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