1// errorcheck -0 -m
2
3//go:build !goexperiment.newinliner
4
5// Copyright 2010 The Go Authors. All rights reserved.
6// Use of this source code is governed by a BSD-style
7// license that can be found in the LICENSE file.
8
9// Test, using compiler diagnostic flags, that the escape analysis is working.
10// Compiles but does not run.  Inlining is enabled.
11
12package foo
13
14var p *int
15
16func alloc(x int) *int { // ERROR "can inline alloc" "moved to heap: x"
17	return &x
18}
19
20var f func()
21
22func f1() {
23	p = alloc(2) // ERROR "inlining call to alloc" "moved to heap: x"
24
25	// Escape analysis used to miss inlined code in closures.
26
27	func() { // ERROR "can inline f1.func1"
28		p = alloc(3) // ERROR "inlining call to alloc"
29	}() // ERROR "inlining call to f1.func1" "inlining call to alloc" "moved to heap: x"
30
31	f = func() { // ERROR "func literal escapes to heap" "can inline f1.func2"
32		p = alloc(3) // ERROR "inlining call to alloc" "moved to heap: x"
33	}
34	f()
35}
36
37func f2() {} // ERROR "can inline f2"
38
39// No inline for recover; panic now allowed to inline.
40func f3() { panic(1) } // ERROR "can inline f3" "1 escapes to heap"
41func f4() { recover() }
42
43func f5() *byte { // ERROR "can inline f5"
44	type T struct {
45		x [1]byte
46	}
47	t := new(T) // ERROR "new.T. escapes to heap"
48	return &t.x[0]
49}
50
51func f6() *byte { // ERROR "can inline f6"
52	type T struct {
53		x struct {
54			y byte
55		}
56	}
57	t := new(T) // ERROR "new.T. escapes to heap"
58	return &t.x.y
59}
60