golang escape4 代码
文件路径：/test/escape4.go
/ 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
}
var f func()
func f1() {
p = alloc(2) / ERROR "inlining call to alloc" "moved to heap: x"
/ Escape analysis used to miss inlined code in closures.
func() { / ERROR "can inline f1.func1"
p = alloc(3) / ERROR "inlining call to alloc"
}() / ERROR "inlining call to f1.func1" "inlining call to alloc" "moved to heap: x"
f = func() { / ERROR "func literal escapes to heap" "can inline f1.func2"
p = alloc(3) / ERROR "inlining call to alloc" "moved to heap: x"
}
f()
}
func f2() {} / ERROR "can inline f2"
/ No inline for recover; panic now allowed to inline.
func f3() { panic(1) } / ERROR "can inline f3" "1 escapes to heap"
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]
}
func f6() *byte {
type T struct {
x struct {
y byte
}
}
t := new(T) / ERROR "new.T. escapes to heap"
return &t.x.y
}