add & fix bug208, from ken.
fix bug198.

R=ken
OCL=35504
CL=35507
diff --git a/test/fixedbugs/bug198.go b/test/fixedbugs/bug198.go
new file mode 100644
index 0000000..ea71fad
--- /dev/null
+++ b/test/fixedbugs/bug198.go
@@ -0,0 +1,12 @@
+// errchk $G $D/$F.go
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+func f(a T) T { return a }	// ERROR "undefined"
+func main() {
+	x := f(0);
+	_ = x;
+}