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master
test/fixedbugs/issue71675.go
99 строк
1 KB
David Chase
cmd/compile, runtime: use deferreturn as target PC for recover from deferrangefunc
19 фев 2025, 19:27
19 фев 2025, 19:27
9ddeac3
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// run // Copyright 2025 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. package main //go:noinline func i() { for range yieldInts { defer func() { println("I") recover() }() } // This panic causes dead code elimination of the return block. // The compiler should nonetheless emit a deferreturn. panic("i panic") } //go:noinline func h() { defer func() { println("H first") }() for range yieldInts { defer func() { println("H second") }() } defer func() { println("H third") }() for range yieldIntsPanic { defer func() { println("h recover:called") recover() }() } } //go:noinline func yieldInts(yield func(int) bool) { if !yield(0) { return } } //go:noinline func g() { defer func() { println("G first") }() for range yieldIntsPanic { defer func() { println("g recover:called") recover() }() } } //go:noinline func yieldIntsPanic(yield func(int) bool) { if !yield(0) { return } panic("yield stop") } //go:noinline func next(i int) int { if i == 0 { panic("next stop") } return i + 1 } //go:noinline func f() { defer func() { println("F first") }() for i := 0; i < 1; i = next(i) { defer func() { println("f recover:called") recover() }() } } func main() { f() println("f returned") g() println("g returned") h() println("h returned") i() println("i returned") }