diff --git a/src/cmd/compile/internal/staticinit/sched.go b/src/cmd/compile/internal/staticinit/sched.go
index 12bf932a7b..fde128ec86 100644
--- a/src/cmd/compile/internal/staticinit/sched.go
+++ b/src/cmd/compile/internal/staticinit/sched.go
@@ -333,6 +333,11 @@ func (s *Schedule) StaticAssign(l *ir.Name, loff int64, r ir.Node, typ *types.Ty
 			return val.Op() == ir.ONIL
 		}
 
+		if base.Debug.Unified != 0 && val.Type().HasShape() {
+			// See comment in cmd/compile/internal/walk/convert.go:walkConvInterface
+			return false
+		}
+
 		reflectdata.MarkTypeUsedInInterface(val.Type(), l.Linksym())
 
 		var itab *ir.AddrExpr
diff --git a/test/fixedbugs/issue56923.go b/test/fixedbugs/issue56923.go
new file mode 100644
index 0000000000..700a1046a9
--- /dev/null
+++ b/test/fixedbugs/issue56923.go
@@ -0,0 +1,28 @@
+// compile
+
+// 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 p
+
+type Eq[T any] interface {
+	Eqv(a T, b T) bool
+}
+
+type EqFunc[T any] func(a, b T) bool
+
+func (r EqFunc[T]) Eqv(a, b T) bool {
+	return r(a, b)
+}
+
+func New[T any](f func(a, b T) bool) Eq[T] {
+	return EqFunc[T](f)
+
+}
+
+func Equal(a, b []byte) bool {
+	return string(a) == string(b)
+}
+
+var Bytes Eq[[]byte] = New(Equal)