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cmd/compile: fix stencil call expression

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In CL 349613,we have supported types.IdentityStrict() that does strict
type comparison.
Therefore, OCONVNOP becomes a possible case in call.X.Op().

Fixes #48604

Change-Id: Ibab27ffcf09656e3380314662f05f38294c1c6ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/351857
Trust: Dan Scales <danscales@google.com>
Trust: David Chase <drchase@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This commit is contained in:
korzhao 2021-09-25 04:42:57 +08:00 committed by Dan Scales
parent ff8a7e513b
commit 54079dfd7f
2 changed files with 28 additions and 0 deletions
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3
src/cmd/compile/internal/noder/stencil.go
View File

@ -1093,6 +1093,9 @@ func (subst *subster) node(n ir.Node) ir.Node {
case ir.OCALL, ir.OCALLFUNC, ir.OCALLMETH, ir.OCALLINTER:
transformCall(call)
case ir.OCONVNOP:
transformCall(call)
case ir.OFUNCINST:
// A call with an OFUNCINST will get transformed
// in stencil() once we have created & attached the

25
test/typeparam/issue48604.go Normal file
View File

@ -0,0 +1,25 @@
// build -gcflags=-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 Foo[T any] interface {
CreateBar() Bar[T]
}
type Bar[T any] func() Bar[T]
func (f Bar[T]) CreateBar() Bar[T] {
return f
}
func abc[R any]() {
var _ Foo[R] = Bar[R](nil)()
}
func main() {
abc[int]()
}