1 files changed, 43 insertions, 0 deletions
diff --git a/test/fixedbugs/issue55122b.go b/test/fixedbugs/issue55122b.go
new file mode 100644
index 0000000000..a911a9f1b6
--- /dev/null
+++ b/test/fixedbugs/issue55122b.go
@@ -0,0 +1,43 @@
+// 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 main() {
+	for i := 0; i < 10000; i++ {
+		h(i)
+		sink = make([]byte, 1024) // generate some garbage
+	}
+}
+
+func h(iter int) {
+	var x [32]byte
+	for i := 0; i < 32; i++ {
+		x[i] = 99
+	}
+	g(&x)
+	if x == ([32]byte{}) {
+		return
+	}
+	for i := 0; i < 32; i++ {
+		println(x[i])
+	}
+	panic(iter)
+}
+
+//go:noinline
+func g(x interface{}) {
+	switch e := x.(type) {
+	case *[32]byte:
+		var c [32]byte
+		*e = c
+	case *[3]*byte:
+		var c [3]*byte
+		*e = c
+	}
+}
+
+var sink []byte