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https://github.com/golang/go
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ceb982e004
In the first very rough draft of the reordering code that was introduced in the Go 1.3 cycle, the pre-allocated temporary for a ... argument was held in n->right. It moved to n->alloc but the code avoiding n->right was left behind in order.c. In copy(x, <-c), the receive is in n->right and must be processed. Delete the special case code, removing the bug. Fixes #8039. LGTM=iant R=golang-codereviews, iant CC=golang-codereviews https://golang.org/cl/100820044
24 lines
415 B
Go
24 lines
415 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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// issue 8039. defer copy(x, <-c) did not rewrite <-c properly.
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package main
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func f(s []int) {
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c := make(chan []int, 1)
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c <- []int{1}
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defer copy(s, <-c)
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}
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func main() {
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x := make([]int, 1)
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f(x)
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if x[0] != 1 {
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println("BUG", x[0])
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}
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}
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