diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 54700c62638..c1e27634306 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2013-01-12  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/55072
+	* trans-array.c (gfc_conv_array_parameter): No packing was done for
+	full arrays of derived type.
+
 2013-01-08  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/55868
diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c
index d292eac03e1..088a29973f0 100644
--- a/gcc/fortran/trans-array.c
+++ b/gcc/fortran/trans-array.c
@@ -7002,20 +7002,14 @@ gfc_conv_array_parameter (gfc_se * se, gfc_expr * expr, bool g77,
     this_array_result = false;
 
   /* Passing address of the array if it is not pointer or assumed-shape.  */
-  if (full_array_var && g77 && !this_array_result)
+  if (full_array_var && g77 && !this_array_result
+      && sym->ts.type != BT_DERIVED && sym->ts.type != BT_CLASS)
     {
       tmp = gfc_get_symbol_decl (sym);
 
       if (sym->ts.type == BT_CHARACTER)
 	se->string_length = sym->ts.u.cl->backend_decl;
 
-      if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS)
-	{
-	  gfc_conv_expr_descriptor (se, expr);
-	  se->expr = gfc_conv_array_data (se->expr);
-	  return;
-	}
-
       if (!sym->attr.pointer
 	  && sym->as
 	  && sym->as->type != AS_ASSUMED_SHAPE
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 868f5aa555c..f847f1b7a3e 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2013-01-12  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/55072
+	* gfortran.dg/assumed_type_2.f90: Fix test case.
+	* gfortran.dg/internal_pack_13.f90: New test.
+	* gfortran.dg/internal_pack_14.f90: New test.
+
 2013-01-08  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/55868
diff --git a/gcc/testsuite/gfortran.dg/assumed_type_2.f90 b/gcc/testsuite/gfortran.dg/assumed_type_2.f90
index ab1049d216e..28d38a16982 100644
--- a/gcc/testsuite/gfortran.dg/assumed_type_2.f90
+++ b/gcc/testsuite/gfortran.dg/assumed_type_2.f90
@@ -157,7 +157,7 @@ end
 ! { dg-final { scan-tree-dump-times "sub_scalar .\\(struct t1 .\\) array_class_t1_alloc._data.data" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_scalar .\\(struct t1 .\\) array_class_t1_ptr._data.dat" 1 "original" } }a
 
-! { dg-final { scan-tree-dump-times "sub_array_assumed \\(D" 2 "original" } }
+! { dg-final { scan-tree-dump-times "sub_array_assumed \\(D" 3 "original" } }
 ! { dg-final { scan-tree-dump-times " = _gfortran_internal_pack \\(&parm" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(&array_int\\)" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(real\\(kind=4\\).0:. . restrict\\) array_real_alloc.data" 1 "original" } }
@@ -165,7 +165,6 @@ end
 ! { dg-final { scan-tree-dump-times "\\.data = \\(void .\\) &array_t1.0.;" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(struct t1.0:. .\\) parm" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(struct t2.0:. . restrict\\) array_t2_alloc.data\\);" 1 "original" } }
-! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(struct t3.0:. .\\) array_t3_ptr.data\\);" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(struct t1.0:. . restrict\\) array_class_t1_alloc._data.data\\);" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "sub_array_assumed \\(\\(struct t1.0:. .\\) array_class_t1_ptr._data.data\\);" 1 "original" } }
 
diff --git a/gcc/testsuite/gfortran.dg/internal_pack_13.f90 b/gcc/testsuite/gfortran.dg/internal_pack_13.f90
new file mode 100644
index 00000000000..21fdc541878
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/internal_pack_13.f90
@@ -0,0 +1,34 @@
+! { dg-do run }
+!
+! PR 55072: [4.6/4.7/4.8 Regression] Missing internal_pack leads to wrong code with derived type
+!
+! Contributed by Tobias Burnus <burnus@gcc.gnu.org>
+
+implicit none
+type t
+integer :: i
+end type t
+type(t), target :: tgt(4,4)
+type(t), pointer :: p(:,:)
+integer :: i,j,k
+
+k = 1
+do i = 1, 4
+  do j = 1, 4
+    tgt(i,j)%i = k
+    k = k+1
+  end do
+end do
+
+p => tgt(::2,::2)
+print *,p%i
+call bar(p)
+
+contains
+
+  subroutine bar(x)
+    type(t) :: x(*)
+    print *,x(1:4)%i
+    if (any (x(1:4)%i /= [1, 9, 3, 11])) call abort()
+  end subroutine
+end
diff --git a/gcc/testsuite/gfortran.dg/internal_pack_14.f90 b/gcc/testsuite/gfortran.dg/internal_pack_14.f90
new file mode 100644
index 00000000000..1a4b3725fbb
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/internal_pack_14.f90
@@ -0,0 +1,34 @@
+! { dg-do run }
+!
+! PR 55072: [4.6/4.7/4.8 Regression] Missing internal_pack leads to wrong code with derived type
+!
+! Contributed by Janus Weil <janus@gcc.gnu.org>
+
+program GiBUU_neutrino_bug
+
+  Type particle
+    integer :: ID
+  End Type
+
+  type(particle), dimension(1:2,1:2) :: OutPart
+
+  OutPart(1,:)%ID = 1
+  OutPart(2,:)%ID = 2
+
+  call s1(OutPart(1,:))
+
+contains
+
+  subroutine s1(j)
+    type(particle) :: j(:)
+    print *,j(:)%ID
+    call s2(j)
+  end subroutine
+
+  subroutine s2(k)
+    type(particle) :: k(1:2)
+    print *,k(:)%ID
+    if (any (k(1:2)%ID /= [1, 1])) call abort()
+  end subroutine
+
+end