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54af752865
Was not handling &x.y[0] and &x.y.z correctly where y is an array or struct-valued field (not a pointer). R=ken2 CC=golang-dev https://golang.org/cl/6551059
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
// errorcheck -0 -m
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test, using compiler diagnostic flags, that the escape analysis is working.
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// Compiles but does not run. Inlining is enabled.
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package foo
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var p *int
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func alloc(x int) *int { // ERROR "can inline alloc" "moved to heap: x"
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return &x // ERROR "&x escapes to heap"
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}
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var f func()
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func f1() {
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p = alloc(2) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
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// Escape analysis used to miss inlined code in closures.
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func() { // ERROR "func literal does not escape"
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p = alloc(3) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
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}()
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f = func() { // ERROR "func literal escapes to heap"
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p = alloc(3) // ERROR "inlining call to alloc" "&x escapes to heap" "moved to heap: x"
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}
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f()
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}
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func f2() {} // ERROR "can inline f2"
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// No inline for panic, recover.
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func f3() { panic(1) }
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func f4() { recover() }
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func f5() *byte {
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type T struct {
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x [1]byte
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}
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t := new(T) // ERROR "new.T. escapes to heap"
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return &t.x[0] // ERROR "&t.x.0. escapes to heap"
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}
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func f6() *byte {
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type T struct {
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x struct {
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y byte
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}
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}
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t := new(T) // ERROR "new.T. escapes to heap"
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return &t.x.y // ERROR "&t.x.y escapes to heap"
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}
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