug fortran/85786] New: Segfault in associated intrinsic

["angus at agibson dot me" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85786

            Bug ID: 85786
           Summary: Segfault in associated intrinsic
           Product: gcc
           Version: 8.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: angus at agibson dot me
  Target Milestone: ---

Created attachment 44132
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44132&action=edit
Segfaulting example

I've run into a bit of a heisenbug regarding the associated intrinsic (example
attached).  On my machine, it'll reliably hit a segmentation fault inside the
gfortran implementation of the intrinsic.  I've pared it down a lot from the
original codebase in which it happened, but it's still a bit complex. 
Curiously, it seems to require a print statement in query_ptr to trigger (this
actually isn't in the original codebase, but there are a few external calls
there that I didn't replicate).