gc: echo literal in error message

Fixes #1192.

R=ken2
CC=golang-dev
https://golang.org/cl/4794062
diff --git a/test/fixedbugs/bug349.go b/test/fixedbugs/bug349.go
new file mode 100644
index 0000000..0700597
--- /dev/null
+++ b/test/fixedbugs/bug349.go
@@ -0,0 +1,13 @@
+// errchk $G $D/$F.go
+
+// Copyright 2011 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.
+
+// issue 1192 - detail in error
+
+package main
+
+func foo() (a, b, c int) {
+	return 0, 1 2.01  // ERROR "unexpected literal 2.01"
+}