[SCM] archer-jankratochvil-vla: Fix the excessive memory reading: http://sourceware.org/bugzilla/show_bug.cgi?id=9395#c7 - Bugreported by Joachim Protze.

[jkratoch@sourceware.org]

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- Log -----------------------------------------------------------------
commit 530ce8bb0aeeb513f566da7a7fae46d6414f8dc1
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date:   Fri Feb 25 19:08:16 2011 +0100

    Fix the excessive memory reading:
      http://sourceware.org/bugzilla/show_bug.cgi?id=9395#c7
      - Bugreported by Joachim Protze.

-----------------------------------------------------------------------

Summary of changes:
 gdb/eval.c     |   19 +++++++++++++++++--
 gdb/gdbtypes.c |    2 ++
 2 files changed, 19 insertions(+), 2 deletions(-)

First 500 lines of diff:
diff --git a/gdb/eval.c b/gdb/eval.c
index f4ccc89..e27a7aa 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -513,7 +513,7 @@ value_f90_subarray (struct value *array, struct expression *exp, int *pos,
   struct type *new_array_type;
 
   /* Type being iterated for each dimension.  */
-  struct type *type;
+  struct type *type, *type_last_target;
 
   /* Pointer in the last holder to the type of current dimension.  */
   struct type **typep = &new_array_type;
@@ -533,6 +533,7 @@ value_f90_subarray (struct value *array, struct expression *exp, int *pos,
 	};
     }
   *subscript_array;
+  struct type **type_array;
   int i;
   struct cleanup *old_chain;
   CORE_ADDR value_byte_address, value_byte_offset = 0;
@@ -678,7 +679,21 @@ value_f90_subarray (struct value *array, struct expression *exp, int *pos,
 	}
     }
 
-  check_typedef (new_array_type);
+  type_last_target = type;
+  type_array = alloca (sizeof (*type_array) * nargs);
+  i = 0;
+  for (type = new_array_type; type != type_last_target;
+       type = TYPE_TARGET_TYPE (type))
+    type_array[i++] = type;
+  while (i > 0)
+    {
+      struct type *type = type_array[--i];
+
+      /* Force TYPE_LENGTH (type) recalculation.  */
+      TYPE_TARGET_STUB (type) = 1;
+      check_typedef (type);
+    }
+
   saved_array = array;
   array = allocate_value_lazy (new_array_type);
   VALUE_LVAL (array) = VALUE_LVAL (saved_array);
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index ec5ad9c..e3b9eac 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -1734,6 +1734,8 @@ check_typedef (struct type *type)
       htab_delete (copied_types);
 
       gdb_assert (TYPE_DYNAMIC (type) == 0);
+      /* Force TYPE_LENGTH (type) recalculation.  */
+      TYPE_DYNAMIC (type) = 1;
     }
 
   if (TYPE_TARGET_STUB (type) || TYPE_DYNAMIC (type))


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