diff --git a/test/fixedbugs/issue28601.go b/test/fixedbugs/issue28601.go
new file mode 100644
index 0000000000..ec367e9282
--- /dev/null
+++ b/test/fixedbugs/issue28601.go
@@ -0,0 +1,15 @@
+// compile
+
+// Copyright 2018 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.
+
+// Failed to compile with gccgo.
+
+package p
+
+import "unsafe"
+
+const w int = int(unsafe.Sizeof(0))
+
+var a [w]byte