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-rw-r--r--test/fixedbugs/issue16130.go43
1 files changed, 43 insertions, 0 deletions
diff --git a/test/fixedbugs/issue16130.go b/test/fixedbugs/issue16130.go
new file mode 100644
index 0000000..c4e3ffd
--- /dev/null
+++ b/test/fixedbugs/issue16130.go
@@ -0,0 +1,43 @@
+// run
+
+// 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.
+
+// Test that an interface conversion error panics with an "interface
+// conversion" run-time error. It was (incorrectly) panicking with a
+// "nil pointer dereference."
+
+package main
+
+import (
+ "fmt"
+ "runtime"
+ "strings"
+)
+
+type I interface {
+ Get() int
+}
+
+func main() {
+ defer func() {
+ r := recover()
+ if r == nil {
+ panic("expected panic")
+ }
+ re, ok := r.(runtime.Error)
+ if !ok {
+ panic(fmt.Sprintf("got %T, expected runtime.Error", r))
+ }
+ if !strings.Contains(re.Error(), "interface conversion") {
+ panic(fmt.Sprintf("got %q, expected interface conversion error", re.Error()))
+ }
+ }()
+ e := (interface{})(0)
+ if _, ok := e.(I); ok {
+ panic("unexpected interface conversion success")
+ }
+ fmt.Println(e.(I))
+ panic("unexpected interface conversion success")
+}