1 files changed, 62 insertions, 0 deletions
diff --git a/test/typeparam/issue51522b.go b/test/typeparam/issue51522b.go
new file mode 100644
index 0000000..115b6b9
--- /dev/null
+++ b/test/typeparam/issue51522b.go
@@ -0,0 +1,62 @@
+// 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
+
+func f[T comparable](i any) {
+	var t T
+
+	switch i {
+	case t:
+		// ok
+	default:
+		println("FAIL: switch i")
+	}
+
+	switch t {
+	case i:
+		// ok
+	default:
+		println("FAIL: switch t")
+	}
+}
+
+type myint int
+
+func (m myint) foo() {
+}
+
+type fooer interface {
+	foo()
+}
+
+type comparableFoo interface {
+	comparable
+	foo()
+}
+
+func g[T comparableFoo](i fooer) {
+	var t T
+
+	switch i {
+	case t:
+		// ok
+	default:
+		println("FAIL: switch i")
+	}
+
+	switch t {
+	case i:
+		// ok
+	default:
+		println("FAIL: switch t")
+	}
+}
+
+func main() {
+	f[int](0)
+	g[myint](myint(0))
+}