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https://github.com/golang/go
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1a3ee6794c
Not recording the address being taken was causing
the liveness analysis not to preserve x in the absence
of direct references to x, which in turn was making the
net test fail with GOGC=0.
In addition to the test, this fixes a bug wherein
GOGC=0 go test -short net
crashed if liveness analysis was in use (like at tip, not like Go 1.2).
TBR=ken2
CC=golang-codereviews
https://golang.org/cl/64470043
37 lines
681 B
Go
37 lines
681 B
Go
// run
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// Copyright 2014 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 for a garbage collection bug involving not
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// marking x as having its address taken by &x[0]
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// when x is an array value.
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package main
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import (
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"bytes"
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"fmt"
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"runtime"
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)
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func main() {
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var x = [4]struct{ x, y interface{} }{
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{"a", "b"},
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{"c", "d"},
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{"e", "f"},
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{"g", "h"},
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}
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var buf bytes.Buffer
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for _, z := range x {
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runtime.GC()
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fmt.Fprintf(&buf, "%s %s ", z.x.(string), z.y.(string))
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}
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if buf.String() != "a b c d e f g h " {
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println("BUG wrong output\n", buf.String())
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}
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}
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