[Patch, Fortran] PR 56929 - Fix ICE with scalar coarrays

[Patch, Fortran] PR 56929 - Fix ICE with scalar coarrays

[Tobias Burnus]

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Allocatable scalar coarrays use an error descriptor...

Build and regtested on x86-64-gnu-linux.
OK for the trunk?

Tobias

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2013-04-12  Tobias Burnus  <burnus@net-b.de>

	PR fortran/56929
	* trans-array.c (duplicate_allocatable): Fix handling
	of scalar coarrays.

2013-04-12  Tobias Burnus  <burnus@net-b.de>

	PR fortran/56929
	* gfortran.dg/coarray/alloc_comp_2.f90: New.

diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c
index 05de50d..6cb85d4 100644
--- a/gcc/fortran/trans-array.c
+++ b/gcc/fortran/trans-array.c
@@ -7321,7 +7321,7 @@ duplicate_allocatable (tree dest, tree src, tree type, int rank,
      allocate memory to the destination.  */
   gfc_init_block (&block);
 
-  if (rank == 0)
+  if (!GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (dest)))
     {
       tmp = null_pointer_node;
       tmp = fold_build2_loc (input_location, MODIFY_EXPR, type, dest, tmp);
@@ -7348,7 +7348,11 @@ duplicate_allocatable (tree dest, tree src, tree type, int rank,
       null_data = gfc_finish_block (&block);
 
       gfc_init_block (&block);
-      nelems = get_full_array_size (&block, src, rank);
+      if (rank)
+	nelems = get_full_array_size (&block, src, rank);
+      else
+	nelems = gfc_index_one_node;
+
       tmp = fold_convert (gfc_array_index_type,
 			  TYPE_SIZE_UNIT (gfc_get_element_type (type)));
       size = fold_build2_loc (input_location, MULT_EXPR, gfc_array_index_type,
@@ -7374,7 +7378,7 @@ duplicate_allocatable (tree dest, tree src, tree type, int rank,
 
   /* Null the destination if the source is null; otherwise do
      the allocate and copy.  */
-  if (rank == 0)
+  if (!GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (src)))
     null_cond = src;
   else
     null_cond = gfc_conv_descriptor_data_get (src);
--- /dev/null	2013-04-12 09:16:45.096038934 +0200
+++ gcc/gcc/testsuite/gfortran.dg/coarray/alloc_comp_2.f90	2013-04-12 17:36:48.867633882 +0200
@@ -0,0 +1,19 @@
+! { dg-do compile }
+!
+! PR fortran/56929
+!
+! Contributed by Damian Rouson
+!
+! Allocatable scalar corrays were mishandled (ICE)
+!
+module parent_coarray_component
+  type parent
+    real, allocatable :: dummy[:]
+  end type
+  type, extends(parent) :: child
+  end type
+contains
+  subroutine do_something(this)
+    class(child) this
+  end 
+end

Re: [Patch, Fortran] PR 56929 - Fix ICE with scalar coarrays

[Janus Weil]

> Allocatable scalar coarrays use an error descriptor...
>
> Build and regtested on x86-64-gnu-linux.
> OK for the trunk?

Ok (looks pretty much obvious).

Thanks,
Janus