Fix MIPS bootstrap

gcc/ChangeLog:
	Fix bootstap on mips
	* dwarf2out.c (is_naming_typedef_dec): Built-in TYPE_DECLs cannot
	be naming typedefs.

gcc/testsuite/ChangeLog:
	Fix MIPS bootstrap
	* g++.dg/other/typedef4.C: New test.

From-SVN: r160599

gcc/ChangeLog

+2010-06-10  Dodji Seketeli  <dodji@redhat.com>
+
+	Fix bootstap on mips
+	* dwarf2out.c (is_naming_typedef_dec): Built-in TYPE_DECLs cannot
+	be naming typedefs.
+
 2010-06-11  Kai Tietz  <kai.tietz@onevision.com>
 
 	* system.h (helper_const_non_const_cast): New inline for

gcc/dwarf2out.c

@@ -19891,6 +19891,7 @@ is_naming_typedef_decl (const_tree decl)
   if (decl == NULL_TREE
       || TREE_CODE (decl) != TYPE_DECL
       || !is_tagged_type (TREE_TYPE (decl))
+      || DECL_IS_BUILTIN (decl)
       || is_redundant_typedef (decl)
       /* It looks like Ada produces TYPE_DECLs that are very similar
          to C++ naming typedefs but that have different

gcc/testsuite/ChangeLog

+2010-06-10  Dodji Seketeli  <dodji@redhat.com>
+
+	Fix MIPS bootstrap
+	* g++.dg/other/typedef4.C: New test.
+
 2010-06-10  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/44207

gcc/testsuite/g++.dg/other/typedef4.C

+// { dg-options "-g" }
+// { dg-do compile }
+
+// On some platforms like MIPS, __builtin_va_list is a
+// RECORD_TYPE. Make sure we don't wrongly try to generate debug info
+// for its TYPE_DECL and crash.
+typedef __builtin_va_list foo;