| // run -goexperiment noswissmap |
| |
| // Copyright 2024 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 |
| |
| func nan() float64 { |
| var x, y float64 |
| return x / y |
| } |
| |
| func main() { |
| m := map[float64]int{} |
| |
| // Make a small map with nan keys |
| for i := 0; i < 8; i++ { |
| m[nan()] = i |
| } |
| |
| // Start iterating on it. |
| start := true |
| for _, v := range m { |
| if start { |
| // Add some more elements. |
| for i := 0; i < 10; i++ { |
| m[float64(i)] = i |
| } |
| // Now clear the map. |
| clear(m) |
| start = false |
| } else { |
| // We should never reach here. |
| panic(v) |
| } |
| } |
| } |
