re PR debug/19406 (ICE: in force_decl_die, at dwarf2out.c:12442)

	PR c++/19406
	* dwarf2out.c (gen_type_die_for_member): Handle FIELD_DECL.
	(dwarf2out_imported_module_or_decl): Use gen_type_die_for_member
	for FIELD_DECLs.

	* g++.dg/debug/using1.C: New test.

From-SVN: r97373

gcc/ChangeLog

+2005-04-01  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/19406
+	* dwarf2out.c (gen_type_die_for_member): Handle FIELD_DECL.
+	(dwarf2out_imported_module_or_decl): Use gen_type_die_for_member
+	for FIELD_DECLs.
+
 2005-04-01  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* doc/contrib.texi, doc/invoke.texi, doc/tm.texi: Fix typos.

gcc/dwarf2out.c

@@ -11222,13 +11222,27 @@ gen_type_die_for_member (tree type, tree member, dw_die_ref context_die)
   if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type))
       && ! lookup_decl_die (member))
     {
+      dw_die_ref type_die;
       gcc_assert (!decl_ultimate_origin (member));
 
       push_decl_scope (type);
+      type_die = lookup_type_die (type);
       if (TREE_CODE (member) == FUNCTION_DECL)
-	gen_subprogram_die (member, lookup_type_die (type));
+	gen_subprogram_die (member, type_die);
+      else if (TREE_CODE (member) == FIELD_DECL)
+	{
+	  /* Ignore the nameless fields that are used to skip bits but handle
+	     C++ anonymous unions and structs.  */
+	  if (DECL_NAME (member) != NULL_TREE
+	      || TREE_CODE (TREE_TYPE (member)) == UNION_TYPE
+	      || TREE_CODE (TREE_TYPE (member)) == RECORD_TYPE)
+	    {
+	      gen_type_die (member_declared_type (member), type_die);
+	      gen_field_die (member, type_die);
+	    }
+	}
       else
-	gen_variable_die (member, lookup_type_die (type));
+	gen_variable_die (member, type_die);
 
       pop_decl_scope ();
     }
@@ -12935,7 +12949,29 @@ dwarf2out_imported_module_or_decl (tree decl, tree context)
   if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == CONST_DECL)
     at_import_die = force_type_die (TREE_TYPE (decl));
   else
-    at_import_die = force_decl_die (decl);
+    {
+      at_import_die = lookup_decl_die (decl);
+      if (!at_import_die)
+	{
+	  /* If we're trying to avoid duplicate debug info, we may not have
+	     emitted the member decl for this field.  Emit it now.  */
+	  if (TREE_CODE (decl) == FIELD_DECL)
+	    {
+	      tree type = DECL_CONTEXT (decl);
+	      dw_die_ref type_context_die;
+
+	      if (TYPE_CONTEXT (type))
+		if (TYPE_P (TYPE_CONTEXT (type)))
+		  type_context_die = force_type_die (TYPE_CONTEXT (type));
+	      else
+		type_context_die = force_decl_die (TYPE_CONTEXT (type));
+	      else
+		type_context_die = comp_unit_die;
+	      gen_type_die_for_member (type, decl, type_context_die);
+	    }
+	  at_import_die = force_decl_die (decl);
+	}
+    }
 
   /* OK, now we have DIEs for decl as well as scope. Emit imported die.  */
   if (TREE_CODE (decl) == NAMESPACE_DECL)

gcc/testsuite/ChangeLog

+2005-04-01  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/19406
+	* g++.dg/debug/using1.C: New test.
+
 2005-04-01  Hans-Peter Nilsson  <hp@axis.com>
 
 	PR middle-end/20524

gcc/testsuite/g++.dg/debug/using1.C

+// PR c++/19406
+// { dg-do compile }
+
+struct A
+{
+  virtual int foo();
+  double d;
+};
+
+struct B : public A
+{
+  A::d;
+};
+
+B b;