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-rw-r--r--test/fixedbugs/issue53309.go42
1 files changed, 42 insertions, 0 deletions
diff --git a/test/fixedbugs/issue53309.go b/test/fixedbugs/issue53309.go
new file mode 100644
index 0000000..2b752fe
--- /dev/null
+++ b/test/fixedbugs/issue53309.go
@@ -0,0 +1,42 @@
+// run
+
+// Copyright 2022 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 main
+
+type TaskInput interface {
+ deps() []*taskDefinition
+}
+
+type Value[T any] interface {
+ metaValue
+}
+
+type metaValue interface {
+ TaskInput
+}
+
+type taskDefinition struct {
+}
+
+type taskResult struct {
+ task *taskDefinition
+}
+
+func (tr *taskResult) deps() []*taskDefinition {
+ return nil
+}
+
+func use[T any](v Value[T]) {
+ _, ok := v.(*taskResult)
+ if !ok {
+ panic("output must be *taskResult")
+ }
+}
+
+func main() {
+ tr := &taskResult{&taskDefinition{}}
+ use(Value[string](tr))
+}