diff options
| -rw-r--r-- | src/cmd/compile/internal/noder/stencil.go | 4 | ||||
| -rw-r--r-- | test/fixedbugs/issue53309.go | 42 |
2 files changed, 44 insertions, 2 deletions
diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go index 88e4961666..3f12aa3cbd 100644 --- a/src/cmd/compile/internal/noder/stencil.go +++ b/src/cmd/compile/internal/noder/stencil.go @@ -1330,10 +1330,10 @@ func (g *genInst) dictPass(info *instInfo) { m = convertUsingDictionary(info, info.dictParam, m.Pos(), mce.X, m, m.Type()) } case ir.ODOTTYPE, ir.ODOTTYPE2: - if !m.Type().HasShape() { + dt := m.(*ir.TypeAssertExpr) + if !dt.Type().HasShape() && !dt.X.Type().HasShape() { break } - dt := m.(*ir.TypeAssertExpr) var rtype, itab ir.Node if dt.Type().IsInterface() || dt.X.Type().IsEmptyInterface() { // TODO(mdempsky): Investigate executing this block unconditionally. diff --git a/test/fixedbugs/issue53309.go b/test/fixedbugs/issue53309.go new file mode 100644 index 0000000000..2b752fe161 --- /dev/null +++ b/test/fixedbugs/issue53309.go @@ -0,0 +1,42 @@ +// 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 + +type TaskInput interface { + deps() []*taskDefinition +} + +type Value[T any] interface { + metaValue +} + +type metaValue interface { + TaskInput +} + +type taskDefinition struct { +} + +type taskResult struct { + task *taskDefinition +} + +func (tr *taskResult) deps() []*taskDefinition { + return nil +} + +func use[T any](v Value[T]) { + _, ok := v.(*taskResult) + if !ok { + panic("output must be *taskResult") + } +} + +func main() { + tr := &taskResult{&taskDefinition{}} + use(Value[string](tr)) +} |