OLD | NEW |
(Empty) | |
| 1 // run |
| 2 |
| 3 // Copyright 2012 The Go Authors. All rights reserved. |
| 4 // Use of this source code is governed by a BSD-style |
| 5 // license that can be found in the LICENSE file. |
| 6 |
| 7 // Issue 4518. In some circumstances "return F(...)" |
| 8 // where F has multiple returns is miscompiled by 6g due to |
| 9 // bold assumptions in componentgen. |
| 10 |
| 11 package main |
| 12 |
| 13 func DontInline() {} |
| 14 |
| 15 func F(e interface{}) (int, int) { |
| 16 DontInline() |
| 17 return 3, 7 |
| 18 } |
| 19 |
| 20 func G() (int, int) { |
| 21 DontInline() |
| 22 return 3, 7 |
| 23 } |
| 24 |
| 25 func bogus1(d interface{}) (int, int) { |
| 26 switch { |
| 27 default: |
| 28 return F(d) |
| 29 } |
| 30 return 0, 0 |
| 31 } |
| 32 |
| 33 func bogus2() (int, int) { |
| 34 switch { |
| 35 default: |
| 36 return F(3) |
| 37 } |
| 38 return 0, 0 |
| 39 } |
| 40 |
| 41 func bogus3(d interface{}) (int, int) { |
| 42 switch { |
| 43 default: |
| 44 return G() |
| 45 } |
| 46 return 0, 0 |
| 47 } |
| 48 |
| 49 func bogus4() (int, int) { |
| 50 switch { |
| 51 default: |
| 52 return G() |
| 53 } |
| 54 return 0, 0 |
| 55 } |
| 56 |
| 57 func check(a, b int) { |
| 58 if a != 3 || b != 7 { |
| 59 println(a, b) |
| 60 panic("a != 3 || b != 7") |
| 61 } |
| 62 } |
| 63 |
| 64 func main() { |
| 65 check(bogus1(42)) |
| 66 check(bogus2()) |
| 67 } |
OLD | NEW |