diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go
index 74281bc479..4ebd607c16 100644
--- a/src/cmd/compile/internal/noder/stencil.go
+++ b/src/cmd/compile/internal/noder/stencil.go
@@ -2085,6 +2085,7 @@ func startClosure(pos src.XPos, outer *ir.Func, typ *types.Type) (*ir.Func, []*t
 		fn.Dcl = append(fn.Dcl, arg)
 		f := types.NewField(pos, arg.Sym(), t)
 		f.Nname = arg
+		f.SetIsDDD(typ.Params().Field(i).IsDDD())
 		formalParams = append(formalParams, f)
 	}
 	for i := 0; i < typ.NumResults(); i++ {
diff --git a/test/typeparam/issue49432.go b/test/typeparam/issue49432.go
new file mode 100644
index 0000000000..21d6ec4b70
--- /dev/null
+++ b/test/typeparam/issue49432.go
@@ -0,0 +1,22 @@
+// compile -G=3
+
+// Copyright 2021 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 Handler func(in ...interface{})
+
+type Foo[T any] struct{}
+
+func (b *Foo[T]) Bar(in ...interface{}) {}
+
+func (b *Foo[T]) Init() {
+	_ = Handler(b.Bar)
+}
+
+func main() {
+	c := &Foo[int]{}
+	c.Init()
+}