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master
test/fixedbugs/issue78081.go
47 строк
928 B
Keith Randall
Revert "runtime: disable test for 78081"
21 мар 2026, 04:56
21 мар 2026, 04:56
c60392d
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// run // Copyright 2026 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 import "runtime" func main() { runtime.GOMAXPROCS(2) c := make(chan bool) for i := 0; i < 16; i++ { go func() { var b []byte for range 100000 { f(&b) } c <- true }() } for i := 0; i < 16; i++ { <-c } } var n int = 64 // constant, but the compiler doesn't know that //go:noinline func f(sink *[]byte) { useStack(64) // Use 64KB of stack, so that shrinking might happen below. x := make([]int, n, 128) // on stack _ = append(x, make([]int, 128-n)...) // memclrNoHeapPointersPreemptible call is here *sink = make([]byte, 1024) // make some garbage to cause GC } //go:noinline func useStack(depth int) { var b [128]int if depth == b[depth%len(b)] { // depth == 0 return } useStack(depth - 1) }