mirror of
https://github.com/golang/go
synced 2024-11-26 15:56:57 -07:00
c2e0bf0abf
Some testdir tests fail if GOEXPERIMENT=cgocheck2 is set. Fix this by skipping these tests. Change-Id: I58d4ef0cceb86bcf93220b4a44de9b9dc4879b16 Reviewed-on: https://go-review.googlesource.com/c/go/+/499675 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Austin Clements <austin@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
// errorcheck -0 -live
|
|
|
|
//go:build !goexperiment.cgocheck2
|
|
// +build !goexperiment.cgocheck2
|
|
|
|
// Copyright 2016 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 15747: liveness analysis was marking heap-escaped params live too much,
|
|
// and worse was using the wrong bitmap bits to do so.
|
|
|
|
package p
|
|
|
|
var global *[]byte
|
|
|
|
type Q struct{}
|
|
|
|
type T struct{ M string }
|
|
|
|
var b bool
|
|
|
|
func f1(q *Q, xx []byte) interface{} { // ERROR "live at call to newobject: xx$" "live at entry to f1: xx$"
|
|
// xx was copied from the stack to the heap on the previous line:
|
|
// xx was live for the first two prints but then it switched to &xx
|
|
// being live. We should not see plain xx again.
|
|
if b {
|
|
global = &xx
|
|
}
|
|
xx, _, err := f2(xx, 5) // ERROR "live at call to f2: &xx$"
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
//go:noinline
|
|
func f2(d []byte, n int) (odata, res []byte, e interface{}) { // ERROR "live at entry to f2: d$"
|
|
if n > len(d) {
|
|
return d, nil, &T{M: "hello"} // ERROR "live at call to newobject: d"
|
|
}
|
|
res = d[:n]
|
|
odata = d[n:]
|
|
return
|
|
}
|