go bug368 源码
golang bug368 代码
文件路径：/test/fixedbugs/bug368.go
// run
// Copyright 2011 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.
package main
// 5g bug used to set up the 0 for -f() before calling f,
// and the call to f smashed the register.
func f(n int) int {
s := 0
for i := 0; i < n; i++ {
s += i>>1
}
return s
}
func main() {
x := -f(100)
if x != -2450 {
println(x)
panic("broken")
}
}
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