diff options
| -rw-r--r-- | src/cmd/compile/internal/noder/stencil.go | 3 | ||||
| -rw-r--r-- | test/typeparam/issue54135.go | 28 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go index 280f7cdf1c..d3f51e00cd 100644 --- a/src/cmd/compile/internal/noder/stencil.go +++ b/src/cmd/compile/internal/noder/stencil.go @@ -1357,6 +1357,9 @@ func (g *genInst) dictPass(info *instInfo) { } case ir.ODOTTYPE, ir.ODOTTYPE2: dt := m.(*ir.TypeAssertExpr) + if dt.Type().IsEmptyInterface() || (dt.Type().IsInterface() && !dt.Type().HasShape()) { + break + } if !dt.Type().HasShape() && !(dt.X.Type().HasShape() && !dt.X.Type().IsEmptyInterface()) { break } diff --git a/test/typeparam/issue54135.go b/test/typeparam/issue54135.go new file mode 100644 index 0000000000..dffef60d0d --- /dev/null +++ b/test/typeparam/issue54135.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 main + +type Foo struct{} + +func (Foo) Blanker() {} + +type Bar[T any] interface { + Blanker() +} + +type Baz interface { + Some() +} + +func check[T comparable](p Bar[T]) { + _, _ = p.(any) + _, _ = p.(Baz) +} + +func main() { + check[int](Foo{}) +} |