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https://github.com/golang/go
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24 lines
622 B
Go
24 lines
622 B
Go
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// run
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// Copyright 2015 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 11987. The ppc64 SRADCC instruction was misassembled in a way
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// lost bit 5 of the immediate so v>>32 was assembled as v>>0. SRADCC
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// is only ever inserted by peep so it's hard to be sure when it will
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// be used. This formulation worked when the bug was fixed.
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package main
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import "fmt"
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var v int64 = 0x80000000
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func main() {
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s := fmt.Sprintf("%v", v>>32 == 0)
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if s != "true" {
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fmt.Printf("BUG: v>>32 == 0 evaluated as %q\n", s)
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}
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}
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