1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// errorcheck -0 -m
// Copyright 2010 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, using compiler diagnostic flags, that the escape analysis is working.
// Compiles but does not run. Inlining is enabled.
package foo
var p *int
func alloc(x int) *int { // ERROR "can inline alloc" "moved to heap: x"
return &x // ERROR "&x escapes to heap"
}
var f func()
func f1() {
p = alloc(2) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
// Escape analysis used to miss inlined code in closures.
func() { // ERROR "func literal does not escape"
p = alloc(3) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
}()
f = func() { // ERROR "func literal escapes to heap"
p = alloc(3) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
}
f()
}
func f2() {} // ERROR "can inline f2"
// No inline for panic, recover.
func f3() { panic(1) }
func f4() { recover() }
func f5() *byte {
type T struct {
x [1]byte
}
t := new(T) // ERROR "new.T. escapes to heap"
return &t.x[0] // ERROR "&t.x.0. escapes to heap"
}
func f6() *byte {
type T struct {
x struct {
y byte
}
}
t := new(T) // ERROR "new.T. escapes to heap"
return &t.x.y // ERROR "&t.x.y escapes to heap"
}
|
