blob: 3ec90139a37b24ed72659b523bf83ddc172142d9 [file] [log] [blame]
// Copyright 2017 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.
// Check correctness of various closure corner cases
// that are expected to be inlined
package main
var ok bool
var sink int
func main() {
{
if x := func() int { // ERROR "can inline main.func1"
return 1
}(); x != 1 { // ERROR "inlining call to main.func1"
ppanic("x != 1")
}
if x := func() int { // ERROR "can inline main.func2" "func literal does not escape"
return 1
}; x() != 1 { // ERROR "inlining call to main.func2"
ppanic("x() != 1")
}
}
{
if y := func(x int) int { // ERROR "can inline main.func3"
return x + 2
}(40); y != 42 { // ERROR "inlining call to main.func3"
ppanic("y != 42")
}
if y := func(x int) int { // ERROR "can inline main.func4" "func literal does not escape"
return x + 2
}; y(40) != 42 { // ERROR "inlining call to main.func4"
ppanic("y(40) != 42")
}
}
{
y := func(x int) int { // ERROR "can inline main.func5" "func literal does not escape"
return x + 2
}
y = func(x int) int { // ERROR "can inline main.func6" "func literal does not escape"
return x + 1
}
if y(40) != 41 {
ppanic("y(40) != 41")
}
}
{
func() { // ERROR "func literal does not escape"
y := func(x int) int { // ERROR "can inline main.func7.1" "func literal does not escape"
return x + 2
}
y = func(x int) int { // ERROR "can inline main.func7.2" "func literal does not escape"
return x + 1
}
if y(40) != 41 {
ppanic("y(40) != 41")
}
}()
}
{
y := func(x int) int { // ERROR "can inline main.func8" "func literal does not escape"
return x + 2
}
y, sink = func(x int) int { // ERROR "can inline main.func9" "func literal does not escape"
return x + 1
}, 42
if y(40) != 41 {
ppanic("y(40) != 41")
}
}
{
func() { // ERROR "func literal does not escape"
y := func(x int) int { // ERROR "can inline main.func10.1" "func literal does not escape"
return x + 2
}
y, sink = func(x int) int { // ERROR "can inline main.func10.2" "func literal does not escape"
return x + 1
}, 42
if y(40) != 41 {
ppanic("y(40) != 41")
}
}()
}
{
y := func(x int) int { // ERROR "can inline main.func11" "func literal does not escape"
return x + 2
}
y, sink = func() (func(int) int, int) { // ERROR "func literal does not escape"
return func(x int) int { // ERROR "can inline main.func12" "func literal escapes"
return x + 1
}, 42
}()
if y(40) != 41 {
ppanic("y(40) != 41")
}
}
{
func() { // ERROR "func literal does not escape"
y := func(x int) int { // ERROR "can inline main.func13.1" "func literal does not escape"
return x + 2
}
y, sink = func() (func(int) int, int) { // ERROR "func literal does not escape"
return func(x int) int { // ERROR "can inline main.func13.2" "func literal escapes"
return x + 1
}, 42
}()
if y(40) != 41 {
ppanic("y(40) != 41")
}
}()
}
{
y := func(x int) int { // ERROR "can inline main.func14" "func literal does not escape"
return x + 2
}
y, ok = map[int]func(int) int{ // ERROR "does not escape"
0: func(x int) int { return x + 1 }, // ERROR "can inline main.func15" "func literal escapes"
}[0]
if y(40) != 41 {
ppanic("y(40) != 41")
}
}
{
func() { // ERROR "func literal does not escape"
y := func(x int) int { // ERROR "can inline main.func16.1" "func literal does not escape"
return x + 2
}
y, ok = map[int]func(int) int{ // ERROR "does not escape"
0: func(x int) int { return x + 1 }, // ERROR "can inline main.func16.2" "func literal escapes"
}[0]
if y(40) != 41 {
ppanic("y(40) != 41")
}
}()
}
{
y := func(x int) int { // ERROR "can inline main.func17" "func literal does not escape"
return x + 2
}
y, ok = interface{}(func(x int) int { // ERROR "can inline main.func18" "does not escape"
return x + 1
}).(func(int) int)
if y(40) != 41 {
ppanic("y(40) != 41")
}
}
{
func() { // ERROR "func literal does not escape"
y := func(x int) int { // ERROR "can inline main.func19.1" "func literal does not escape"
return x + 2
}
y, ok = interface{}(func(x int) int { // ERROR "can inline main.func19.2" "does not escape"
return x + 1
}).(func(int) int)
if y(40) != 41 {
ppanic("y(40) != 41")
}
}()
}
{
x := 42
if y := func() int { // ERROR "can inline main.func20"
return x
}(); y != 42 { // ERROR "inlining call to main.func20"
ppanic("y != 42")
}
if y := func() int { // ERROR "can inline main.func21" "func literal does not escape"
return x
}; y() != 42 { // ERROR "inlining call to main.func21"
ppanic("y() != 42")
}
}
{
x := 42
if z := func(y int) int { // ERROR "func literal does not escape"
return func() int { // ERROR "can inline main.func22.1"
return x + y
}() // ERROR "inlining call to main.func22.1"
}(1); z != 43 {
ppanic("z != 43")
}
if z := func(y int) int { // ERROR "func literal does not escape"
return func() int { // ERROR "can inline main.func23.1"
return x + y
}() // ERROR "inlining call to main.func23.1"
}; z(1) != 43 {
ppanic("z(1) != 43")
}
}
{
a := 1
func() { // ERROR "func literal does not escape"
func() { // ERROR "can inline main.func24"
a = 2
}() // ERROR "inlining call to main.func24"
}()
if a != 2 {
ppanic("a != 2")
}
}
{
b := 2
func(b int) { // ERROR "func literal does not escape"
func() { // ERROR "can inline main.func25.1"
b = 3
}() // ERROR "inlining call to main.func25.1"
if b != 3 {
ppanic("b != 3")
}
}(b)
if b != 2 {
ppanic("b != 2")
}
}
{
c := 3
func() { // ERROR "func literal does not escape"
c = 4
func() { // ERROR "func literal does not escape"
if c != 4 {
ppanic("c != 4")
}
for i := 0; i < 10; i++ { // prevent inlining
}
}()
}()
if c != 4 {
ppanic("c != 4")
}
}
{
a := 2
if r := func(x int) int { // ERROR "func literal does not escape"
b := 3
return func(y int) int { // ERROR "func literal does not escape"
c := 5
return func(z int) int { // ERROR "can inline main.func27.1.1"
return a*x + b*y + c*z
}(10) // ERROR "inlining call to main.func27.1.1"
}(100)
}(1000); r != 2350 {
ppanic("r != 2350")
}
}
{
a := 2
if r := func(x int) int { // ERROR "func literal does not escape"
b := 3
return func(y int) int { // ERROR "func literal does not escape"
c := 5
func(z int) { // ERROR "can inline main.func28.1.1"
a = a * x
b = b * y
c = c * z
}(10) // ERROR "inlining call to main.func28.1.1"
return a + c
}(100) + b
}(1000); r != 2350 {
ppanic("r != 2350")
}
if a != 2000 {
ppanic("a != 2000")
}
}
}
//go:noinline
func ppanic(s string) { // ERROR "leaking param: s"
panic(s)
}