gc: improved syntax errors
* example-based syntax errors (go.errors)
* enable bison's more specific errors
and translate grammar token names into
tokens like ++
* test cases
R=ken2, r, ken3
CC=golang-dev
https://golang.org/cl/194085
diff --git a/test/syntax/forvar.go b/test/syntax/forvar.go
new file mode 100644
index 0000000..f12ce55
--- /dev/null
+++ b/test/syntax/forvar.go
@@ -0,0 +1,10 @@
+// errchk $G -e $D/$F.go
+
+// Copyright 2010 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 main() {
+ for var x = 0; x < 10; x++ { // ERROR "var declaration not allowed in for initializer"
