[Bug fortran/56378] gfortran internal compiler error

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56378

--- Comment #5 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2013-02-18 18:48:28 UTC ---
simplified testcase:


module t
 use, intrinsic :: iso_c_binding
 interface fvec2vec
   module procedure int_fvec2vec
 end interface
contains
 function int_fvec2vec (f_vec, n) result (c_vec)
 integer f_vec(:)
 integer(c_int), target :: c_vec(n)
 end function int_fvec2vec
 subroutine lat_to_c (Fp, C) bind(c)
 integer, allocatable :: ic(:)
 call lat_to_c2 (c_loc(fvec2vec(ic, n1_ic)))
 end subroutine lat_to_c
end module

looks like related to having a c_loc on an interfacedd function result.