re PR target/37290 (Endless recursion in cse_cc_succs)

	PR c++/37290
	* pt.c (tsubst) [TYPEOF_TYPE]: Set cp_unevaluated_operand.

From-SVN: r154018

gcc/cp/ChangeLog

 2009-11-07  Jason Merrill  <jason@redhat.com>
 
+	PR c++/37290
+	* pt.c (tsubst) [TYPEOF_TYPE]: Set cp_unevaluated_operand.
+
 	PR c++/18451
 	PR c++/40738
 	* cp-tree.h (cp_decl_specifier_seq): Add any_type_specifiers_p.

gcc/cp/pt.c

@@ -10220,10 +10220,17 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
       {
 	tree type;
 
-	type = finish_typeof (tsubst_expr 
-			      (TYPEOF_TYPE_EXPR (t), args,
+	++cp_unevaluated_operand;
+	++c_inhibit_evaluation_warnings;
+
+	type = tsubst_expr (TYPEOF_TYPE_EXPR (t), args,
 			    complain, in_decl,
-			       /*integral_constant_expression_p=*/false));
+			    /*integral_constant_expression_p=*/false);
+
+	--cp_unevaluated_operand;
+	--c_inhibit_evaluation_warnings;
+
+	type = finish_typeof (type);
 	return cp_build_qualified_type_real (type,
 					     cp_type_quals (t)
 					     | cp_type_quals (type),

gcc/testsuite/ChangeLog

+2009-11-07  Jason Merrill  <jason@redhat.com>
+
+	PR c++/37290
+	* g++.dg/ext/typeof11.C: New.
+
 2009-11-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/41985

gcc/testsuite/g++.dg/ext/typeof11.C

+// PR c++/37290
+
+template<typename T> T& ensure_obj(const T&);
+template <typename T>
+void func2(T& t)
+{
+  typedef __typeof__(ensure_obj(t)) ttt;
+  struct ttt1
+  {
+    ttt1( ttt arg0 ){}
+  }  tttt ( t );
+}
+int main()
+{
+  double d = 5;
+  func2(d);
+}
+