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22f24f90b5
This CL implements this initial design of testing.B.Loop's keep variable alive semantic: https://github.com/golang/go/issues/61515#issuecomment-2407963248. Fixes #73137. Change-Id: I8060470dbcb0dda0819334f3615cc391ff0f6501 Reviewed-on: https://go-review.googlesource.com/c/go/+/716660 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com>
51 lines
2 KiB
Go
51 lines
2 KiB
Go
// errorcheck -0 -m
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// Copyright 2025 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 keeping statements results in testing.B.Loop alive.
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// See issue #61515, #73137.
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package foo
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import "testing"
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func caninline(x int) int { // ERROR "can inline caninline"
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return x
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}
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var something int
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func caninlineNoRet(x int) { // ERROR "can inline caninlineNoRet"
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something = x
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}
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func caninlineVariadic(x ...int) { // ERROR "can inline caninlineVariadic" "x does not escape"
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something = x[0]
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}
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func test(b *testing.B, localsink, cond int) { // ERROR "leaking param: b"
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for i := 0; i < b.N; i++ {
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caninline(1) // ERROR "inlining call to caninline"
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}
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for b.Loop() { // ERROR "inlining call to testing\.\(\*B\)\.Loop"
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caninline(1) // ERROR "inlining call to caninline" "function result will be kept alive" ".* does not escape"
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caninlineNoRet(1) // ERROR "inlining call to caninlineNoRet" "function arg will be kept alive" ".* does not escape"
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caninlineVariadic(1) // ERROR "inlining call to caninlineVariadic" "function arg will be kept alive" ".* does not escape"
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caninlineVariadic(localsink) // ERROR "inlining call to caninlineVariadic" "localsink will be kept alive" ".* does not escape"
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localsink = caninline(1) // ERROR "inlining call to caninline" "localsink will be kept alive" ".* does not escape"
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localsink += 5 // ERROR "localsink will be kept alive" ".* does not escape"
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localsink, cond = 1, 2 // ERROR "localsink will be kept alive" "cond will be kept alive" ".* does not escape"
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if cond > 0 {
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caninline(1) // ERROR "inlining call to caninline" "function result will be kept alive" ".* does not escape"
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}
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switch cond {
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case 2:
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caninline(1) // ERROR "inlining call to caninline" "function result will be kept alive" ".* does not escape"
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}
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{
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caninline(1) // ERROR "inlining call to caninline" "function result will be kept alive" ".* does not escape"
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}
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}
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}
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