mirror of
https://github.com/golang/go
synced 2024-11-12 09:50:21 -07:00
f22ef70254
Historically, gc optimistically parsed the left-hand side of assignments as expressions. Later, if it discovered a ":=" assignment, it rewrote the parsed expressions as declarations. This failed in the presence of dot imports though, because we lost information about whether an imported object was named via a bare identifier "Foo" or a normal qualified "pkg.Foo". This CL fixes the issue by specially noding the left-hand side of ":=" assignments. Fixes #22076. Change-Id: I18190ecdb863112e7d009e1687e6112eec559921 Reviewed-on: https://go-review.googlesource.com/66810 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Daniel Martí <mvdan@mvdan.cc> Reviewed-by: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
25 lines
713 B
Go
25 lines
713 B
Go
// errorcheck -0 -live -d=compilelater
|
|
|
|
// Copyright 2017 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 20250: liveness differed with concurrent compilation
|
|
// due to propagation of addrtaken to outer variables for
|
|
// closure variables.
|
|
|
|
package p
|
|
|
|
type T struct {
|
|
s string
|
|
}
|
|
|
|
func f(a T) { // ERROR "live at entry to f: a"
|
|
var e interface{}
|
|
func() { // ERROR "live at entry to f.func1: a &e"
|
|
e = a.s // ERROR "live at call to convT2Estring: a &e" "live at call to writebarrierptr: a"
|
|
}() // ERROR "live at call to f.func1: e$"
|
|
// Before the fix, both a and e were live at the previous line.
|
|
_ = e
|
|
}
|