[Bug fortran/80291] New: internal compiler error: in gfc_conv_expr_descriptor, at fortran/trans-array.c:6662

["snowfed at mail dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80291

            Bug ID: 80291
           Summary: internal compiler error: in gfc_conv_expr_descriptor,
                    at fortran/trans-array.c:6662
           Product: gcc
           Version: 5.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: snowfed at mail dot ru
  Target Milestone: ---

Created attachment 41108
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41108&action=edit
This small program reproduces the compiler bug.

Dear gfortran developers!


I stumbled upon this compiler bug which is quite easy to reproduce (source code
attached). Don't know if it's been fixed in future releases of the compiler
although I doubt it because it wouldn't be a common problem to occur.


--------------------------------
Example (Ubuntu 16.04)
--------------------------------
$ gfortran bug_gfortran.f90 -ggdb
bug_gfortran.f90:67:0:

         vertices = cell%get_vertex(pack([1,2,3,4], cell%get_mask([1,2,3,4])))
 1
internal compiler error: in gfc_conv_expr_descriptor, at
fortran/trans-array.c:6662
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.


Fedor