| // run | |
| // Copyright 2012 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 3907: out of fixed registers in nested byte multiply. | |
| // Used to happen with both 6g and 8g. | |
| package main | |
| func F(a, b, c, d uint8) uint8 { | |
| return a * (b * (c * (d * | |
| (a * (b * (c * (d * | |
| (a * (b * (c * (d * | |
| a * (b * (c * d))))))))))))) | |
| } | |
| func main() { | |
| var a, b, c, d uint8 = 1, 1, 1, 1 | |
| x := F(a, b, c, d) | |
| if x != 1 { | |
| println(x) | |
| panic("x != 1") | |
| } | |
| } |