// Use of this source code is governed by a BSD-style// license that can be found in the LICENSE file.packagemainimport"strings"funcinit(){register("stringconcat",stringconcat)}funcstringconcat(){s0:=strings.Repeat("0",1<<10)s1:=strings.Repeat("1",1<<10)s2:=strings.Repeat("2",1<<10)s3:=strings.Repeat("3",1<<10)s:=s0+s1+s2+s3panic(s)}