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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <string>
     11 
     12 // basic_string<charT,traits,Allocator>&
     13 //   replace(size_type pos1, size_type n1, const basic_string<charT,traits,Allocator>& str);
     14 
     15 #include <string>
     16 #include <stdexcept>
     17 #include <algorithm>
     18 #include <cassert>
     19 
     20 #include "min_allocator.h"
     21 
     22 template <class S>
     23 void
     24 test(S s, typename S::size_type pos1, typename S::size_type n1, S str, S expected)
     25 {
     26     typename S::size_type old_size = s.size();
     27     S s0 = s;
     28     try
     29     {
     30         s.replace(pos1, n1, str);
     31         assert(s.__invariants());
     32         assert(pos1 <= old_size);
     33         assert(s == expected);
     34         typename S::size_type xlen = std::min(n1, old_size - pos1);
     35         typename S::size_type rlen = str.size();
     36         assert(s.size() == old_size - xlen + rlen);
     37     }
     38     catch (std::out_of_range&)
     39     {
     40         assert(pos1 > old_size);
     41         assert(s == s0);
     42     }
     43 }
     44 
     45 template <class S>
     46 void test0()
     47 {
     48     test(S(""), 0, 0, S(""), S(""));
     49     test(S(""), 0, 0, S("12345"), S("12345"));
     50     test(S(""), 0, 0, S("1234567890"), S("1234567890"));
     51     test(S(""), 0, 0, S("12345678901234567890"), S("12345678901234567890"));
     52     test(S(""), 0, 1, S(""), S(""));
     53     test(S(""), 0, 1, S("12345"), S("12345"));
     54     test(S(""), 0, 1, S("1234567890"), S("1234567890"));
     55     test(S(""), 0, 1, S("12345678901234567890"), S("12345678901234567890"));
     56     test(S(""), 1, 0, S(""), S("can't happen"));
     57     test(S(""), 1, 0, S("12345"), S("can't happen"));
     58     test(S(""), 1, 0, S("1234567890"), S("can't happen"));
     59     test(S(""), 1, 0, S("12345678901234567890"), S("can't happen"));
     60     test(S("abcde"), 0, 0, S(""), S("abcde"));
     61     test(S("abcde"), 0, 0, S("12345"), S("12345abcde"));
     62     test(S("abcde"), 0, 0, S("1234567890"), S("1234567890abcde"));
     63     test(S("abcde"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcde"));
     64     test(S("abcde"), 0, 1, S(""), S("bcde"));
     65     test(S("abcde"), 0, 1, S("12345"), S("12345bcde"));
     66     test(S("abcde"), 0, 1, S("1234567890"), S("1234567890bcde"));
     67     test(S("abcde"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcde"));
     68     test(S("abcde"), 0, 2, S(""), S("cde"));
     69     test(S("abcde"), 0, 2, S("12345"), S("12345cde"));
     70     test(S("abcde"), 0, 2, S("1234567890"), S("1234567890cde"));
     71     test(S("abcde"), 0, 2, S("12345678901234567890"), S("12345678901234567890cde"));
     72     test(S("abcde"), 0, 4, S(""), S("e"));
     73     test(S("abcde"), 0, 4, S("12345"), S("12345e"));
     74     test(S("abcde"), 0, 4, S("1234567890"), S("1234567890e"));
     75     test(S("abcde"), 0, 4, S("12345678901234567890"), S("12345678901234567890e"));
     76     test(S("abcde"), 0, 5, S(""), S(""));
     77     test(S("abcde"), 0, 5, S("12345"), S("12345"));
     78     test(S("abcde"), 0, 5, S("1234567890"), S("1234567890"));
     79     test(S("abcde"), 0, 5, S("12345678901234567890"), S("12345678901234567890"));
     80     test(S("abcde"), 0, 6, S(""), S(""));
     81     test(S("abcde"), 0, 6, S("12345"), S("12345"));
     82     test(S("abcde"), 0, 6, S("1234567890"), S("1234567890"));
     83     test(S("abcde"), 0, 6, S("12345678901234567890"), S("12345678901234567890"));
     84     test(S("abcde"), 1, 0, S(""), S("abcde"));
     85     test(S("abcde"), 1, 0, S("12345"), S("a12345bcde"));
     86     test(S("abcde"), 1, 0, S("1234567890"), S("a1234567890bcde"));
     87     test(S("abcde"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcde"));
     88     test(S("abcde"), 1, 1, S(""), S("acde"));
     89     test(S("abcde"), 1, 1, S("12345"), S("a12345cde"));
     90     test(S("abcde"), 1, 1, S("1234567890"), S("a1234567890cde"));
     91     test(S("abcde"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cde"));
     92     test(S("abcde"), 1, 2, S(""), S("ade"));
     93     test(S("abcde"), 1, 2, S("12345"), S("a12345de"));
     94     test(S("abcde"), 1, 2, S("1234567890"), S("a1234567890de"));
     95     test(S("abcde"), 1, 2, S("12345678901234567890"), S("a12345678901234567890de"));
     96     test(S("abcde"), 1, 3, S(""), S("ae"));
     97     test(S("abcde"), 1, 3, S("12345"), S("a12345e"));
     98     test(S("abcde"), 1, 3, S("1234567890"), S("a1234567890e"));
     99     test(S("abcde"), 1, 3, S("12345678901234567890"), S("a12345678901234567890e"));
    100     test(S("abcde"), 1, 4, S(""), S("a"));
    101     test(S("abcde"), 1, 4, S("12345"), S("a12345"));
    102     test(S("abcde"), 1, 4, S("1234567890"), S("a1234567890"));
    103     test(S("abcde"), 1, 4, S("12345678901234567890"), S("a12345678901234567890"));
    104     test(S("abcde"), 1, 5, S(""), S("a"));
    105     test(S("abcde"), 1, 5, S("12345"), S("a12345"));
    106     test(S("abcde"), 1, 5, S("1234567890"), S("a1234567890"));
    107     test(S("abcde"), 1, 5, S("12345678901234567890"), S("a12345678901234567890"));
    108     test(S("abcde"), 2, 0, S(""), S("abcde"));
    109     test(S("abcde"), 2, 0, S("12345"), S("ab12345cde"));
    110     test(S("abcde"), 2, 0, S("1234567890"), S("ab1234567890cde"));
    111     test(S("abcde"), 2, 0, S("12345678901234567890"), S("ab12345678901234567890cde"));
    112     test(S("abcde"), 2, 1, S(""), S("abde"));
    113     test(S("abcde"), 2, 1, S("12345"), S("ab12345de"));
    114     test(S("abcde"), 2, 1, S("1234567890"), S("ab1234567890de"));
    115     test(S("abcde"), 2, 1, S("12345678901234567890"), S("ab12345678901234567890de"));
    116     test(S("abcde"), 2, 2, S(""), S("abe"));
    117     test(S("abcde"), 2, 2, S("12345"), S("ab12345e"));
    118     test(S("abcde"), 2, 2, S("1234567890"), S("ab1234567890e"));
    119     test(S("abcde"), 2, 2, S("12345678901234567890"), S("ab12345678901234567890e"));
    120     test(S("abcde"), 2, 3, S(""), S("ab"));
    121     test(S("abcde"), 2, 3, S("12345"), S("ab12345"));
    122     test(S("abcde"), 2, 3, S("1234567890"), S("ab1234567890"));
    123     test(S("abcde"), 2, 3, S("12345678901234567890"), S("ab12345678901234567890"));
    124     test(S("abcde"), 2, 4, S(""), S("ab"));
    125     test(S("abcde"), 2, 4, S("12345"), S("ab12345"));
    126     test(S("abcde"), 2, 4, S("1234567890"), S("ab1234567890"));
    127     test(S("abcde"), 2, 4, S("12345678901234567890"), S("ab12345678901234567890"));
    128     test(S("abcde"), 4, 0, S(""), S("abcde"));
    129     test(S("abcde"), 4, 0, S("12345"), S("abcd12345e"));
    130     test(S("abcde"), 4, 0, S("1234567890"), S("abcd1234567890e"));
    131     test(S("abcde"), 4, 0, S("12345678901234567890"), S("abcd12345678901234567890e"));
    132     test(S("abcde"), 4, 1, S(""), S("abcd"));
    133     test(S("abcde"), 4, 1, S("12345"), S("abcd12345"));
    134     test(S("abcde"), 4, 1, S("1234567890"), S("abcd1234567890"));
    135     test(S("abcde"), 4, 1, S("12345678901234567890"), S("abcd12345678901234567890"));
    136     test(S("abcde"), 4, 2, S(""), S("abcd"));
    137     test(S("abcde"), 4, 2, S("12345"), S("abcd12345"));
    138     test(S("abcde"), 4, 2, S("1234567890"), S("abcd1234567890"));
    139     test(S("abcde"), 4, 2, S("12345678901234567890"), S("abcd12345678901234567890"));
    140     test(S("abcde"), 5, 0, S(""), S("abcde"));
    141     test(S("abcde"), 5, 0, S("12345"), S("abcde12345"));
    142     test(S("abcde"), 5, 0, S("1234567890"), S("abcde1234567890"));
    143     test(S("abcde"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890"));
    144     test(S("abcde"), 5, 1, S(""), S("abcde"));
    145     test(S("abcde"), 5, 1, S("12345"), S("abcde12345"));
    146     test(S("abcde"), 5, 1, S("1234567890"), S("abcde1234567890"));
    147     test(S("abcde"), 5, 1, S("12345678901234567890"), S("abcde12345678901234567890"));
    148 }
    149 
    150 template <class S>
    151 void test1()
    152 {
    153     test(S("abcde"), 6, 0, S(""), S("can't happen"));
    154     test(S("abcde"), 6, 0, S("12345"), S("can't happen"));
    155     test(S("abcde"), 6, 0, S("1234567890"), S("can't happen"));
    156     test(S("abcde"), 6, 0, S("12345678901234567890"), S("can't happen"));
    157     test(S("abcdefghij"), 0, 0, S(""), S("abcdefghij"));
    158     test(S("abcdefghij"), 0, 0, S("12345"), S("12345abcdefghij"));
    159     test(S("abcdefghij"), 0, 0, S("1234567890"), S("1234567890abcdefghij"));
    160     test(S("abcdefghij"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
    161     test(S("abcdefghij"), 0, 1, S(""), S("bcdefghij"));
    162     test(S("abcdefghij"), 0, 1, S("12345"), S("12345bcdefghij"));
    163     test(S("abcdefghij"), 0, 1, S("1234567890"), S("1234567890bcdefghij"));
    164     test(S("abcdefghij"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghij"));
    165     test(S("abcdefghij"), 0, 5, S(""), S("fghij"));
    166     test(S("abcdefghij"), 0, 5, S("12345"), S("12345fghij"));
    167     test(S("abcdefghij"), 0, 5, S("1234567890"), S("1234567890fghij"));
    168     test(S("abcdefghij"), 0, 5, S("12345678901234567890"), S("12345678901234567890fghij"));
    169     test(S("abcdefghij"), 0, 9, S(""), S("j"));
    170     test(S("abcdefghij"), 0, 9, S("12345"), S("12345j"));
    171     test(S("abcdefghij"), 0, 9, S("1234567890"), S("1234567890j"));
    172     test(S("abcdefghij"), 0, 9, S("12345678901234567890"), S("12345678901234567890j"));
    173     test(S("abcdefghij"), 0, 10, S(""), S(""));
    174     test(S("abcdefghij"), 0, 10, S("12345"), S("12345"));
    175     test(S("abcdefghij"), 0, 10, S("1234567890"), S("1234567890"));
    176     test(S("abcdefghij"), 0, 10, S("12345678901234567890"), S("12345678901234567890"));
    177     test(S("abcdefghij"), 0, 11, S(""), S(""));
    178     test(S("abcdefghij"), 0, 11, S("12345"), S("12345"));
    179     test(S("abcdefghij"), 0, 11, S("1234567890"), S("1234567890"));
    180     test(S("abcdefghij"), 0, 11, S("12345678901234567890"), S("12345678901234567890"));
    181     test(S("abcdefghij"), 1, 0, S(""), S("abcdefghij"));
    182     test(S("abcdefghij"), 1, 0, S("12345"), S("a12345bcdefghij"));
    183     test(S("abcdefghij"), 1, 0, S("1234567890"), S("a1234567890bcdefghij"));
    184     test(S("abcdefghij"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
    185     test(S("abcdefghij"), 1, 1, S(""), S("acdefghij"));
    186     test(S("abcdefghij"), 1, 1, S("12345"), S("a12345cdefghij"));
    187     test(S("abcdefghij"), 1, 1, S("1234567890"), S("a1234567890cdefghij"));
    188     test(S("abcdefghij"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghij"));
    189     test(S("abcdefghij"), 1, 4, S(""), S("afghij"));
    190     test(S("abcdefghij"), 1, 4, S("12345"), S("a12345fghij"));
    191     test(S("abcdefghij"), 1, 4, S("1234567890"), S("a1234567890fghij"));
    192     test(S("abcdefghij"), 1, 4, S("12345678901234567890"), S("a12345678901234567890fghij"));
    193     test(S("abcdefghij"), 1, 8, S(""), S("aj"));
    194     test(S("abcdefghij"), 1, 8, S("12345"), S("a12345j"));
    195     test(S("abcdefghij"), 1, 8, S("1234567890"), S("a1234567890j"));
    196     test(S("abcdefghij"), 1, 8, S("12345678901234567890"), S("a12345678901234567890j"));
    197     test(S("abcdefghij"), 1, 9, S(""), S("a"));
    198     test(S("abcdefghij"), 1, 9, S("12345"), S("a12345"));
    199     test(S("abcdefghij"), 1, 9, S("1234567890"), S("a1234567890"));
    200     test(S("abcdefghij"), 1, 9, S("12345678901234567890"), S("a12345678901234567890"));
    201     test(S("abcdefghij"), 1, 10, S(""), S("a"));
    202     test(S("abcdefghij"), 1, 10, S("12345"), S("a12345"));
    203     test(S("abcdefghij"), 1, 10, S("1234567890"), S("a1234567890"));
    204     test(S("abcdefghij"), 1, 10, S("12345678901234567890"), S("a12345678901234567890"));
    205     test(S("abcdefghij"), 5, 0, S(""), S("abcdefghij"));
    206     test(S("abcdefghij"), 5, 0, S("12345"), S("abcde12345fghij"));
    207     test(S("abcdefghij"), 5, 0, S("1234567890"), S("abcde1234567890fghij"));
    208     test(S("abcdefghij"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
    209     test(S("abcdefghij"), 5, 1, S(""), S("abcdeghij"));
    210     test(S("abcdefghij"), 5, 1, S("12345"), S("abcde12345ghij"));
    211     test(S("abcdefghij"), 5, 1, S("1234567890"), S("abcde1234567890ghij"));
    212     test(S("abcdefghij"), 5, 1, S("12345678901234567890"), S("abcde12345678901234567890ghij"));
    213     test(S("abcdefghij"), 5, 2, S(""), S("abcdehij"));
    214     test(S("abcdefghij"), 5, 2, S("12345"), S("abcde12345hij"));
    215     test(S("abcdefghij"), 5, 2, S("1234567890"), S("abcde1234567890hij"));
    216     test(S("abcdefghij"), 5, 2, S("12345678901234567890"), S("abcde12345678901234567890hij"));
    217     test(S("abcdefghij"), 5, 4, S(""), S("abcdej"));
    218     test(S("abcdefghij"), 5, 4, S("12345"), S("abcde12345j"));
    219     test(S("abcdefghij"), 5, 4, S("1234567890"), S("abcde1234567890j"));
    220     test(S("abcdefghij"), 5, 4, S("12345678901234567890"), S("abcde12345678901234567890j"));
    221     test(S("abcdefghij"), 5, 5, S(""), S("abcde"));
    222     test(S("abcdefghij"), 5, 5, S("12345"), S("abcde12345"));
    223     test(S("abcdefghij"), 5, 5, S("1234567890"), S("abcde1234567890"));
    224     test(S("abcdefghij"), 5, 5, S("12345678901234567890"), S("abcde12345678901234567890"));
    225     test(S("abcdefghij"), 5, 6, S(""), S("abcde"));
    226     test(S("abcdefghij"), 5, 6, S("12345"), S("abcde12345"));
    227     test(S("abcdefghij"), 5, 6, S("1234567890"), S("abcde1234567890"));
    228     test(S("abcdefghij"), 5, 6, S("12345678901234567890"), S("abcde12345678901234567890"));
    229     test(S("abcdefghij"), 9, 0, S(""), S("abcdefghij"));
    230     test(S("abcdefghij"), 9, 0, S("12345"), S("abcdefghi12345j"));
    231     test(S("abcdefghij"), 9, 0, S("1234567890"), S("abcdefghi1234567890j"));
    232     test(S("abcdefghij"), 9, 0, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
    233     test(S("abcdefghij"), 9, 1, S(""), S("abcdefghi"));
    234     test(S("abcdefghij"), 9, 1, S("12345"), S("abcdefghi12345"));
    235     test(S("abcdefghij"), 9, 1, S("1234567890"), S("abcdefghi1234567890"));
    236     test(S("abcdefghij"), 9, 1, S("12345678901234567890"), S("abcdefghi12345678901234567890"));
    237     test(S("abcdefghij"), 9, 2, S(""), S("abcdefghi"));
    238     test(S("abcdefghij"), 9, 2, S("12345"), S("abcdefghi12345"));
    239     test(S("abcdefghij"), 9, 2, S("1234567890"), S("abcdefghi1234567890"));
    240     test(S("abcdefghij"), 9, 2, S("12345678901234567890"), S("abcdefghi12345678901234567890"));
    241     test(S("abcdefghij"), 10, 0, S(""), S("abcdefghij"));
    242     test(S("abcdefghij"), 10, 0, S("12345"), S("abcdefghij12345"));
    243     test(S("abcdefghij"), 10, 0, S("1234567890"), S("abcdefghij1234567890"));
    244     test(S("abcdefghij"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
    245     test(S("abcdefghij"), 10, 1, S(""), S("abcdefghij"));
    246     test(S("abcdefghij"), 10, 1, S("12345"), S("abcdefghij12345"));
    247     test(S("abcdefghij"), 10, 1, S("1234567890"), S("abcdefghij1234567890"));
    248     test(S("abcdefghij"), 10, 1, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
    249     test(S("abcdefghij"), 11, 0, S(""), S("can't happen"));
    250     test(S("abcdefghij"), 11, 0, S("12345"), S("can't happen"));
    251     test(S("abcdefghij"), 11, 0, S("1234567890"), S("can't happen"));
    252     test(S("abcdefghij"), 11, 0, S("12345678901234567890"), S("can't happen"));
    253 }
    254 
    255 template <class S>
    256 void test2()
    257 {
    258     test(S("abcdefghijklmnopqrst"), 0, 0, S(""), S("abcdefghijklmnopqrst"));
    259     test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), S("12345abcdefghijklmnopqrst"));
    260     test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
    261     test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
    262     test(S("abcdefghijklmnopqrst"), 0, 1, S(""), S("bcdefghijklmnopqrst"));
    263     test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), S("12345bcdefghijklmnopqrst"));
    264     test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), S("1234567890bcdefghijklmnopqrst"));
    265     test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghijklmnopqrst"));
    266     test(S("abcdefghijklmnopqrst"), 0, 10, S(""), S("klmnopqrst"));
    267     test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), S("12345klmnopqrst"));
    268     test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), S("1234567890klmnopqrst"));
    269     test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), S("12345678901234567890klmnopqrst"));
    270     test(S("abcdefghijklmnopqrst"), 0, 19, S(""), S("t"));
    271     test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), S("12345t"));
    272     test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), S("1234567890t"));
    273     test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), S("12345678901234567890t"));
    274     test(S("abcdefghijklmnopqrst"), 0, 20, S(""), S(""));
    275     test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), S("12345"));
    276     test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), S("1234567890"));
    277     test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), S("12345678901234567890"));
    278     test(S("abcdefghijklmnopqrst"), 0, 21, S(""), S(""));
    279     test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), S("12345"));
    280     test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), S("1234567890"));
    281     test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), S("12345678901234567890"));
    282     test(S("abcdefghijklmnopqrst"), 1, 0, S(""), S("abcdefghijklmnopqrst"));
    283     test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), S("a12345bcdefghijklmnopqrst"));
    284     test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
    285     test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
    286     test(S("abcdefghijklmnopqrst"), 1, 1, S(""), S("acdefghijklmnopqrst"));
    287     test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), S("a12345cdefghijklmnopqrst"));
    288     test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), S("a1234567890cdefghijklmnopqrst"));
    289     test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghijklmnopqrst"));
    290     test(S("abcdefghijklmnopqrst"), 1, 9, S(""), S("aklmnopqrst"));
    291     test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), S("a12345klmnopqrst"));
    292     test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), S("a1234567890klmnopqrst"));
    293     test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), S("a12345678901234567890klmnopqrst"));
    294     test(S("abcdefghijklmnopqrst"), 1, 18, S(""), S("at"));
    295     test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), S("a12345t"));
    296     test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), S("a1234567890t"));
    297     test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), S("a12345678901234567890t"));
    298     test(S("abcdefghijklmnopqrst"), 1, 19, S(""), S("a"));
    299     test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), S("a12345"));
    300     test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), S("a1234567890"));
    301     test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), S("a12345678901234567890"));
    302     test(S("abcdefghijklmnopqrst"), 1, 20, S(""), S("a"));
    303     test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), S("a12345"));
    304     test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), S("a1234567890"));
    305     test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), S("a12345678901234567890"));
    306     test(S("abcdefghijklmnopqrst"), 10, 0, S(""), S("abcdefghijklmnopqrst"));
    307     test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), S("abcdefghij12345klmnopqrst"));
    308     test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
    309     test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
    310     test(S("abcdefghijklmnopqrst"), 10, 1, S(""), S("abcdefghijlmnopqrst"));
    311     test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), S("abcdefghij12345lmnopqrst"));
    312     test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), S("abcdefghij1234567890lmnopqrst"));
    313     test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), S("abcdefghij12345678901234567890lmnopqrst"));
    314     test(S("abcdefghijklmnopqrst"), 10, 5, S(""), S("abcdefghijpqrst"));
    315     test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), S("abcdefghij12345pqrst"));
    316     test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), S("abcdefghij1234567890pqrst"));
    317     test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), S("abcdefghij12345678901234567890pqrst"));
    318     test(S("abcdefghijklmnopqrst"), 10, 9, S(""), S("abcdefghijt"));
    319     test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), S("abcdefghij12345t"));
    320     test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), S("abcdefghij1234567890t"));
    321     test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), S("abcdefghij12345678901234567890t"));
    322     test(S("abcdefghijklmnopqrst"), 10, 10, S(""), S("abcdefghij"));
    323     test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), S("abcdefghij12345"));
    324     test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), S("abcdefghij1234567890"));
    325     test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
    326     test(S("abcdefghijklmnopqrst"), 10, 11, S(""), S("abcdefghij"));
    327     test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), S("abcdefghij12345"));
    328     test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), S("abcdefghij1234567890"));
    329     test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
    330     test(S("abcdefghijklmnopqrst"), 19, 0, S(""), S("abcdefghijklmnopqrst"));
    331     test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), S("abcdefghijklmnopqrs12345t"));
    332     test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
    333     test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
    334     test(S("abcdefghijklmnopqrst"), 19, 1, S(""), S("abcdefghijklmnopqrs"));
    335     test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), S("abcdefghijklmnopqrs12345"));
    336     test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), S("abcdefghijklmnopqrs1234567890"));
    337     test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
    338     test(S("abcdefghijklmnopqrst"), 19, 2, S(""), S("abcdefghijklmnopqrs"));
    339     test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), S("abcdefghijklmnopqrs12345"));
    340     test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), S("abcdefghijklmnopqrs1234567890"));
    341     test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
    342     test(S("abcdefghijklmnopqrst"), 20, 0, S(""), S("abcdefghijklmnopqrst"));
    343     test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), S("abcdefghijklmnopqrst12345"));
    344     test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
    345     test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
    346     test(S("abcdefghijklmnopqrst"), 20, 1, S(""), S("abcdefghijklmnopqrst"));
    347     test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), S("abcdefghijklmnopqrst12345"));
    348     test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
    349     test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
    350     test(S("abcdefghijklmnopqrst"), 21, 0, S(""), S("can't happen"));
    351     test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), S("can't happen"));
    352     test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), S("can't happen"));
    353     test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), S("can't happen"));
    354 }
    355 
    356 int main()
    357 {
    358     {
    359     typedef std::string S;
    360     test0<S>();
    361     test1<S>();
    362     test2<S>();
    363     }
    364 #if __cplusplus >= 201103L
    365     {
    366     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
    367     test0<S>();
    368     test1<S>();
    369     test2<S>();
    370     }
    371 #endif
    372 }
    373