associated.c: Check for associated(NULL,NULL).

2006-12-17  Tobias Burnus  <burnus@net-b.de>

    * intrinsics/associated.c: Check for associated(NULL,NULL).

2006-12-17  Tobias Burnus  <burnus@net-b.de>

    * gfortran.dg/associated_2.f90: Add test for associated(NULL,NULL).

From-SVN: r119989

gcc/testsuite/ChangeLog

+2006-12-17  Tobias Burnus  <burnus@net-b.de>
+
+	* gfortran.dg/associated_2.f90: Add test for associated(NULL,NULL).
+
 2006-12-16  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
 	PR middle-end/7651

gcc/testsuite/gfortran.dg/associated_2.f90

@@ -17,6 +17,8 @@ contains
 ! the target argument is not present (case (i))
     if (.not. associated (b)) call abort ()
     deallocate (a)
+    nullify(a)
+    if(associated(a,a)) call abort()
     allocate (a(2,1,2))
     b => a
     if (.not.associated (b)) call abort ()

libgfortran/ChangeLog

+2006-12-17  Tobias Burnus  <burnus@net-b.de>
+
+	* intrinsics/associated.c: Check for associated(NULL,NULL).
+
 2006-12-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libfortran/30145

libgfortran/intrinsics/associated.c

@@ -39,6 +39,8 @@ associated (const gfc_array_void *pointer, const gfc_array_void *target)
 {
   int n, rank;
 
+  if (GFC_DESCRIPTOR_DATA (pointer) == NULL)
+    return 0;
   if (GFC_DESCRIPTOR_DATA (pointer) != GFC_DESCRIPTOR_DATA (target))
     return 0;
   if (GFC_DESCRIPTOR_DTYPE (pointer) != GFC_DESCRIPTOR_DTYPE (target))