package main import ( "runtime" ) func buildString(length int) string { s := "" for i := 0; i < length; i++ { s = s + "x" } return s } func main() { s513 := buildString(513) s1025 := buildString(1025) s4097 := buildString(4097) nested := map[int]string{513: s513, 1025: s1025, 4097: s4097} runtime.Breakpoint() _ = nested }