[Bug fortran/58157] New: ICE on character function with len given by a PURE function

["dcesari69 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58157

            Bug ID: 58157
           Summary: ICE on character function with len given by a PURE
                    function
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcesari69 at gmail dot com

Created attachment 30655
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30655&action=edit
Fortran source for reproducing ICE

Hello, the attached simplified code contains a module with a CHARACTER function
whose results' length is given by another PURE function, which I assume is
correct Fortran 95 and I have used succesfully in other contexts. The module
compiles well, but as soon as the function is encountered in another piece of
code using the module, I get an ICE (+segfault):

====
[davide@localhost ~]$ rm -f *.mod; LANG= gfortran -c icetest.f90 
icetest.f90: In function 'icetest':
icetest.f90:34:0: internal compiler error: Segmentation fault
 tkey = strtofchar_chararr(key) ! ICE here!!!
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
====

It reminds somehow bug 55287:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55827, but that one is fixed in
4.9, while this remains. Same bug with older versions of gfortran.

This is my first bug submission to gcc, so please forgive any procedural
mistake. Thank you for your work, Davide