test: add test case for incorrect gccgo compilation error

Updates #23489

Change-Id: Ie846ccfe4c4d9295857f5da6863ac8f2ac0f2f6a
Reviewed-on: https://go-review.googlesource.com/89935
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/test/fixedbugs/issue23489.go b/test/fixedbugs/issue23489.go
new file mode 100644 (file)
index 0000000..1e64af1
--- /dev/null
+++ b/test/fixedbugs/issue23489.go
@@ -0,0 +1,20 @@
+// run
+
+// Copyright 2017 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.
+
+// Caused gccgo to issue a spurious compilation error.
+
+package main
+
+type T struct{}
+
+func (*T) Foo() {}
+
+type P = *T
+
+func main() {
+       var p P
+       p.Foo()
+}