map loop count error

[runsys]

package main import ( "encoding/json" "fmt" "io/ioutil" "log" "os" "strings" "time" ) func Is(v I) string { return strconv.FormatInt(int64(v), 10) } func main() { rm := make(map[string]bool, 0) i := 1 rm["0"] = true lcnt := 0 for u, _ := range rm { if i > 1 && u == "0" { panic("error u 0") } j := 0 for ; i < 100000000; i += 1 { j += 1 rm[Is(i)] = true if j > 1000 { break } } lcnt += 1 } fmt.Println("loop count", lcnt) return } result: loop count 6 result: loop count 5

https://walib.run.place:5445/sharedown/02F428E11BF301DA/share/go%20loop%20count%20error.txt

[ALTree]

You're getting random counts because you're adding to the map while iterating over it, which is documented as having unpredictable results.

Closing here as it's not a bug.