test: add test for issue 15084

The underlying issues have been fixed.
All the individual fixes have their own tests,
but it's still useful to have a plain source test.

Fixes #15084

Change-Id: I06c485a7d0716201bd57d1f3be53668dddd7ec14
Reviewed-on: https://go-review.googlesource.com/22426
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>

diff --git a/test/fixedbugs/issue15084.go b/test/fixedbugs/issue15084.go
new file mode 100644 (file)
index 0000000..7eb294e
--- /dev/null
+++ b/test/fixedbugs/issue15084.go
@@ -0,0 +1,30 @@
+// compile
+
+// Copyright 2016 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 x
+
+type T struct {
+       i int
+       e interface{}
+}
+
+func (t *T) F() bool {
+       if t.i != 0 {
+               return false
+       }
+       _, ok := t.e.(string)
+       return ok
+}
+
+var x int
+
+func g(t *T) {
+       if t.F() || true {
+               if t.F() {
+                       x = 0
+               }
+       }
+}