diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go index 1534a1fa49ccfd..1ba561b8b960d6 100644 --- a/src/cmd/compile/internal/noder/stencil.go +++ b/src/cmd/compile/internal/noder/stencil.go @@ -1357,7 +1357,7 @@ func (g *genInst) dictPass(info *instInfo) { } case ir.ODOTTYPE, ir.ODOTTYPE2: dt := m.(*ir.TypeAssertExpr) - if !dt.Type().HasShape() && !dt.X.Type().HasShape() { + if !dt.Type().HasShape() && !(dt.X.Type().HasShape() && !dt.X.Type().IsEmptyInterface()) { break } var rtype, itab ir.Node diff --git a/test/typeparam/issue53762.go b/test/typeparam/issue53762.go new file mode 100644 index 00000000000000..4d959888544daf --- /dev/null +++ b/test/typeparam/issue53762.go @@ -0,0 +1,18 @@ +// 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 main + +type Value[T any] interface { +} + +func use[T any](v Value[T]) { + _, _ = v.(int) +} + +func main() { + use(Value[int](1)) +}