1 files changed, 10 insertions, 1 deletions
diff --git a/test/const2.go b/test/const2.go
index bea1b9912..97d3d4c7d 100644
--- a/test/const2.go
+++ b/test/const2.go
@@ -1,12 +1,21 @@
-// errchk $G $D/$F.go
+// errorcheck
 
 // 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.
 
+// Verify that large integer constant expressions cause overflow.
+// Does not compile.
+
 package main
 
 const (
 	A int = 1
 	B byte;	// ERROR "type without expr|expected .=."
 )
+
+const LargeA = 1000000000000000000
+const LargeB = LargeA * LargeA * LargeA
+const LargeC = LargeB * LargeB * LargeB // ERROR "constant multiplication overflow"
+
+const AlsoLargeA = LargeA << 400 << 400 >> 400 >> 400 // ERROR "constant shift overflow"