文件操作 - issue27829.go
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文件: /usr/share/go-1.23/test/fixedbugs/issue27829.go
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// run // Copyright 2018 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. // Bad AND/BTR combination rule. package main import "fmt" //go:noinline func f(x uint64) uint64 { return (x >> 48) &^ (uint64(0x4000)) } func main() { bad := false if got, want := f(^uint64(0)), uint64(0xbfff); got != want { fmt.Printf("got %x, want %x\n", got, want) bad = true } if bad { panic("bad") } }
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