mirror of
https://github.com/golang/go
synced 2024-11-22 10:44:41 -07:00
983ac4b086
CL 278914 introduced NameOffsetExpr to avoid copying ONAME nodes and hacking up their offsets, but evidently staticinit subtly depended on the prior behavior to allow dynamic initialization of blank variables. This CL refactors the code somewhat to avoid using NameOffsetExpr with blank variables, and to instead create dynamic assignments directly to the global blank node. It also adds a check to NewNameOffsetExpr to guard against misuse like this, since I suspect there could be other cases still lurking within staticinit. (This code is overdue for an makeover anyway.) Thanks to thanm@ for bisect and test case minimization. Fixes #43677. Change-Id: Ic71cb5d6698382feb9548dc3bb9fd606b207a172 Reviewed-on: https://go-review.googlesource.com/c/go/+/283537 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
19 lines
387 B
Go
19 lines
387 B
Go
// compile
|
|
|
|
// 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.
|
|
|
|
// Issue #43677: ICE during compilation of dynamic initializers for
|
|
// composite blank variables.
|
|
|
|
package p
|
|
|
|
func f() *int
|
|
|
|
var _ = [2]*int{nil, f()}
|
|
|
|
var _ = struct{ x, y *int }{nil, f()}
|
|
|
|
var _ interface{} = f()
|