mirror of
https://github.com/golang/go
synced 2024-11-23 19:50:06 -07:00
53fd522c0d
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
// errorcheck -0 -m -l
|
|
|
|
// Copyright 2015 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// Test escape analysis for function parameters.
|
|
|
|
// In this test almost everything is BAD except the simplest cases
|
|
// where input directly flows to output.
|
|
|
|
package foo
|
|
|
|
func f(buf []byte) []byte { // ERROR "leaking param: buf to result ~r1 level=0$"
|
|
return buf
|
|
}
|
|
|
|
func g(*byte) string
|
|
|
|
func h(e int) {
|
|
var x [32]byte // ERROR "moved to heap: x$"
|
|
g(&f(x[:])[0]) // ERROR "&f\(x\[:\]\)\[0\] escapes to heap$" "x escapes to heap$"
|
|
}
|
|
|
|
type Node struct {
|
|
s string
|
|
left, right *Node
|
|
}
|
|
|
|
func walk(np **Node) int { // ERROR "leaking param content: np"
|
|
n := *np
|
|
w := len(n.s)
|
|
if n == nil {
|
|
return 0
|
|
}
|
|
wl := walk(&n.left) // ERROR "walk &n.left does not escape"
|
|
wr := walk(&n.right) // ERROR "walk &n.right does not escape"
|
|
if wl < wr {
|
|
n.left, n.right = n.right, n.left
|
|
wl, wr = wr, wl
|
|
}
|
|
*np = n
|
|
return w + wl + wr
|
|
}
|
|
|
|
// Test for bug where func var f used prototype's escape analysis results.
|
|
func prototype(xyz []string) {} // ERROR "prototype xyz does not escape"
|
|
func bar() {
|
|
var got [][]string
|
|
f := prototype
|
|
f = func(ss []string) { got = append(got, ss) } // ERROR "leaking param: ss" "func literal does not escape"
|
|
s := "string"
|
|
f([]string{s}) // ERROR "\[\]string literal escapes to heap"
|
|
}
|