2003-05-19 David Carlton <carlton@bactrian.org>

	Partial fix for PR c++/827.
	* cp-support.h: Include symtab.h.
	Declare cp_lookup_symbol_nonlocal, cp_lookup_symbol_namespace.
	* cp-namespace.c: Update contributors.
	(cp_lookup_symbol_nonlocal): New.
	(lookup_namespace_scope, cp_lookup_symbol_namespace)
	(lookup_symbol_file): Ditto.
	* c-lang.c (cplus_language_defn): Use cp_lookup_symbol_nonlocal.
	* block.h: Declare block_scope, block_using, block_global_block.
	* block.c (block_scope): New.
	(block_using, block_global_block): Ditto.
	* Makefile.in (cp_support_h): Depend on symtab_h.
	* config/djgpp/fnchange.lst: Add testsuite/gdb.c++/namespace1.cc.

2003-05-19  David Carlton  <carlton@bactrian.org>

	* gdb.c++/namespace.exp: Add namespace scope and anonymous
	namespace tests.
	Bump copyright date.
	* gdb.c++/namespace.cc: Add anonymous namespace and namespace C.
	(main): Call C::D::marker2.
	* gdb.c++/namespace1.cc: New file.

1 files changed, 55 insertions, 2 deletions

diff --git a/gdb/block.c b/gdb/block.c
index 1360a1589d0..3396c8aa96c 100644
--- a/gdb/block.c
+++ b/gdb/block.c
@@ -155,8 +155,25 @@ block_for_pc (register CORE_ADDR pc)
   return block_for_pc_sect (pc, find_pc_mapped_section (pc));
 }
 
-/* Now come some functions designed to deal with C++ namespace
-   issues.  */
+/* Now come some functions designed to deal with C++ namespace issues.
+   The accessors are safe to use even in the non-C++ case.  */
+
+/* This returns the namespace that BLOCK is enclosed in, or "" if it
+   isn't enclosed in a namespace at all.  This travels the chain of
+   superblocks looking for a scope, if necessary.  */
+
+const char *
+block_scope (const struct block *block)
+{
+  for (; block != NULL; block = BLOCK_SUPERBLOCK (block))
+    {
+      if (BLOCK_NAMESPACE (block) != NULL
+	  && BLOCK_NAMESPACE (block)->scope != NULL)
+	return BLOCK_NAMESPACE (block)->scope;
+    }
+
+  return "";
+}
 
 /* Set BLOCK's scope member to SCOPE; if needed, allocate memory via
    OBSTACK.  (It won't make a copy of SCOPE, however, so that already
@@ -171,6 +188,27 @@ block_set_scope (struct block *block, const char *scope,
   BLOCK_NAMESPACE (block)->scope = scope;
 }
 
+/* This returns the first using directives associated to BLOCK, if
+   any.  */
+
+/* FIXME: carlton/2003-04-23: This uses the fact that we currently
+   only have using directives in static blocks, because we only
+   generate using directives from anonymous namespaces.  Eventually,
+   when we support using directives everywhere, we'll want to replace
+   this by some iterator functions.  */
+
+struct using_direct *
+block_using (const struct block *block)
+{
+  const struct block *static_block = block_static_block (block);
+
+  if (static_block == NULL
+      || BLOCK_NAMESPACE (static_block) == NULL)
+    return NULL;
+  else
+    return BLOCK_NAMESPACE (static_block)->using;
+}
+
 /* Set BLOCK's using member to USING; if needed, allocate memory via
    OBSTACK.  (It won't make a copy of USING, however, so that already
    has to be allocated correctly.)  */
@@ -214,3 +252,18 @@ block_static_block (const struct block *block)
 
   return block;
 }
+
+/* Return the static block associated to BLOCK.  Return NULL if block
+   is NULL.  */
+
+const struct block *
+block_global_block (const struct block *block)
+{
+  if (block == NULL)
+    return NULL;
+
+  while (BLOCK_SUPERBLOCK (block) != NULL)
+    block = BLOCK_SUPERBLOCK (block);
+
+  return block;
+}