re PR debug/41170 (namespace DIE not generated when it contains only a typedef)

Fix for PR debug/41170

gcc/ChangeLog:
	PR debug/41770
	* dwarf2out.c (get_context_die): Declare this static function.
	(gen_type_die_with_usage): Make sure a DIE is a generated for
	the context of a typedef.

gcc/testsuite/ChangeLog:
	PR debug/41770
	* debug/dwarf2/namespace-1.C: New test.

From-SVN: r151138

gcc/ChangeLog

+2009-08-27  Dodji Seketeli  <dodji@redhat.com>
+
+	PR debug/41770
+	* dwarf2out.c (get_context_die): Declare this static function.
+	(gen_type_die_with_usage): Make sure a DIE is a generated for
+	the context of a typedef.
+
 2009-08-26  Anatoly Sokolov  <aesok@post.ru>
 
 	* doc/invoke.texi (AVR Options): Remove documentation of -minit-stack

gcc/dwarf2out.c

@@ -5887,6 +5887,7 @@ static void gen_type_die (tree, dw_die_ref);
 static void gen_block_die (tree, dw_die_ref, int);
 static void decls_for_scope (tree, dw_die_ref, int);
 static int is_redundant_typedef (const_tree);
+static inline dw_die_ref get_context_die (tree);
 static void gen_namespace_die (tree, dw_die_ref);
 static void gen_decl_die (tree, tree, dw_die_ref);
 static dw_die_ref force_decl_die (tree);
@@ -15436,7 +15437,7 @@ gen_type_die_with_usage (tree type, dw_die_ref context_die,
          the type description DIE we want to generate.  */
       if (DECL_CONTEXT (TYPE_NAME (type))
 	  && TREE_CODE (DECL_CONTEXT (TYPE_NAME (type))) == NAMESPACE_DECL)
-	context_die = lookup_decl_die (DECL_CONTEXT (TYPE_NAME (type)));
+	context_die = get_context_die (DECL_CONTEXT (TYPE_NAME (type)));
 
       TREE_ASM_WRITTEN (type) = 1;
       gen_decl_die (TYPE_NAME (type), NULL, context_die);

gcc/testsuite/ChangeLog

+2009-08-27  Dodji Seketeli  <dodji@redhat.com>
+
+	PR debug/41770
+	* debug/dwarf2/namespace-1.C: New test.
+
 2009-08-26  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR fortran/41162

gcc/testsuite/g++.dg/debug/dwarf2/namespace-1.C

+// Contributed by Dodji Seketeli <dodji@redhat.com>
+// Origin PR debug/41170
+// { dg-options "-g -dA" }
+//
+// We want to test that there is a DW_TAG_namespace DIE DW_AT_name is set
+// to "not_emitted". That namespace die has a child DW_TAG_typedef DIE
+// which DW_AT_name is the null terminated string "T".
+// { dg-final { scan-assembler-times "DIE +\\(.*?\\) DW_TAG_namespace" 1 } }
+// { dg-final { scan-assembler-times "DW_AT_name: \"not_emitted\"" 1 } }
+// { dg-final { scan-assembler-times "DIE +\\(.*?\\) DW_TAG_typedef" 1 } }
+// { dg-final { scan-assembler-times "\.ascii \"T.0\"\[\t \]+# DW_AT_name" 1 } }
+
+struct strukt
+{
+  int m;
+};
+
+namespace not_emitted
+{
+  typedef strukt T;
+}
+
+int
+main()
+{
+  not_emitted::T t;
+  t.m = 0;
+  return 0;
+}
+