mirror of
https://github.com/golang/go
synced 2024-11-22 16:25:07 -07:00
47 lines
765 B
Go
47 lines
765 B
Go
|
// run
|
||
|
|
|
||
|
|
// Copyright 2021 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.
|
||
|
|
|
||
|
|
// Bug: in (*bb).d, the value to be returned was not allocated to
|
||
|
|
// a register that satisfies its register mask.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
type bb struct {
|
||
|
|
r float64
|
||
|
|
x []float64
|
||
|
|
}
|
||
|
|
|
||
|
|
//go:noinline
|
||
|
|
func B(r float64, x []float64) I {
|
||
|
|
return bb{r, x}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b bb) d() (int, int) {
|
||
|
|
if b.r == 0 {
|
||
|
|
return 0, len(b.x)
|
||
|
|
}
|
||
|
|
return len(b.x), len(b.x)
|
||
|
|
}
|
||
|
|
|
||
|
|
type I interface { d() (int, int) }
|
||
|
|
|
||
|
|
func D(r I) (int, int) { return r.d() }
|
||
|
|
|
||
|
|
//go:noinline
|
||
|
|
func F() (int, int) {
|
||
|
|
r := float64(1)
|
||
|
|
x := []float64{0, 1, 2}
|
||
|
|
b := B(r, x)
|
||
|
|
return D(b)
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
x, y := F()
|
||
|
|
if x != 3 || y != 3 {
|
||
|
|
panic("FAIL")
|
||
|
|
}
|
||
|
|
}
|