| // run |
| |
| // Copyright 2026 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 |
| |
| import "strconv" |
| |
| var sink []int64 |
| |
| //go:noinline |
| func f() int64 { |
| var s []int64 |
| for i := int64(1); i <= 4; i++ { |
| s = append(s, i) |
| } |
| if cap(s) != 4 { |
| return -1 |
| } |
| sum := int64(0) |
| for idx, v := range s { |
| sum = sum*10 + v |
| if idx == 0 { |
| s = s[3:3] |
| s = append(s, 9, 9) |
| } |
| } |
| sink = s |
| return sum |
| } |
| |
| func main() { |
| if got := f(); got != 1234 { |
| panic("unexpected result: " + strconv.Itoa(int(got))) |
| } |
| } |
