6g appears to permit semicolons to be omitted after qualified

identifiers.  This is not one of the exceptions permitted by
th spec.

R=ken,rsc
DELTA=11  (11 added, 0 deleted, 0 changed)
OCL=30844
CL=30852

test/bugs/bug166.go

+// 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
+import "os"
+func fn() {
+	var e os.Error
+	if e == nil {		// ERROR "syntax error|expected ';'"
+	}
+}

test/golden.out

@@ -111,6 +111,9 @@ BUG: should not compile
 =========== bugs/bug164.go
 BUG: should not compile
 
+=========== bugs/bug166.go
+BUG: errchk: command succeeded unexpectedly:  6g bugs/bug166.go
+
 =========== fixedbugs/bug016.go
 fixedbugs/bug016.go:7: constant -3 overflows uint