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author | Russ Cox <rsc@golang.org> | 2009-01-28 16:58:48 -0800 |
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committer | Russ Cox <rsc@golang.org> | 2009-01-28 16:58:48 -0800 |
commit | 6ee6d6ec55efac70555e49728902ff0c10630b8f (patch) | |
tree | f417c99bcbe6810cbcba9db3e9112b8969a0c9ff /test/stack.go | |
parent | 282bf8cc8c36ebbf02c1ee524daff2ef12b531f1 (diff) | |
download | go-6ee6d6ec55efac70555e49728902ff0c10630b8f.tar.gz go-6ee6d6ec55efac70555e49728902ff0c10630b8f.zip |
add stack test
R=r
DELTA=48 (48 added, 0 deleted, 0 changed)
OCL=23715
CL=23732
Diffstat (limited to 'test/stack.go')
-rw-r--r-- | test/stack.go | 52 |
1 files changed, 52 insertions, 0 deletions
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); +} |