Update comment of linespec_lexer_lex_keyword.

[deliverable/binutils-gdb.git] / gdb / ada-varobj.c

diff --git a/gdb/ada-varobj.c b/gdb/ada-varobj.c
index 3da6018920ddf11d33f664b2340522011671e037..83d07073a298da8dc45b53a29bfe631281169102 100644 (file)
--- a/gdb/ada-varobj.c
+++ b/gdb/ada-varobj.c
@@ -1,6 +1,6 @@
 /* varobj support for Ada.
 
-   Copyright (C) 2012-2014 Free Software Foundation, Inc.
+   Copyright (C) 2012-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -240,6 +240,18 @@ ada_varobj_get_array_number_of_children (struct value *parent_value,
 {
   LONGEST lo, hi;
 
+  if (parent_value == NULL
+      && is_dynamic_type (TYPE_INDEX_TYPE (parent_type)))
+    {
+      /* This happens when listing the children of an object
+        which does not exist in memory (Eg: when requesting
+        the children of a null pointer, which is allowed by
+        varobj).  The array index type being dynamic, we cannot
+        determine how many elements this array has.  Just assume
+        it has none.  */
+      return 0;
+    }
+
   if (!get_array_bounds (parent_type, &lo, &hi))
     {
       /* Could not get the array bounds.  Pretend this is an empty array.  */
@@ -579,18 +591,12 @@ ada_varobj_describe_simple_array_child (struct value *parent_value,
                                        struct type **child_type,
                                        char **child_path_expr)
 {
-  struct type *index_desc_type;
   struct type *index_type;
   int real_index;
 
   gdb_assert (TYPE_CODE (parent_type) == TYPE_CODE_ARRAY);
 
-  index_desc_type = ada_find_parallel_type (parent_type, "___XA");
-  ada_fixup_array_indexes_type (index_desc_type);
-  if (index_desc_type)
-    index_type = TYPE_FIELD_TYPE (index_desc_type, 0);
-  else
-    index_type = TYPE_INDEX_TYPE (parent_type);
+  index_type = TYPE_INDEX_TYPE (parent_type);
   real_index = child_index + ada_discrete_type_low_bound (index_type);
 
   if (child_name)
@@ -900,28 +906,28 @@ ada_varobj_get_value_of_variable (struct value *value,
 /* Ada specific callbacks for VAROBJs.  */
 
 static int
-ada_number_of_children (struct varobj *var)
+ada_number_of_children (const struct varobj *var)
 {
   return ada_varobj_get_number_of_children (var->value, var->type);
 }
 
 static char *
-ada_name_of_variable (struct varobj *parent)
+ada_name_of_variable (const struct varobj *parent)
 {
   return c_varobj_ops.name_of_variable (parent);
 }
 
 static char *
-ada_name_of_child (struct varobj *parent, int index)
+ada_name_of_child (const struct varobj *parent, int index)
 {
   return ada_varobj_get_name_of_child (parent->value, parent->type,
                                       parent->name, index);
 }
 
 static char*
-ada_path_expr_of_child (struct varobj *child)
+ada_path_expr_of_child (const struct varobj *child)
 {
-  struct varobj *parent = child->parent;
+  const struct varobj *parent = child->parent;
   const char *parent_path_expr = varobj_get_path_expr (parent);
 
   return ada_varobj_get_path_expr_of_child (parent->value,
@@ -932,21 +938,22 @@ ada_path_expr_of_child (struct varobj *child)
 }
 
 static struct value *
-ada_value_of_child (struct varobj *parent, int index)
+ada_value_of_child (const struct varobj *parent, int index)
 {
   return ada_varobj_get_value_of_child (parent->value, parent->type,
                                        parent->name, index);
 }
 
 static struct type *
-ada_type_of_child (struct varobj *parent, int index)
+ada_type_of_child (const struct varobj *parent, int index)
 {
   return ada_varobj_get_type_of_child (parent->value, parent->type,
                                       index);
 }
 
 static char *
-ada_value_of_variable (struct varobj *var, enum varobj_display_formats format)
+ada_value_of_variable (const struct varobj *var,
+                      enum varobj_display_formats format)
 {
   struct value_print_options opts;
 
@@ -958,7 +965,7 @@ ada_value_of_variable (struct varobj *var, enum varobj_display_formats format)
 /* Implement the "value_is_changeable_p" routine for Ada.  */
 
 static int
-ada_value_is_changeable_p (struct varobj *var)
+ada_value_is_changeable_p (const struct varobj *var)
 {
   struct type *type = var->value ? value_type (var->value) : var->type;
 
@@ -984,7 +991,7 @@ ada_value_is_changeable_p (struct varobj *var)
 /* Implement the "value_has_mutated" routine for Ada.  */
 
 static int
-ada_value_has_mutated (struct varobj *var, struct value *new_val,
+ada_value_has_mutated (const struct varobj *var, struct value *new_val,
                       struct type *new_type)
 {
   int i;
@@ -1032,5 +1039,6 @@ const struct lang_varobj_ops ada_varobj_ops =
   ada_type_of_child,
   ada_value_of_variable,
   ada_value_is_changeable_p,
-  ada_value_has_mutated
+  ada_value_has_mutated,
+  varobj_default_is_path_expr_parent
 };