re PR debug/51650 (LTO ICE in dwarf2out_finish, at dwarf2out.c:22501 while building libxul)

2011-12-22  Richard Guenther  <rguenther@suse.de>

	PR lto/51650
	* lto.c (uniquify_nodes): Register TYPE_DECLs with the
	debuginfo machinery.

	* g++.dg/lto/pr51650-1_0.C: New testcase.
	* g++.dg/lto/pr51650-2_0.C: Likewise.

From-SVN: r182625

gcc/ChangeLog

+2011-12-22  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/51650
+	* lto.c (uniquify_nodes): Register TYPE_DECLs with the
+	debuginfo machinery.
+
 2011-12-22  Bernd Schmidt  <bernds@codesourcery.com>
 
 	* tree-pass.h (pass_reload): Declare.

gcc/lto/lto.c

@@ -881,6 +881,9 @@ uniquify_nodes (struct data_in *data_in, unsigned from)
 	lto_register_var_decl_in_symtab (data_in, t);
       else if (TREE_CODE (t) == FUNCTION_DECL && !DECL_BUILT_IN (t))
 	lto_register_function_decl_in_symtab (data_in, t);
+      else if (!flag_wpa
+	       && TREE_CODE (t) == TYPE_DECL)
+	debug_hooks->type_decl (t, !DECL_FILE_SCOPE_P (t));
       else if (TYPE_P (t) && !TYPE_CANONICAL (t))
 	TYPE_CANONICAL (t) = gimple_register_canonical_type (t);
     }

gcc/testsuite/ChangeLog

+2011-12-22  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/51650
+	* g++.dg/lto/pr51650-1_0.C: New testcase.
+	* g++.dg/lto/pr51650-2_0.C: Likewise.
+
 2011-12-21  Richard Earnshaw  <rearnsha@arm.com>
 
 	PR target/51643

gcc/testsuite/g++.dg/lto/pr51650-1_0.C

+// { dg-lto-do link }
+// { dg-lto-options { { -flto -g } } }
+
+struct T;
+struct C 
+{
+    typedef ::T T;
+    static T *m ()
+      {
+	static T *d;
+	return d;
+      }
+};
+int
+fn ()
+{
+  C::m ();
+}
+int main() {}

gcc/testsuite/g++.dg/lto/pr51650-2_0.C

+// { dg-lto-do link }
+// { dg-lto-options { { -flto -g } } }
+
+typedef struct { } X;
+int main ()
+{
+  typedef X **P;
+  P g = 0;
+}