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test: add test case for which gccgo generated incorrect GC info
Change-Id: I5e33db9e63f70706882b85ab124a48509797b05a Reviewed-on: https://go-review.googlesource.com/33790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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test/fixedbugs/bug500.go
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41
test/fixedbugs/bug500.go
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// run
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// Copyright 2016 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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// Gccgo generated incorrect GC info when a global variable was
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// initialized to a slice of a value containing pointers. The initial
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// backing array for the slice was allocated in the .data section,
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// which is fine, but the backing array was not registered as a GC
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// root.
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package main
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import (
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"runtime"
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)
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type s struct {
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str string
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}
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var a = []struct {
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str string
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}{
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{""},
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}
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var b = "b"
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var c = "c"
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func init() {
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a[0].str = b + c
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}
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func main() {
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runtime.GC()
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if a[0].str != b + c {
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panic(a[0].str)
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}
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}
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