mirror of
https://github.com/golang/go
synced 2024-09-05 07:54:46 +00:00
![Cuong Manh Le](/assets/img/avatar_default.png)
This CL changes "T literal.M" error message to "T{...}.M". It's clearer expression and focusing user on actual issue. Updates #38745 Change-Id: I84b455a86742f37e0bde5bf390aa02984eecc3c9 Reviewed-on: https://go-review.googlesource.com/c/go/+/253677 Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
175 lines
2.9 KiB
Go
175 lines
2.9 KiB
Go
// errorcheck -0 -m -l
|
|
|
|
// Copyright 2015 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.
|
|
|
|
// Test escape analysis with respect to field assignments.
|
|
|
|
package escape
|
|
|
|
var sink interface{}
|
|
|
|
type X struct {
|
|
p1 *int
|
|
p2 *int
|
|
a [2]*int
|
|
}
|
|
|
|
type Y struct {
|
|
x X
|
|
}
|
|
|
|
func field0() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
x.p1 = &i
|
|
sink = x.p1
|
|
}
|
|
|
|
func field1() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
// BAD: &i should not escape
|
|
x.p1 = &i
|
|
sink = x.p2
|
|
}
|
|
|
|
func field3() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
x.p1 = &i
|
|
sink = x // ERROR "x escapes to heap"
|
|
}
|
|
|
|
func field4() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var y Y
|
|
y.x.p1 = &i
|
|
x := y.x
|
|
sink = x // ERROR "x escapes to heap"
|
|
}
|
|
|
|
func field5() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
// BAD: &i should not escape here
|
|
x.a[0] = &i
|
|
sink = x.a[1]
|
|
}
|
|
|
|
// BAD: we are not leaking param x, only x.p2
|
|
func field6(x *X) { // ERROR "leaking param content: x$"
|
|
sink = x.p2
|
|
}
|
|
|
|
func field6a() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
// BAD: &i should not escape
|
|
x.p1 = &i
|
|
field6(&x)
|
|
}
|
|
|
|
func field7() {
|
|
i := 0
|
|
var y Y
|
|
y.x.p1 = &i
|
|
x := y.x
|
|
var y1 Y
|
|
y1.x = x
|
|
_ = y1.x.p1
|
|
}
|
|
|
|
func field8() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var y Y
|
|
y.x.p1 = &i
|
|
x := y.x
|
|
var y1 Y
|
|
y1.x = x
|
|
sink = y1.x.p1
|
|
}
|
|
|
|
func field9() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var y Y
|
|
y.x.p1 = &i
|
|
x := y.x
|
|
var y1 Y
|
|
y1.x = x
|
|
sink = y1.x // ERROR "y1\.x escapes to heap"
|
|
}
|
|
|
|
func field10() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var y Y
|
|
// BAD: &i should not escape
|
|
y.x.p1 = &i
|
|
x := y.x
|
|
var y1 Y
|
|
y1.x = x
|
|
sink = y1.x.p2
|
|
}
|
|
|
|
func field11() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
x := X{p1: &i}
|
|
sink = x.p1
|
|
}
|
|
|
|
func field12() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
// BAD: &i should not escape
|
|
x := X{p1: &i}
|
|
sink = x.p2
|
|
}
|
|
|
|
func field13() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
x := &X{p1: &i} // ERROR "&X{...} does not escape$"
|
|
sink = x.p1
|
|
}
|
|
|
|
func field14() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
// BAD: &i should not escape
|
|
x := &X{p1: &i} // ERROR "&X{...} does not escape$"
|
|
sink = x.p2
|
|
}
|
|
|
|
func field15() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
x := &X{p1: &i} // ERROR "&X{...} escapes to heap$"
|
|
sink = x
|
|
}
|
|
|
|
func field16() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
// BAD: &i should not escape
|
|
x.p1 = &i
|
|
var iface interface{} = x // ERROR "x does not escape"
|
|
x1 := iface.(X)
|
|
sink = x1.p2
|
|
}
|
|
|
|
func field17() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
x.p1 = &i
|
|
var iface interface{} = x // ERROR "x does not escape"
|
|
x1 := iface.(X)
|
|
sink = x1.p1
|
|
}
|
|
|
|
func field18() {
|
|
i := 0 // ERROR "moved to heap: i$"
|
|
var x X
|
|
// BAD: &i should not escape
|
|
x.p1 = &i
|
|
var iface interface{} = x // ERROR "x does not escape"
|
|
y, _ := iface.(Y) // Put X, but extracted Y. The cast will fail, so y is zero initialized.
|
|
sink = y // ERROR "y escapes to heap"
|
|
}
|