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go/test/fixedbugs/issue42784.go
Cuong Manh Le 7dc5d909fb cmd/compile: set OpLoad argument type interface{} correctly
CL 271906 allows loading single field of typed-interface{} OpIData, but
it does not update the corresponding selector type. So the generated
OpLoad has the named type instead, prevent it from being lowered by
lower pass.

Fixes #42784

Change-Id: Idf32e4f711731be09d508dd712b60bc8c58309bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/272466
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-11-24 03:06:15 +00:00

27 lines
426 B
Go

// compile
// Copyright 2020 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.
// Ensure that late expansion correctly set OpLoad argument type interface{}
package p
type iface interface {
m()
}
type it interface{}
type makeIface func() iface
func f() {
var im makeIface
e := im().(it)
g(e)
}
//go:noinline
func g(i it) {}