Commit test case for PR 67539.

gcc/testsuite/ChangeLog:

	PR fortran/67539
	* gfortran.dg/elemental_assignment_1.f90: New test.

gcc/testsuite/gfortran.dg/elemental_assignment_1.f90

+! { dg-do run }
+! PR 67539 - this used to give a segfault at runtime.
+! Test case by "mrestelli".
+
+module m
+ implicit none
+
+ type :: t_a
+  real, allocatable :: x
+ end type t_a
+
+ interface assignment(=)
+  module procedure copy_t_a
+ end interface
+
+contains
+ 
+ elemental subroutine copy_t_a(y,x)
+  type(t_a), intent(in)  :: x
+  type(t_a), intent(out) :: y
+   allocate( y%x , source=x%x )
+ end subroutine copy_t_a
+
+ elemental function new_t_a(x) result(res)
+  real, intent(in) :: x
+  type(t_a) :: res
+   allocate( res%x )
+   res%x = x
+ end function new_t_a
+
+end module m
+
+
+program p
+ use m
+ implicit none
+
+ integer :: i
+ type(t_a) :: tmp
+ type(t_a), allocatable :: v(:)
+
+ allocate( v(2) )
+
+ v = new_t_a(1.5)   ! -> segmentation fault
+
+ !tmp = new_t_a(1.5) ! -> OK
+ !v = tmp
+
+ !do i=1,size(v)     ! -> also OK
+ !  v(i) = new_t_a(1.5)
+ !enddo
+
+ do i=1,size(v)
+   write(*,*) " i = ",i
+   write(*,*) allocated(v(i)%x)
+   write(*,*) v(i)%x
+ enddo
+ 
+end program p