https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55824
--- Comment #5 from Damian Rouson <damian at sourceryinstitute dot org> ---
I'm guessing the code below is another manifestation of the this bug:
$ cat ice-on-pack-unlimited-polymorphic.f90
contains
subroutine array_to_vector(array)
class(*), allocatable :: vector(:),array(:,:)
allocate(vector,source=pack(array,.true.))
end subroutine
end
$ gfortran ice-on-pack-unlimited-polymorphic.f90
ice-on-pack-unlimited-polymorphic.f90:4:0:
allocate(vector,source=pack(array,.true.))
1
internal compiler error: Segmentation fault: 11
ice-on-pack-unlimited-polymorphic.f90:4:0: internal compiler error: Abort trap:
6
gfortran: internal compiler error: Abort trap: 6 (program f951)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://trac.macports.org/newticket> for instructions.
$ gfortran --version
GNU Fortran (MacPorts gcc6 6-20150621_0) 6.0.0 20150621 (experimental)
...
$ sudo port select --set gcc mp-gcc5
Selecting 'mp-gcc5' for 'gcc' succeeded. 'mp-gcc5' is now active.
$ gfortran ice-on-pack-unlimited-polymorphic.f90
ice-on-pack-unlimited-polymorphic.f90:4:13:
allocate(vector,source=pack(array,.true.))
1
Error: Array specification required in ALLOCATE statement at (1)
