|  | // run | 
|  |  | 
|  | // Copyright 2017 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 | 
|  |  | 
|  | var a uint8 | 
|  |  | 
|  | //go:noinline | 
|  | func f() { | 
|  | b := int8(func() int32 { return -1 }()) | 
|  | a = uint8(b) | 
|  | if int32(a) != 255 { | 
|  | // Failing case prints 'got 255 expected 255' | 
|  | println("got", a, "expected 255") | 
|  | } | 
|  | } | 
|  |  | 
|  | //go:noinline | 
|  | func g() { | 
|  | b := int8(func() uint32 { return 0xffffffff }()) | 
|  | a = uint8(b) | 
|  | if int32(a) != 255 { | 
|  | // Failing case prints 'got 255 expected 255' | 
|  | println("got", a, "expected 255") | 
|  | } | 
|  | } | 
|  |  | 
|  | func main() { | 
|  | f() | 
|  | g() | 
|  | } |