diff --git a/test/stack.go b/test/stack.go new file mode 100644 index 0000000000..9fecc9102c --- /dev/null +++ b/test/stack.go @@ -0,0 +1,52 @@ +// $G $D/$F.go && $L $F.$A && ./$A.out + +// Copyright 2009 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. + +// Try to tickle stack splitting bugs by doing +// go and defer at different stack depths. + +package main + +type T [20] int; + +func g(c chan int, t T) { + s := 0; + for i := 0; i < len(t); i++ { + s += t[i]; + } + c <- s; +} + +func d(t T) { + s := 0; + for i := 0; i < len(t); i++ { + s += t[i]; + } + if s != len(t) { + panicln("bad defer", s); + } +} + +var c = make(chan int); +var t T; + +func recur(n int) { + go g(c, t); + s := <-c; + if s != len(t) { + panicln("bad go", s); + } + if n > 0 { + recur(n-1); + } + defer d(t); +} + +func main() { + for i := 0; i < len(t); i++ { + t[i] = 1; + } + recur(10000); +}