2004-01-23 David Carlton <carlton@kealia.com>

	Partial workaround for PR c++/1511:
	* cp-namespace.c: Include frame.h.
	(cp_lookup_transparent_type): New
	(cp_lookup_transparent_type_loop): New.
	* cp-support.h: Declare cp_lookup_transparent_type.
	* symtab.c (basic_lookup_transparent_type): Renamed from
	lookup_transparent_type.
	(lookup_transparent_type): Replace old body by a call to
	current_language->la_lookup_transparent_type.
	* symtab.h: Update copyright.  Declare
	basic_lookup_transparent_type.
	* language.h: Update copyright.
	(struct language_defn): Add la_lookup_transparent_type.
	* language.c: Update copyright.
	(unknown_language_defn): Add basic_lookup_transparent_type.
	(auto_language_defn): Add basic_lookup_transparent_type.
	(local_language_defn): Add basic_lookup_transparent_type.
	* ada-lang.c: Update copyright.
	(ada_language_defn): Add basic_lookup_transparent_type.
	* c-lang.c: Update copyright.
	(c_language_defn): Add basic_lookup_transparent_type.
	(cplus_language_defn): Add basic_lookup_transparent_type.
	(asm_language_defn): Add basic_lookup_transparent_type.
	(minimal_language_defn): Add basic_lookup_transparent_type.
	* f-lang.c: Update copyright.
	(f_language_defn): Add basic_lookup_transparent_type.
	* jv-lang.c: Update copyright.
	(java_language_defn): Add basic_lookup_transparent_type.
	* m2-lang.c: Update copyright.
	(m2_language_defn): Add basic_lookup_transparent_type.
	* objc-lang.c: Update copyright.
	(objc_language_defn): Add basic_lookup_transparent_type.
	* p-lang.c: Update copyright.
	(p_language_defn): Add basic_lookup_transparent_type.
	* scm-lang.c: Update copyright.
	(scm_language_defn): Add basic_lookup_transparent_type.
	* Makefile.in (cp-namespace.o): Depend on frame.h.

2004-01-23  David Carlton  <carlton@kealia.com>

	* gdb.cp/rtti.exp: Don't include full path in ${srcfile}.  Add
	test for cp_lookup_transparent_type.
	* gdb.cp/rtti1.cc: Update copyright.  Add n2::func and refer_to;
	call them.

1 files changed, 73 insertions, 0 deletions

diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index fed440e..b9cc794 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -31,6 +31,7 @@
 #include "gdbtypes.h"
 #include "dictionary.h"
 #include "command.h"
+#include "frame.h"
 
 /* When set, the file that we're processing is known to have debugging
    info for C++ namespaces.  */
@@ -85,6 +86,10 @@ static struct symbol *lookup_symbol_file (const char *name,
 					  struct symtab **symtab,
 					  int anonymous_namespace);
 
+static struct type *cp_lookup_transparent_type_loop (const char *name,
+						     const char *scope,
+						     int scope_len);
+
 static void initialize_namespace_symtab (struct objfile *objfile);
 
 static struct block *get_possible_namespace_block (struct objfile *objfile);
@@ -551,6 +556,74 @@ cp_lookup_nested_type (struct type *parent_type,
     }
 }
 
+/* The C++-version of lookup_transparent_type.  */
+
+/* FIXME: carlton/2004-01-16: The problem that this is trying to
+   address is that, unfortunately, sometimes NAME is wrong: it may not
+   include the name of namespaces enclosing the type in question.
+   lookup_transparent_type gets called when the the type in question
+   is a declaration, and we're trying to find its definition; but, for
+   declarations, our type name deduction mechanism doesn't work.
+   There's nothing we can do to fix this in general, I think, in the
+   absence of debug information about namespaces (I've filed PR
+   gdb/1511 about this); until such debug information becomes more
+   prevalent, one heuristic which sometimes looks is to search for the
+   definition in namespaces containing the current namespace.
+
+   We should delete this functions once the appropriate debug
+   information becomes more widespread.  (GCC 3.4 will be the first
+   released version of GCC with such information.)  */
+
+struct type *
+cp_lookup_transparent_type (const char *name)
+{
+  /* First, try the honest way of looking up the definition.  */
+  struct type *t = basic_lookup_transparent_type (name);
+  const char *scope;
+
+  if (t != NULL)
+    return t;
+
+  /* If that doesn't work and we're within a namespace, look there
+     instead.  */
+  scope = block_scope (get_selected_block (0));
+
+  if (scope[0] == '\0')
+    return NULL;
+
+  return cp_lookup_transparent_type_loop (name, scope, 0);
+}
+
+/* Lookup the the type definition associated to NAME in
+   namespaces/classes containing SCOPE whose name is strictly longer
+   than LENGTH.  LENGTH must be the index of the start of a
+   component of SCOPE.  */
+
+static struct type *
+cp_lookup_transparent_type_loop (const char *name, const char *scope,
+				 int length)
+{
+  int scope_length = cp_find_first_component (scope + length);
+  char *full_name;
+
+  /* If the current scope is followed by "::", look in the next
+     component.  */
+  if (scope[scope_length] == ':')
+    {
+      struct type *retval
+	= cp_lookup_transparent_type_loop (name, scope, scope_length + 2);
+      if (retval != NULL)
+	return retval;
+    }
+
+  full_name = alloca (scope_length + 2 + strlen (name) + 1);
+  strncpy (full_name, scope, scope_length);
+  strncpy (full_name + scope_length, "::", 2);
+  strcpy (full_name + scope_length + 2, name);
+
+  return basic_lookup_transparent_type (full_name);
+}
+
 /* Now come functions for dealing with symbols associated to
    namespaces.  (They're used to store the namespaces themselves, not
    objects that live in the namespaces.)  These symbols come in two