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-rw-r--r--test/defernil.go33
1 files changed, 33 insertions, 0 deletions
diff --git a/test/defernil.go b/test/defernil.go
new file mode 100644
index 0000000..5be3abd
--- /dev/null
+++ b/test/defernil.go
@@ -0,0 +1,33 @@
+// run
+
+// Copyright 2019 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.
+
+// Check that deferring a nil function causes a proper
+// panic when the deferred function is invoked (not
+// when the function is deferred).
+// See Issue #8047 and #34926.
+
+package main
+
+var x = 0
+
+func main() {
+ defer func() {
+ err := recover()
+ if err == nil {
+ panic("did not panic")
+ }
+ if x != 1 {
+ panic("FAIL")
+ }
+ }()
+ f()
+}
+
+func f() {
+ var nilf func()
+ defer nilf()
+ x = 1
+}