1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 // basic_string<charT,traits,Allocator>&
13 // insert(size_type pos1, const basic_string<charT,traits,Allocator>& str,
14 // size_type pos2, size_type n);
20 #include "min_allocator.h"
24 test(S s, typename S::size_type pos1, S str, typename S::size_type pos2,
25 typename S::size_type n, S expected)
27 typename S::size_type old_size = s.size();
31 s.insert(pos1, str, pos2, n);
32 assert(s.__invariants());
33 assert(pos1 <= old_size && pos2 <= str.size());
34 assert(s == expected);
36 catch (std::out_of_range&)
38 assert(pos1 > old_size || pos2 > str.size());
46 test(S(""), 0, S(""), 0, 0, S(""));
47 test(S(""), 0, S(""), 0, 1, S(""));
48 test(S(""), 0, S(""), 1, 0, S("can't happen"));
49 test(S(""), 0, S("12345"), 0, 0, S(""));
50 test(S(""), 0, S("12345"), 0, 1, S("1"));
51 test(S(""), 0, S("12345"), 0, 2, S("12"));
52 test(S(""), 0, S("12345"), 0, 4, S("1234"));
53 test(S(""), 0, S("12345"), 0, 5, S("12345"));
54 test(S(""), 0, S("12345"), 0, 6, S("12345"));
55 test(S(""), 0, S("12345"), 1, 0, S(""));
56 test(S(""), 0, S("12345"), 1, 1, S("2"));
57 test(S(""), 0, S("12345"), 1, 2, S("23"));
58 test(S(""), 0, S("12345"), 1, 3, S("234"));
59 test(S(""), 0, S("12345"), 1, 4, S("2345"));
60 test(S(""), 0, S("12345"), 1, 5, S("2345"));
61 test(S(""), 0, S("12345"), 2, 0, S(""));
62 test(S(""), 0, S("12345"), 2, 1, S("3"));
63 test(S(""), 0, S("12345"), 2, 2, S("34"));
64 test(S(""), 0, S("12345"), 2, 3, S("345"));
65 test(S(""), 0, S("12345"), 2, 4, S("345"));
66 test(S(""), 0, S("12345"), 4, 0, S(""));
67 test(S(""), 0, S("12345"), 4, 1, S("5"));
68 test(S(""), 0, S("12345"), 4, 2, S("5"));
69 test(S(""), 0, S("12345"), 5, 0, S(""));
70 test(S(""), 0, S("12345"), 5, 1, S(""));
71 test(S(""), 0, S("12345"), 6, 0, S("can't happen"));
72 test(S(""), 0, S("1234567890"), 0, 0, S(""));
73 test(S(""), 0, S("1234567890"), 0, 1, S("1"));
74 test(S(""), 0, S("1234567890"), 0, 5, S("12345"));
75 test(S(""), 0, S("1234567890"), 0, 9, S("123456789"));
76 test(S(""), 0, S("1234567890"), 0, 10, S("1234567890"));
77 test(S(""), 0, S("1234567890"), 0, 11, S("1234567890"));
78 test(S(""), 0, S("1234567890"), 1, 0, S(""));
79 test(S(""), 0, S("1234567890"), 1, 1, S("2"));
80 test(S(""), 0, S("1234567890"), 1, 4, S("2345"));
81 test(S(""), 0, S("1234567890"), 1, 8, S("23456789"));
82 test(S(""), 0, S("1234567890"), 1, 9, S("234567890"));
83 test(S(""), 0, S("1234567890"), 1, 10, S("234567890"));
84 test(S(""), 0, S("1234567890"), 5, 0, S(""));
85 test(S(""), 0, S("1234567890"), 5, 1, S("6"));
86 test(S(""), 0, S("1234567890"), 5, 2, S("67"));
87 test(S(""), 0, S("1234567890"), 5, 4, S("6789"));
88 test(S(""), 0, S("1234567890"), 5, 5, S("67890"));
89 test(S(""), 0, S("1234567890"), 5, 6, S("67890"));
90 test(S(""), 0, S("1234567890"), 9, 0, S(""));
91 test(S(""), 0, S("1234567890"), 9, 1, S("0"));
92 test(S(""), 0, S("1234567890"), 9, 2, S("0"));
93 test(S(""), 0, S("1234567890"), 10, 0, S(""));
94 test(S(""), 0, S("1234567890"), 10, 1, S(""));
95 test(S(""), 0, S("1234567890"), 11, 0, S("can't happen"));
101 test(S(""), 0, S("12345678901234567890"), 0, 0, S(""));
102 test(S(""), 0, S("12345678901234567890"), 0, 1, S("1"));
103 test(S(""), 0, S("12345678901234567890"), 0, 10, S("1234567890"));
104 test(S(""), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
105 test(S(""), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
106 test(S(""), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
107 test(S(""), 0, S("12345678901234567890"), 1, 0, S(""));
108 test(S(""), 0, S("12345678901234567890"), 1, 1, S("2"));
109 test(S(""), 0, S("12345678901234567890"), 1, 9, S("234567890"));
110 test(S(""), 0, S("12345678901234567890"), 1, 18, S("234567890123456789"));
111 test(S(""), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
112 test(S(""), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
113 test(S(""), 0, S("12345678901234567890"), 10, 0, S(""));
114 test(S(""), 0, S("12345678901234567890"), 10, 1, S("1"));
115 test(S(""), 0, S("12345678901234567890"), 10, 5, S("12345"));
116 test(S(""), 0, S("12345678901234567890"), 10, 9, S("123456789"));
117 test(S(""), 0, S("12345678901234567890"), 10, 10, S("1234567890"));
118 test(S(""), 0, S("12345678901234567890"), 10, 11, S("1234567890"));
119 test(S(""), 0, S("12345678901234567890"), 19, 0, S(""));
120 test(S(""), 0, S("12345678901234567890"), 19, 1, S("0"));
121 test(S(""), 0, S("12345678901234567890"), 19, 2, S("0"));
122 test(S(""), 0, S("12345678901234567890"), 20, 0, S(""));
123 test(S(""), 0, S("12345678901234567890"), 20, 1, S(""));
124 test(S(""), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
125 test(S(""), 1, S(""), 0, 0, S("can't happen"));
126 test(S(""), 1, S(""), 0, 1, S("can't happen"));
127 test(S(""), 1, S(""), 1, 0, S("can't happen"));
128 test(S(""), 1, S("12345"), 0, 0, S("can't happen"));
129 test(S(""), 1, S("12345"), 0, 1, S("can't happen"));
130 test(S(""), 1, S("12345"), 0, 2, S("can't happen"));
131 test(S(""), 1, S("12345"), 0, 4, S("can't happen"));
132 test(S(""), 1, S("12345"), 0, 5, S("can't happen"));
133 test(S(""), 1, S("12345"), 0, 6, S("can't happen"));
134 test(S(""), 1, S("12345"), 1, 0, S("can't happen"));
135 test(S(""), 1, S("12345"), 1, 1, S("can't happen"));
136 test(S(""), 1, S("12345"), 1, 2, S("can't happen"));
137 test(S(""), 1, S("12345"), 1, 3, S("can't happen"));
138 test(S(""), 1, S("12345"), 1, 4, S("can't happen"));
139 test(S(""), 1, S("12345"), 1, 5, S("can't happen"));
140 test(S(""), 1, S("12345"), 2, 0, S("can't happen"));
141 test(S(""), 1, S("12345"), 2, 1, S("can't happen"));
142 test(S(""), 1, S("12345"), 2, 2, S("can't happen"));
143 test(S(""), 1, S("12345"), 2, 3, S("can't happen"));
144 test(S(""), 1, S("12345"), 2, 4, S("can't happen"));
145 test(S(""), 1, S("12345"), 4, 0, S("can't happen"));
146 test(S(""), 1, S("12345"), 4, 1, S("can't happen"));
147 test(S(""), 1, S("12345"), 4, 2, S("can't happen"));
148 test(S(""), 1, S("12345"), 5, 0, S("can't happen"));
149 test(S(""), 1, S("12345"), 5, 1, S("can't happen"));
150 test(S(""), 1, S("12345"), 6, 0, S("can't happen"));
156 test(S(""), 1, S("1234567890"), 0, 0, S("can't happen"));
157 test(S(""), 1, S("1234567890"), 0, 1, S("can't happen"));
158 test(S(""), 1, S("1234567890"), 0, 5, S("can't happen"));
159 test(S(""), 1, S("1234567890"), 0, 9, S("can't happen"));
160 test(S(""), 1, S("1234567890"), 0, 10, S("can't happen"));
161 test(S(""), 1, S("1234567890"), 0, 11, S("can't happen"));
162 test(S(""), 1, S("1234567890"), 1, 0, S("can't happen"));
163 test(S(""), 1, S("1234567890"), 1, 1, S("can't happen"));
164 test(S(""), 1, S("1234567890"), 1, 4, S("can't happen"));
165 test(S(""), 1, S("1234567890"), 1, 8, S("can't happen"));
166 test(S(""), 1, S("1234567890"), 1, 9, S("can't happen"));
167 test(S(""), 1, S("1234567890"), 1, 10, S("can't happen"));
168 test(S(""), 1, S("1234567890"), 5, 0, S("can't happen"));
169 test(S(""), 1, S("1234567890"), 5, 1, S("can't happen"));
170 test(S(""), 1, S("1234567890"), 5, 2, S("can't happen"));
171 test(S(""), 1, S("1234567890"), 5, 4, S("can't happen"));
172 test(S(""), 1, S("1234567890"), 5, 5, S("can't happen"));
173 test(S(""), 1, S("1234567890"), 5, 6, S("can't happen"));
174 test(S(""), 1, S("1234567890"), 9, 0, S("can't happen"));
175 test(S(""), 1, S("1234567890"), 9, 1, S("can't happen"));
176 test(S(""), 1, S("1234567890"), 9, 2, S("can't happen"));
177 test(S(""), 1, S("1234567890"), 10, 0, S("can't happen"));
178 test(S(""), 1, S("1234567890"), 10, 1, S("can't happen"));
179 test(S(""), 1, S("1234567890"), 11, 0, S("can't happen"));
180 test(S(""), 1, S("12345678901234567890"), 0, 0, S("can't happen"));
181 test(S(""), 1, S("12345678901234567890"), 0, 1, S("can't happen"));
182 test(S(""), 1, S("12345678901234567890"), 0, 10, S("can't happen"));
183 test(S(""), 1, S("12345678901234567890"), 0, 19, S("can't happen"));
184 test(S(""), 1, S("12345678901234567890"), 0, 20, S("can't happen"));
185 test(S(""), 1, S("12345678901234567890"), 0, 21, S("can't happen"));
186 test(S(""), 1, S("12345678901234567890"), 1, 0, S("can't happen"));
187 test(S(""), 1, S("12345678901234567890"), 1, 1, S("can't happen"));
188 test(S(""), 1, S("12345678901234567890"), 1, 9, S("can't happen"));
189 test(S(""), 1, S("12345678901234567890"), 1, 18, S("can't happen"));
190 test(S(""), 1, S("12345678901234567890"), 1, 19, S("can't happen"));
191 test(S(""), 1, S("12345678901234567890"), 1, 20, S("can't happen"));
192 test(S(""), 1, S("12345678901234567890"), 10, 0, S("can't happen"));
193 test(S(""), 1, S("12345678901234567890"), 10, 1, S("can't happen"));
194 test(S(""), 1, S("12345678901234567890"), 10, 5, S("can't happen"));
195 test(S(""), 1, S("12345678901234567890"), 10, 9, S("can't happen"));
196 test(S(""), 1, S("12345678901234567890"), 10, 10, S("can't happen"));
197 test(S(""), 1, S("12345678901234567890"), 10, 11, S("can't happen"));
198 test(S(""), 1, S("12345678901234567890"), 19, 0, S("can't happen"));
199 test(S(""), 1, S("12345678901234567890"), 19, 1, S("can't happen"));
200 test(S(""), 1, S("12345678901234567890"), 19, 2, S("can't happen"));
201 test(S(""), 1, S("12345678901234567890"), 20, 0, S("can't happen"));
202 test(S(""), 1, S("12345678901234567890"), 20, 1, S("can't happen"));
203 test(S(""), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
204 test(S("abcde"), 0, S(""), 0, 0, S("abcde"));
205 test(S("abcde"), 0, S(""), 0, 1, S("abcde"));
211 test(S("abcde"), 0, S(""), 1, 0, S("can't happen"));
212 test(S("abcde"), 0, S("12345"), 0, 0, S("abcde"));
213 test(S("abcde"), 0, S("12345"), 0, 1, S("1abcde"));
214 test(S("abcde"), 0, S("12345"), 0, 2, S("12abcde"));
215 test(S("abcde"), 0, S("12345"), 0, 4, S("1234abcde"));
216 test(S("abcde"), 0, S("12345"), 0, 5, S("12345abcde"));
217 test(S("abcde"), 0, S("12345"), 0, 6, S("12345abcde"));
218 test(S("abcde"), 0, S("12345"), 1, 0, S("abcde"));
219 test(S("abcde"), 0, S("12345"), 1, 1, S("2abcde"));
220 test(S("abcde"), 0, S("12345"), 1, 2, S("23abcde"));
221 test(S("abcde"), 0, S("12345"), 1, 3, S("234abcde"));
222 test(S("abcde"), 0, S("12345"), 1, 4, S("2345abcde"));
223 test(S("abcde"), 0, S("12345"), 1, 5, S("2345abcde"));
224 test(S("abcde"), 0, S("12345"), 2, 0, S("abcde"));
225 test(S("abcde"), 0, S("12345"), 2, 1, S("3abcde"));
226 test(S("abcde"), 0, S("12345"), 2, 2, S("34abcde"));
227 test(S("abcde"), 0, S("12345"), 2, 3, S("345abcde"));
228 test(S("abcde"), 0, S("12345"), 2, 4, S("345abcde"));
229 test(S("abcde"), 0, S("12345"), 4, 0, S("abcde"));
230 test(S("abcde"), 0, S("12345"), 4, 1, S("5abcde"));
231 test(S("abcde"), 0, S("12345"), 4, 2, S("5abcde"));
232 test(S("abcde"), 0, S("12345"), 5, 0, S("abcde"));
233 test(S("abcde"), 0, S("12345"), 5, 1, S("abcde"));
234 test(S("abcde"), 0, S("12345"), 6, 0, S("can't happen"));
235 test(S("abcde"), 0, S("1234567890"), 0, 0, S("abcde"));
236 test(S("abcde"), 0, S("1234567890"), 0, 1, S("1abcde"));
237 test(S("abcde"), 0, S("1234567890"), 0, 5, S("12345abcde"));
238 test(S("abcde"), 0, S("1234567890"), 0, 9, S("123456789abcde"));
239 test(S("abcde"), 0, S("1234567890"), 0, 10, S("1234567890abcde"));
240 test(S("abcde"), 0, S("1234567890"), 0, 11, S("1234567890abcde"));
241 test(S("abcde"), 0, S("1234567890"), 1, 0, S("abcde"));
242 test(S("abcde"), 0, S("1234567890"), 1, 1, S("2abcde"));
243 test(S("abcde"), 0, S("1234567890"), 1, 4, S("2345abcde"));
244 test(S("abcde"), 0, S("1234567890"), 1, 8, S("23456789abcde"));
245 test(S("abcde"), 0, S("1234567890"), 1, 9, S("234567890abcde"));
246 test(S("abcde"), 0, S("1234567890"), 1, 10, S("234567890abcde"));
247 test(S("abcde"), 0, S("1234567890"), 5, 0, S("abcde"));
248 test(S("abcde"), 0, S("1234567890"), 5, 1, S("6abcde"));
249 test(S("abcde"), 0, S("1234567890"), 5, 2, S("67abcde"));
250 test(S("abcde"), 0, S("1234567890"), 5, 4, S("6789abcde"));
251 test(S("abcde"), 0, S("1234567890"), 5, 5, S("67890abcde"));
252 test(S("abcde"), 0, S("1234567890"), 5, 6, S("67890abcde"));
253 test(S("abcde"), 0, S("1234567890"), 9, 0, S("abcde"));
254 test(S("abcde"), 0, S("1234567890"), 9, 1, S("0abcde"));
255 test(S("abcde"), 0, S("1234567890"), 9, 2, S("0abcde"));
256 test(S("abcde"), 0, S("1234567890"), 10, 0, S("abcde"));
257 test(S("abcde"), 0, S("1234567890"), 10, 1, S("abcde"));
258 test(S("abcde"), 0, S("1234567890"), 11, 0, S("can't happen"));
259 test(S("abcde"), 0, S("12345678901234567890"), 0, 0, S("abcde"));
260 test(S("abcde"), 0, S("12345678901234567890"), 0, 1, S("1abcde"));
266 test(S("abcde"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcde"));
267 test(S("abcde"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcde"));
268 test(S("abcde"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcde"));
269 test(S("abcde"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcde"));
270 test(S("abcde"), 0, S("12345678901234567890"), 1, 0, S("abcde"));
271 test(S("abcde"), 0, S("12345678901234567890"), 1, 1, S("2abcde"));
272 test(S("abcde"), 0, S("12345678901234567890"), 1, 9, S("234567890abcde"));
273 test(S("abcde"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcde"));
274 test(S("abcde"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcde"));
275 test(S("abcde"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcde"));
276 test(S("abcde"), 0, S("12345678901234567890"), 10, 0, S("abcde"));
277 test(S("abcde"), 0, S("12345678901234567890"), 10, 1, S("1abcde"));
278 test(S("abcde"), 0, S("12345678901234567890"), 10, 5, S("12345abcde"));
279 test(S("abcde"), 0, S("12345678901234567890"), 10, 9, S("123456789abcde"));
280 test(S("abcde"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcde"));
281 test(S("abcde"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcde"));
282 test(S("abcde"), 0, S("12345678901234567890"), 19, 0, S("abcde"));
283 test(S("abcde"), 0, S("12345678901234567890"), 19, 1, S("0abcde"));
284 test(S("abcde"), 0, S("12345678901234567890"), 19, 2, S("0abcde"));
285 test(S("abcde"), 0, S("12345678901234567890"), 20, 0, S("abcde"));
286 test(S("abcde"), 0, S("12345678901234567890"), 20, 1, S("abcde"));
287 test(S("abcde"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
288 test(S("abcde"), 1, S(""), 0, 0, S("abcde"));
289 test(S("abcde"), 1, S(""), 0, 1, S("abcde"));
290 test(S("abcde"), 1, S(""), 1, 0, S("can't happen"));
291 test(S("abcde"), 1, S("12345"), 0, 0, S("abcde"));
292 test(S("abcde"), 1, S("12345"), 0, 1, S("a1bcde"));
293 test(S("abcde"), 1, S("12345"), 0, 2, S("a12bcde"));
294 test(S("abcde"), 1, S("12345"), 0, 4, S("a1234bcde"));
295 test(S("abcde"), 1, S("12345"), 0, 5, S("a12345bcde"));
296 test(S("abcde"), 1, S("12345"), 0, 6, S("a12345bcde"));
297 test(S("abcde"), 1, S("12345"), 1, 0, S("abcde"));
298 test(S("abcde"), 1, S("12345"), 1, 1, S("a2bcde"));
299 test(S("abcde"), 1, S("12345"), 1, 2, S("a23bcde"));
300 test(S("abcde"), 1, S("12345"), 1, 3, S("a234bcde"));
301 test(S("abcde"), 1, S("12345"), 1, 4, S("a2345bcde"));
302 test(S("abcde"), 1, S("12345"), 1, 5, S("a2345bcde"));
303 test(S("abcde"), 1, S("12345"), 2, 0, S("abcde"));
304 test(S("abcde"), 1, S("12345"), 2, 1, S("a3bcde"));
305 test(S("abcde"), 1, S("12345"), 2, 2, S("a34bcde"));
306 test(S("abcde"), 1, S("12345"), 2, 3, S("a345bcde"));
307 test(S("abcde"), 1, S("12345"), 2, 4, S("a345bcde"));
308 test(S("abcde"), 1, S("12345"), 4, 0, S("abcde"));
309 test(S("abcde"), 1, S("12345"), 4, 1, S("a5bcde"));
310 test(S("abcde"), 1, S("12345"), 4, 2, S("a5bcde"));
311 test(S("abcde"), 1, S("12345"), 5, 0, S("abcde"));
312 test(S("abcde"), 1, S("12345"), 5, 1, S("abcde"));
313 test(S("abcde"), 1, S("12345"), 6, 0, S("can't happen"));
314 test(S("abcde"), 1, S("1234567890"), 0, 0, S("abcde"));
315 test(S("abcde"), 1, S("1234567890"), 0, 1, S("a1bcde"));
321 test(S("abcde"), 1, S("1234567890"), 0, 5, S("a12345bcde"));
322 test(S("abcde"), 1, S("1234567890"), 0, 9, S("a123456789bcde"));
323 test(S("abcde"), 1, S("1234567890"), 0, 10, S("a1234567890bcde"));
324 test(S("abcde"), 1, S("1234567890"), 0, 11, S("a1234567890bcde"));
325 test(S("abcde"), 1, S("1234567890"), 1, 0, S("abcde"));
326 test(S("abcde"), 1, S("1234567890"), 1, 1, S("a2bcde"));
327 test(S("abcde"), 1, S("1234567890"), 1, 4, S("a2345bcde"));
328 test(S("abcde"), 1, S("1234567890"), 1, 8, S("a23456789bcde"));
329 test(S("abcde"), 1, S("1234567890"), 1, 9, S("a234567890bcde"));
330 test(S("abcde"), 1, S("1234567890"), 1, 10, S("a234567890bcde"));
331 test(S("abcde"), 1, S("1234567890"), 5, 0, S("abcde"));
332 test(S("abcde"), 1, S("1234567890"), 5, 1, S("a6bcde"));
333 test(S("abcde"), 1, S("1234567890"), 5, 2, S("a67bcde"));
334 test(S("abcde"), 1, S("1234567890"), 5, 4, S("a6789bcde"));
335 test(S("abcde"), 1, S("1234567890"), 5, 5, S("a67890bcde"));
336 test(S("abcde"), 1, S("1234567890"), 5, 6, S("a67890bcde"));
337 test(S("abcde"), 1, S("1234567890"), 9, 0, S("abcde"));
338 test(S("abcde"), 1, S("1234567890"), 9, 1, S("a0bcde"));
339 test(S("abcde"), 1, S("1234567890"), 9, 2, S("a0bcde"));
340 test(S("abcde"), 1, S("1234567890"), 10, 0, S("abcde"));
341 test(S("abcde"), 1, S("1234567890"), 10, 1, S("abcde"));
342 test(S("abcde"), 1, S("1234567890"), 11, 0, S("can't happen"));
343 test(S("abcde"), 1, S("12345678901234567890"), 0, 0, S("abcde"));
344 test(S("abcde"), 1, S("12345678901234567890"), 0, 1, S("a1bcde"));
345 test(S("abcde"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcde"));
346 test(S("abcde"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcde"));
347 test(S("abcde"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcde"));
348 test(S("abcde"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcde"));
349 test(S("abcde"), 1, S("12345678901234567890"), 1, 0, S("abcde"));
350 test(S("abcde"), 1, S("12345678901234567890"), 1, 1, S("a2bcde"));
351 test(S("abcde"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcde"));
352 test(S("abcde"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcde"));
353 test(S("abcde"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcde"));
354 test(S("abcde"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcde"));
355 test(S("abcde"), 1, S("12345678901234567890"), 10, 0, S("abcde"));
356 test(S("abcde"), 1, S("12345678901234567890"), 10, 1, S("a1bcde"));
357 test(S("abcde"), 1, S("12345678901234567890"), 10, 5, S("a12345bcde"));
358 test(S("abcde"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcde"));
359 test(S("abcde"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcde"));
360 test(S("abcde"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcde"));
361 test(S("abcde"), 1, S("12345678901234567890"), 19, 0, S("abcde"));
362 test(S("abcde"), 1, S("12345678901234567890"), 19, 1, S("a0bcde"));
363 test(S("abcde"), 1, S("12345678901234567890"), 19, 2, S("a0bcde"));
364 test(S("abcde"), 1, S("12345678901234567890"), 20, 0, S("abcde"));
365 test(S("abcde"), 1, S("12345678901234567890"), 20, 1, S("abcde"));
366 test(S("abcde"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
367 test(S("abcde"), 2, S(""), 0, 0, S("abcde"));
368 test(S("abcde"), 2, S(""), 0, 1, S("abcde"));
369 test(S("abcde"), 2, S(""), 1, 0, S("can't happen"));
370 test(S("abcde"), 2, S("12345"), 0, 0, S("abcde"));
376 test(S("abcde"), 2, S("12345"), 0, 1, S("ab1cde"));
377 test(S("abcde"), 2, S("12345"), 0, 2, S("ab12cde"));
378 test(S("abcde"), 2, S("12345"), 0, 4, S("ab1234cde"));
379 test(S("abcde"), 2, S("12345"), 0, 5, S("ab12345cde"));
380 test(S("abcde"), 2, S("12345"), 0, 6, S("ab12345cde"));
381 test(S("abcde"), 2, S("12345"), 1, 0, S("abcde"));
382 test(S("abcde"), 2, S("12345"), 1, 1, S("ab2cde"));
383 test(S("abcde"), 2, S("12345"), 1, 2, S("ab23cde"));
384 test(S("abcde"), 2, S("12345"), 1, 3, S("ab234cde"));
385 test(S("abcde"), 2, S("12345"), 1, 4, S("ab2345cde"));
386 test(S("abcde"), 2, S("12345"), 1, 5, S("ab2345cde"));
387 test(S("abcde"), 2, S("12345"), 2, 0, S("abcde"));
388 test(S("abcde"), 2, S("12345"), 2, 1, S("ab3cde"));
389 test(S("abcde"), 2, S("12345"), 2, 2, S("ab34cde"));
390 test(S("abcde"), 2, S("12345"), 2, 3, S("ab345cde"));
391 test(S("abcde"), 2, S("12345"), 2, 4, S("ab345cde"));
392 test(S("abcde"), 2, S("12345"), 4, 0, S("abcde"));
393 test(S("abcde"), 2, S("12345"), 4, 1, S("ab5cde"));
394 test(S("abcde"), 2, S("12345"), 4, 2, S("ab5cde"));
395 test(S("abcde"), 2, S("12345"), 5, 0, S("abcde"));
396 test(S("abcde"), 2, S("12345"), 5, 1, S("abcde"));
397 test(S("abcde"), 2, S("12345"), 6, 0, S("can't happen"));
398 test(S("abcde"), 2, S("1234567890"), 0, 0, S("abcde"));
399 test(S("abcde"), 2, S("1234567890"), 0, 1, S("ab1cde"));
400 test(S("abcde"), 2, S("1234567890"), 0, 5, S("ab12345cde"));
401 test(S("abcde"), 2, S("1234567890"), 0, 9, S("ab123456789cde"));
402 test(S("abcde"), 2, S("1234567890"), 0, 10, S("ab1234567890cde"));
403 test(S("abcde"), 2, S("1234567890"), 0, 11, S("ab1234567890cde"));
404 test(S("abcde"), 2, S("1234567890"), 1, 0, S("abcde"));
405 test(S("abcde"), 2, S("1234567890"), 1, 1, S("ab2cde"));
406 test(S("abcde"), 2, S("1234567890"), 1, 4, S("ab2345cde"));
407 test(S("abcde"), 2, S("1234567890"), 1, 8, S("ab23456789cde"));
408 test(S("abcde"), 2, S("1234567890"), 1, 9, S("ab234567890cde"));
409 test(S("abcde"), 2, S("1234567890"), 1, 10, S("ab234567890cde"));
410 test(S("abcde"), 2, S("1234567890"), 5, 0, S("abcde"));
411 test(S("abcde"), 2, S("1234567890"), 5, 1, S("ab6cde"));
412 test(S("abcde"), 2, S("1234567890"), 5, 2, S("ab67cde"));
413 test(S("abcde"), 2, S("1234567890"), 5, 4, S("ab6789cde"));
414 test(S("abcde"), 2, S("1234567890"), 5, 5, S("ab67890cde"));
415 test(S("abcde"), 2, S("1234567890"), 5, 6, S("ab67890cde"));
416 test(S("abcde"), 2, S("1234567890"), 9, 0, S("abcde"));
417 test(S("abcde"), 2, S("1234567890"), 9, 1, S("ab0cde"));
418 test(S("abcde"), 2, S("1234567890"), 9, 2, S("ab0cde"));
419 test(S("abcde"), 2, S("1234567890"), 10, 0, S("abcde"));
420 test(S("abcde"), 2, S("1234567890"), 10, 1, S("abcde"));
421 test(S("abcde"), 2, S("1234567890"), 11, 0, S("can't happen"));
422 test(S("abcde"), 2, S("12345678901234567890"), 0, 0, S("abcde"));
423 test(S("abcde"), 2, S("12345678901234567890"), 0, 1, S("ab1cde"));
424 test(S("abcde"), 2, S("12345678901234567890"), 0, 10, S("ab1234567890cde"));
425 test(S("abcde"), 2, S("12345678901234567890"), 0, 19, S("ab1234567890123456789cde"));
431 test(S("abcde"), 2, S("12345678901234567890"), 0, 20, S("ab12345678901234567890cde"));
432 test(S("abcde"), 2, S("12345678901234567890"), 0, 21, S("ab12345678901234567890cde"));
433 test(S("abcde"), 2, S("12345678901234567890"), 1, 0, S("abcde"));
434 test(S("abcde"), 2, S("12345678901234567890"), 1, 1, S("ab2cde"));
435 test(S("abcde"), 2, S("12345678901234567890"), 1, 9, S("ab234567890cde"));
436 test(S("abcde"), 2, S("12345678901234567890"), 1, 18, S("ab234567890123456789cde"));
437 test(S("abcde"), 2, S("12345678901234567890"), 1, 19, S("ab2345678901234567890cde"));
438 test(S("abcde"), 2, S("12345678901234567890"), 1, 20, S("ab2345678901234567890cde"));
439 test(S("abcde"), 2, S("12345678901234567890"), 10, 0, S("abcde"));
440 test(S("abcde"), 2, S("12345678901234567890"), 10, 1, S("ab1cde"));
441 test(S("abcde"), 2, S("12345678901234567890"), 10, 5, S("ab12345cde"));
442 test(S("abcde"), 2, S("12345678901234567890"), 10, 9, S("ab123456789cde"));
443 test(S("abcde"), 2, S("12345678901234567890"), 10, 10, S("ab1234567890cde"));
444 test(S("abcde"), 2, S("12345678901234567890"), 10, 11, S("ab1234567890cde"));
445 test(S("abcde"), 2, S("12345678901234567890"), 19, 0, S("abcde"));
446 test(S("abcde"), 2, S("12345678901234567890"), 19, 1, S("ab0cde"));
447 test(S("abcde"), 2, S("12345678901234567890"), 19, 2, S("ab0cde"));
448 test(S("abcde"), 2, S("12345678901234567890"), 20, 0, S("abcde"));
449 test(S("abcde"), 2, S("12345678901234567890"), 20, 1, S("abcde"));
450 test(S("abcde"), 2, S("12345678901234567890"), 21, 0, S("can't happen"));
451 test(S("abcde"), 4, S(""), 0, 0, S("abcde"));
452 test(S("abcde"), 4, S(""), 0, 1, S("abcde"));
453 test(S("abcde"), 4, S(""), 1, 0, S("can't happen"));
454 test(S("abcde"), 4, S("12345"), 0, 0, S("abcde"));
455 test(S("abcde"), 4, S("12345"), 0, 1, S("abcd1e"));
456 test(S("abcde"), 4, S("12345"), 0, 2, S("abcd12e"));
457 test(S("abcde"), 4, S("12345"), 0, 4, S("abcd1234e"));
458 test(S("abcde"), 4, S("12345"), 0, 5, S("abcd12345e"));
459 test(S("abcde"), 4, S("12345"), 0, 6, S("abcd12345e"));
460 test(S("abcde"), 4, S("12345"), 1, 0, S("abcde"));
461 test(S("abcde"), 4, S("12345"), 1, 1, S("abcd2e"));
462 test(S("abcde"), 4, S("12345"), 1, 2, S("abcd23e"));
463 test(S("abcde"), 4, S("12345"), 1, 3, S("abcd234e"));
464 test(S("abcde"), 4, S("12345"), 1, 4, S("abcd2345e"));
465 test(S("abcde"), 4, S("12345"), 1, 5, S("abcd2345e"));
466 test(S("abcde"), 4, S("12345"), 2, 0, S("abcde"));
467 test(S("abcde"), 4, S("12345"), 2, 1, S("abcd3e"));
468 test(S("abcde"), 4, S("12345"), 2, 2, S("abcd34e"));
469 test(S("abcde"), 4, S("12345"), 2, 3, S("abcd345e"));
470 test(S("abcde"), 4, S("12345"), 2, 4, S("abcd345e"));
471 test(S("abcde"), 4, S("12345"), 4, 0, S("abcde"));
472 test(S("abcde"), 4, S("12345"), 4, 1, S("abcd5e"));
473 test(S("abcde"), 4, S("12345"), 4, 2, S("abcd5e"));
474 test(S("abcde"), 4, S("12345"), 5, 0, S("abcde"));
475 test(S("abcde"), 4, S("12345"), 5, 1, S("abcde"));
476 test(S("abcde"), 4, S("12345"), 6, 0, S("can't happen"));
477 test(S("abcde"), 4, S("1234567890"), 0, 0, S("abcde"));
478 test(S("abcde"), 4, S("1234567890"), 0, 1, S("abcd1e"));
479 test(S("abcde"), 4, S("1234567890"), 0, 5, S("abcd12345e"));
480 test(S("abcde"), 4, S("1234567890"), 0, 9, S("abcd123456789e"));
486 test(S("abcde"), 4, S("1234567890"), 0, 10, S("abcd1234567890e"));
487 test(S("abcde"), 4, S("1234567890"), 0, 11, S("abcd1234567890e"));
488 test(S("abcde"), 4, S("1234567890"), 1, 0, S("abcde"));
489 test(S("abcde"), 4, S("1234567890"), 1, 1, S("abcd2e"));
490 test(S("abcde"), 4, S("1234567890"), 1, 4, S("abcd2345e"));
491 test(S("abcde"), 4, S("1234567890"), 1, 8, S("abcd23456789e"));
492 test(S("abcde"), 4, S("1234567890"), 1, 9, S("abcd234567890e"));
493 test(S("abcde"), 4, S("1234567890"), 1, 10, S("abcd234567890e"));
494 test(S("abcde"), 4, S("1234567890"), 5, 0, S("abcde"));
495 test(S("abcde"), 4, S("1234567890"), 5, 1, S("abcd6e"));
496 test(S("abcde"), 4, S("1234567890"), 5, 2, S("abcd67e"));
497 test(S("abcde"), 4, S("1234567890"), 5, 4, S("abcd6789e"));
498 test(S("abcde"), 4, S("1234567890"), 5, 5, S("abcd67890e"));
499 test(S("abcde"), 4, S("1234567890"), 5, 6, S("abcd67890e"));
500 test(S("abcde"), 4, S("1234567890"), 9, 0, S("abcde"));
501 test(S("abcde"), 4, S("1234567890"), 9, 1, S("abcd0e"));
502 test(S("abcde"), 4, S("1234567890"), 9, 2, S("abcd0e"));
503 test(S("abcde"), 4, S("1234567890"), 10, 0, S("abcde"));
504 test(S("abcde"), 4, S("1234567890"), 10, 1, S("abcde"));
505 test(S("abcde"), 4, S("1234567890"), 11, 0, S("can't happen"));
506 test(S("abcde"), 4, S("12345678901234567890"), 0, 0, S("abcde"));
507 test(S("abcde"), 4, S("12345678901234567890"), 0, 1, S("abcd1e"));
508 test(S("abcde"), 4, S("12345678901234567890"), 0, 10, S("abcd1234567890e"));
509 test(S("abcde"), 4, S("12345678901234567890"), 0, 19, S("abcd1234567890123456789e"));
510 test(S("abcde"), 4, S("12345678901234567890"), 0, 20, S("abcd12345678901234567890e"));
511 test(S("abcde"), 4, S("12345678901234567890"), 0, 21, S("abcd12345678901234567890e"));
512 test(S("abcde"), 4, S("12345678901234567890"), 1, 0, S("abcde"));
513 test(S("abcde"), 4, S("12345678901234567890"), 1, 1, S("abcd2e"));
514 test(S("abcde"), 4, S("12345678901234567890"), 1, 9, S("abcd234567890e"));
515 test(S("abcde"), 4, S("12345678901234567890"), 1, 18, S("abcd234567890123456789e"));
516 test(S("abcde"), 4, S("12345678901234567890"), 1, 19, S("abcd2345678901234567890e"));
517 test(S("abcde"), 4, S("12345678901234567890"), 1, 20, S("abcd2345678901234567890e"));
518 test(S("abcde"), 4, S("12345678901234567890"), 10, 0, S("abcde"));
519 test(S("abcde"), 4, S("12345678901234567890"), 10, 1, S("abcd1e"));
520 test(S("abcde"), 4, S("12345678901234567890"), 10, 5, S("abcd12345e"));
521 test(S("abcde"), 4, S("12345678901234567890"), 10, 9, S("abcd123456789e"));
522 test(S("abcde"), 4, S("12345678901234567890"), 10, 10, S("abcd1234567890e"));
523 test(S("abcde"), 4, S("12345678901234567890"), 10, 11, S("abcd1234567890e"));
524 test(S("abcde"), 4, S("12345678901234567890"), 19, 0, S("abcde"));
525 test(S("abcde"), 4, S("12345678901234567890"), 19, 1, S("abcd0e"));
526 test(S("abcde"), 4, S("12345678901234567890"), 19, 2, S("abcd0e"));
527 test(S("abcde"), 4, S("12345678901234567890"), 20, 0, S("abcde"));
528 test(S("abcde"), 4, S("12345678901234567890"), 20, 1, S("abcde"));
529 test(S("abcde"), 4, S("12345678901234567890"), 21, 0, S("can't happen"));
530 test(S("abcde"), 5, S(""), 0, 0, S("abcde"));
531 test(S("abcde"), 5, S(""), 0, 1, S("abcde"));
532 test(S("abcde"), 5, S(""), 1, 0, S("can't happen"));
533 test(S("abcde"), 5, S("12345"), 0, 0, S("abcde"));
534 test(S("abcde"), 5, S("12345"), 0, 1, S("abcde1"));
535 test(S("abcde"), 5, S("12345"), 0, 2, S("abcde12"));
541 test(S("abcde"), 5, S("12345"), 0, 4, S("abcde1234"));
542 test(S("abcde"), 5, S("12345"), 0, 5, S("abcde12345"));
543 test(S("abcde"), 5, S("12345"), 0, 6, S("abcde12345"));
544 test(S("abcde"), 5, S("12345"), 1, 0, S("abcde"));
545 test(S("abcde"), 5, S("12345"), 1, 1, S("abcde2"));
546 test(S("abcde"), 5, S("12345"), 1, 2, S("abcde23"));
547 test(S("abcde"), 5, S("12345"), 1, 3, S("abcde234"));
548 test(S("abcde"), 5, S("12345"), 1, 4, S("abcde2345"));
549 test(S("abcde"), 5, S("12345"), 1, 5, S("abcde2345"));
550 test(S("abcde"), 5, S("12345"), 2, 0, S("abcde"));
551 test(S("abcde"), 5, S("12345"), 2, 1, S("abcde3"));
552 test(S("abcde"), 5, S("12345"), 2, 2, S("abcde34"));
553 test(S("abcde"), 5, S("12345"), 2, 3, S("abcde345"));
554 test(S("abcde"), 5, S("12345"), 2, 4, S("abcde345"));
555 test(S("abcde"), 5, S("12345"), 4, 0, S("abcde"));
556 test(S("abcde"), 5, S("12345"), 4, 1, S("abcde5"));
557 test(S("abcde"), 5, S("12345"), 4, 2, S("abcde5"));
558 test(S("abcde"), 5, S("12345"), 5, 0, S("abcde"));
559 test(S("abcde"), 5, S("12345"), 5, 1, S("abcde"));
560 test(S("abcde"), 5, S("12345"), 6, 0, S("can't happen"));
561 test(S("abcde"), 5, S("1234567890"), 0, 0, S("abcde"));
562 test(S("abcde"), 5, S("1234567890"), 0, 1, S("abcde1"));
563 test(S("abcde"), 5, S("1234567890"), 0, 5, S("abcde12345"));
564 test(S("abcde"), 5, S("1234567890"), 0, 9, S("abcde123456789"));
565 test(S("abcde"), 5, S("1234567890"), 0, 10, S("abcde1234567890"));
566 test(S("abcde"), 5, S("1234567890"), 0, 11, S("abcde1234567890"));
567 test(S("abcde"), 5, S("1234567890"), 1, 0, S("abcde"));
568 test(S("abcde"), 5, S("1234567890"), 1, 1, S("abcde2"));
569 test(S("abcde"), 5, S("1234567890"), 1, 4, S("abcde2345"));
570 test(S("abcde"), 5, S("1234567890"), 1, 8, S("abcde23456789"));
571 test(S("abcde"), 5, S("1234567890"), 1, 9, S("abcde234567890"));
572 test(S("abcde"), 5, S("1234567890"), 1, 10, S("abcde234567890"));
573 test(S("abcde"), 5, S("1234567890"), 5, 0, S("abcde"));
574 test(S("abcde"), 5, S("1234567890"), 5, 1, S("abcde6"));
575 test(S("abcde"), 5, S("1234567890"), 5, 2, S("abcde67"));
576 test(S("abcde"), 5, S("1234567890"), 5, 4, S("abcde6789"));
577 test(S("abcde"), 5, S("1234567890"), 5, 5, S("abcde67890"));
578 test(S("abcde"), 5, S("1234567890"), 5, 6, S("abcde67890"));
579 test(S("abcde"), 5, S("1234567890"), 9, 0, S("abcde"));
580 test(S("abcde"), 5, S("1234567890"), 9, 1, S("abcde0"));
581 test(S("abcde"), 5, S("1234567890"), 9, 2, S("abcde0"));
582 test(S("abcde"), 5, S("1234567890"), 10, 0, S("abcde"));
583 test(S("abcde"), 5, S("1234567890"), 10, 1, S("abcde"));
584 test(S("abcde"), 5, S("1234567890"), 11, 0, S("can't happen"));
585 test(S("abcde"), 5, S("12345678901234567890"), 0, 0, S("abcde"));
586 test(S("abcde"), 5, S("12345678901234567890"), 0, 1, S("abcde1"));
587 test(S("abcde"), 5, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
588 test(S("abcde"), 5, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
589 test(S("abcde"), 5, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
590 test(S("abcde"), 5, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
596 test(S("abcde"), 5, S("12345678901234567890"), 1, 0, S("abcde"));
597 test(S("abcde"), 5, S("12345678901234567890"), 1, 1, S("abcde2"));
598 test(S("abcde"), 5, S("12345678901234567890"), 1, 9, S("abcde234567890"));
599 test(S("abcde"), 5, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
600 test(S("abcde"), 5, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
601 test(S("abcde"), 5, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
602 test(S("abcde"), 5, S("12345678901234567890"), 10, 0, S("abcde"));
603 test(S("abcde"), 5, S("12345678901234567890"), 10, 1, S("abcde1"));
604 test(S("abcde"), 5, S("12345678901234567890"), 10, 5, S("abcde12345"));
605 test(S("abcde"), 5, S("12345678901234567890"), 10, 9, S("abcde123456789"));
606 test(S("abcde"), 5, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
607 test(S("abcde"), 5, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
608 test(S("abcde"), 5, S("12345678901234567890"), 19, 0, S("abcde"));
609 test(S("abcde"), 5, S("12345678901234567890"), 19, 1, S("abcde0"));
610 test(S("abcde"), 5, S("12345678901234567890"), 19, 2, S("abcde0"));
611 test(S("abcde"), 5, S("12345678901234567890"), 20, 0, S("abcde"));
612 test(S("abcde"), 5, S("12345678901234567890"), 20, 1, S("abcde"));
613 test(S("abcde"), 5, S("12345678901234567890"), 21, 0, S("can't happen"));
614 test(S("abcde"), 6, S(""), 0, 0, S("can't happen"));
615 test(S("abcde"), 6, S(""), 0, 1, S("can't happen"));
616 test(S("abcde"), 6, S(""), 1, 0, S("can't happen"));
617 test(S("abcde"), 6, S("12345"), 0, 0, S("can't happen"));
618 test(S("abcde"), 6, S("12345"), 0, 1, S("can't happen"));
619 test(S("abcde"), 6, S("12345"), 0, 2, S("can't happen"));
620 test(S("abcde"), 6, S("12345"), 0, 4, S("can't happen"));
621 test(S("abcde"), 6, S("12345"), 0, 5, S("can't happen"));
622 test(S("abcde"), 6, S("12345"), 0, 6, S("can't happen"));
623 test(S("abcde"), 6, S("12345"), 1, 0, S("can't happen"));
624 test(S("abcde"), 6, S("12345"), 1, 1, S("can't happen"));
625 test(S("abcde"), 6, S("12345"), 1, 2, S("can't happen"));
626 test(S("abcde"), 6, S("12345"), 1, 3, S("can't happen"));
627 test(S("abcde"), 6, S("12345"), 1, 4, S("can't happen"));
628 test(S("abcde"), 6, S("12345"), 1, 5, S("can't happen"));
629 test(S("abcde"), 6, S("12345"), 2, 0, S("can't happen"));
630 test(S("abcde"), 6, S("12345"), 2, 1, S("can't happen"));
631 test(S("abcde"), 6, S("12345"), 2, 2, S("can't happen"));
632 test(S("abcde"), 6, S("12345"), 2, 3, S("can't happen"));
633 test(S("abcde"), 6, S("12345"), 2, 4, S("can't happen"));
634 test(S("abcde"), 6, S("12345"), 4, 0, S("can't happen"));
635 test(S("abcde"), 6, S("12345"), 4, 1, S("can't happen"));
636 test(S("abcde"), 6, S("12345"), 4, 2, S("can't happen"));
637 test(S("abcde"), 6, S("12345"), 5, 0, S("can't happen"));
638 test(S("abcde"), 6, S("12345"), 5, 1, S("can't happen"));
639 test(S("abcde"), 6, S("12345"), 6, 0, S("can't happen"));
640 test(S("abcde"), 6, S("1234567890"), 0, 0, S("can't happen"));
641 test(S("abcde"), 6, S("1234567890"), 0, 1, S("can't happen"));
642 test(S("abcde"), 6, S("1234567890"), 0, 5, S("can't happen"));
643 test(S("abcde"), 6, S("1234567890"), 0, 9, S("can't happen"));
644 test(S("abcde"), 6, S("1234567890"), 0, 10, S("can't happen"));
645 test(S("abcde"), 6, S("1234567890"), 0, 11, S("can't happen"));
651 test(S("abcde"), 6, S("1234567890"), 1, 0, S("can't happen"));
652 test(S("abcde"), 6, S("1234567890"), 1, 1, S("can't happen"));
653 test(S("abcde"), 6, S("1234567890"), 1, 4, S("can't happen"));
654 test(S("abcde"), 6, S("1234567890"), 1, 8, S("can't happen"));
655 test(S("abcde"), 6, S("1234567890"), 1, 9, S("can't happen"));
656 test(S("abcde"), 6, S("1234567890"), 1, 10, S("can't happen"));
657 test(S("abcde"), 6, S("1234567890"), 5, 0, S("can't happen"));
658 test(S("abcde"), 6, S("1234567890"), 5, 1, S("can't happen"));
659 test(S("abcde"), 6, S("1234567890"), 5, 2, S("can't happen"));
660 test(S("abcde"), 6, S("1234567890"), 5, 4, S("can't happen"));
661 test(S("abcde"), 6, S("1234567890"), 5, 5, S("can't happen"));
662 test(S("abcde"), 6, S("1234567890"), 5, 6, S("can't happen"));
663 test(S("abcde"), 6, S("1234567890"), 9, 0, S("can't happen"));
664 test(S("abcde"), 6, S("1234567890"), 9, 1, S("can't happen"));
665 test(S("abcde"), 6, S("1234567890"), 9, 2, S("can't happen"));
666 test(S("abcde"), 6, S("1234567890"), 10, 0, S("can't happen"));
667 test(S("abcde"), 6, S("1234567890"), 10, 1, S("can't happen"));
668 test(S("abcde"), 6, S("1234567890"), 11, 0, S("can't happen"));
669 test(S("abcde"), 6, S("12345678901234567890"), 0, 0, S("can't happen"));
670 test(S("abcde"), 6, S("12345678901234567890"), 0, 1, S("can't happen"));
671 test(S("abcde"), 6, S("12345678901234567890"), 0, 10, S("can't happen"));
672 test(S("abcde"), 6, S("12345678901234567890"), 0, 19, S("can't happen"));
673 test(S("abcde"), 6, S("12345678901234567890"), 0, 20, S("can't happen"));
674 test(S("abcde"), 6, S("12345678901234567890"), 0, 21, S("can't happen"));
675 test(S("abcde"), 6, S("12345678901234567890"), 1, 0, S("can't happen"));
676 test(S("abcde"), 6, S("12345678901234567890"), 1, 1, S("can't happen"));
677 test(S("abcde"), 6, S("12345678901234567890"), 1, 9, S("can't happen"));
678 test(S("abcde"), 6, S("12345678901234567890"), 1, 18, S("can't happen"));
679 test(S("abcde"), 6, S("12345678901234567890"), 1, 19, S("can't happen"));
680 test(S("abcde"), 6, S("12345678901234567890"), 1, 20, S("can't happen"));
681 test(S("abcde"), 6, S("12345678901234567890"), 10, 0, S("can't happen"));
682 test(S("abcde"), 6, S("12345678901234567890"), 10, 1, S("can't happen"));
683 test(S("abcde"), 6, S("12345678901234567890"), 10, 5, S("can't happen"));
684 test(S("abcde"), 6, S("12345678901234567890"), 10, 9, S("can't happen"));
685 test(S("abcde"), 6, S("12345678901234567890"), 10, 10, S("can't happen"));
686 test(S("abcde"), 6, S("12345678901234567890"), 10, 11, S("can't happen"));
687 test(S("abcde"), 6, S("12345678901234567890"), 19, 0, S("can't happen"));
688 test(S("abcde"), 6, S("12345678901234567890"), 19, 1, S("can't happen"));
689 test(S("abcde"), 6, S("12345678901234567890"), 19, 2, S("can't happen"));
690 test(S("abcde"), 6, S("12345678901234567890"), 20, 0, S("can't happen"));
691 test(S("abcde"), 6, S("12345678901234567890"), 20, 1, S("can't happen"));
692 test(S("abcde"), 6, S("12345678901234567890"), 21, 0, S("can't happen"));
693 test(S("abcdefghij"), 0, S(""), 0, 0, S("abcdefghij"));
694 test(S("abcdefghij"), 0, S(""), 0, 1, S("abcdefghij"));
695 test(S("abcdefghij"), 0, S(""), 1, 0, S("can't happen"));
696 test(S("abcdefghij"), 0, S("12345"), 0, 0, S("abcdefghij"));
697 test(S("abcdefghij"), 0, S("12345"), 0, 1, S("1abcdefghij"));
698 test(S("abcdefghij"), 0, S("12345"), 0, 2, S("12abcdefghij"));
699 test(S("abcdefghij"), 0, S("12345"), 0, 4, S("1234abcdefghij"));
700 test(S("abcdefghij"), 0, S("12345"), 0, 5, S("12345abcdefghij"));
706 test(S("abcdefghij"), 0, S("12345"), 0, 6, S("12345abcdefghij"));
707 test(S("abcdefghij"), 0, S("12345"), 1, 0, S("abcdefghij"));
708 test(S("abcdefghij"), 0, S("12345"), 1, 1, S("2abcdefghij"));
709 test(S("abcdefghij"), 0, S("12345"), 1, 2, S("23abcdefghij"));
710 test(S("abcdefghij"), 0, S("12345"), 1, 3, S("234abcdefghij"));
711 test(S("abcdefghij"), 0, S("12345"), 1, 4, S("2345abcdefghij"));
712 test(S("abcdefghij"), 0, S("12345"), 1, 5, S("2345abcdefghij"));
713 test(S("abcdefghij"), 0, S("12345"), 2, 0, S("abcdefghij"));
714 test(S("abcdefghij"), 0, S("12345"), 2, 1, S("3abcdefghij"));
715 test(S("abcdefghij"), 0, S("12345"), 2, 2, S("34abcdefghij"));
716 test(S("abcdefghij"), 0, S("12345"), 2, 3, S("345abcdefghij"));
717 test(S("abcdefghij"), 0, S("12345"), 2, 4, S("345abcdefghij"));
718 test(S("abcdefghij"), 0, S("12345"), 4, 0, S("abcdefghij"));
719 test(S("abcdefghij"), 0, S("12345"), 4, 1, S("5abcdefghij"));
720 test(S("abcdefghij"), 0, S("12345"), 4, 2, S("5abcdefghij"));
721 test(S("abcdefghij"), 0, S("12345"), 5, 0, S("abcdefghij"));
722 test(S("abcdefghij"), 0, S("12345"), 5, 1, S("abcdefghij"));
723 test(S("abcdefghij"), 0, S("12345"), 6, 0, S("can't happen"));
724 test(S("abcdefghij"), 0, S("1234567890"), 0, 0, S("abcdefghij"));
725 test(S("abcdefghij"), 0, S("1234567890"), 0, 1, S("1abcdefghij"));
726 test(S("abcdefghij"), 0, S("1234567890"), 0, 5, S("12345abcdefghij"));
727 test(S("abcdefghij"), 0, S("1234567890"), 0, 9, S("123456789abcdefghij"));
728 test(S("abcdefghij"), 0, S("1234567890"), 0, 10, S("1234567890abcdefghij"));
729 test(S("abcdefghij"), 0, S("1234567890"), 0, 11, S("1234567890abcdefghij"));
730 test(S("abcdefghij"), 0, S("1234567890"), 1, 0, S("abcdefghij"));
731 test(S("abcdefghij"), 0, S("1234567890"), 1, 1, S("2abcdefghij"));
732 test(S("abcdefghij"), 0, S("1234567890"), 1, 4, S("2345abcdefghij"));
733 test(S("abcdefghij"), 0, S("1234567890"), 1, 8, S("23456789abcdefghij"));
734 test(S("abcdefghij"), 0, S("1234567890"), 1, 9, S("234567890abcdefghij"));
735 test(S("abcdefghij"), 0, S("1234567890"), 1, 10, S("234567890abcdefghij"));
736 test(S("abcdefghij"), 0, S("1234567890"), 5, 0, S("abcdefghij"));
737 test(S("abcdefghij"), 0, S("1234567890"), 5, 1, S("6abcdefghij"));
738 test(S("abcdefghij"), 0, S("1234567890"), 5, 2, S("67abcdefghij"));
739 test(S("abcdefghij"), 0, S("1234567890"), 5, 4, S("6789abcdefghij"));
740 test(S("abcdefghij"), 0, S("1234567890"), 5, 5, S("67890abcdefghij"));
741 test(S("abcdefghij"), 0, S("1234567890"), 5, 6, S("67890abcdefghij"));
742 test(S("abcdefghij"), 0, S("1234567890"), 9, 0, S("abcdefghij"));
743 test(S("abcdefghij"), 0, S("1234567890"), 9, 1, S("0abcdefghij"));
744 test(S("abcdefghij"), 0, S("1234567890"), 9, 2, S("0abcdefghij"));
745 test(S("abcdefghij"), 0, S("1234567890"), 10, 0, S("abcdefghij"));
746 test(S("abcdefghij"), 0, S("1234567890"), 10, 1, S("abcdefghij"));
747 test(S("abcdefghij"), 0, S("1234567890"), 11, 0, S("can't happen"));
748 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
749 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 1, S("1abcdefghij"));
750 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghij"));
751 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghij"));
752 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghij"));
753 test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghij"));
754 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
755 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 1, S("2abcdefghij"));
761 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghij"));
762 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghij"));
763 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghij"));
764 test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghij"));
765 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
766 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 1, S("1abcdefghij"));
767 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 5, S("12345abcdefghij"));
768 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghij"));
769 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghij"));
770 test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghij"));
771 test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
772 test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 1, S("0abcdefghij"));
773 test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 2, S("0abcdefghij"));
774 test(S("abcdefghij"), 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
775 test(S("abcdefghij"), 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
776 test(S("abcdefghij"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
777 test(S("abcdefghij"), 1, S(""), 0, 0, S("abcdefghij"));
778 test(S("abcdefghij"), 1, S(""), 0, 1, S("abcdefghij"));
779 test(S("abcdefghij"), 1, S(""), 1, 0, S("can't happen"));
780 test(S("abcdefghij"), 1, S("12345"), 0, 0, S("abcdefghij"));
781 test(S("abcdefghij"), 1, S("12345"), 0, 1, S("a1bcdefghij"));
782 test(S("abcdefghij"), 1, S("12345"), 0, 2, S("a12bcdefghij"));
783 test(S("abcdefghij"), 1, S("12345"), 0, 4, S("a1234bcdefghij"));
784 test(S("abcdefghij"), 1, S("12345"), 0, 5, S("a12345bcdefghij"));
785 test(S("abcdefghij"), 1, S("12345"), 0, 6, S("a12345bcdefghij"));
786 test(S("abcdefghij"), 1, S("12345"), 1, 0, S("abcdefghij"));
787 test(S("abcdefghij"), 1, S("12345"), 1, 1, S("a2bcdefghij"));
788 test(S("abcdefghij"), 1, S("12345"), 1, 2, S("a23bcdefghij"));
789 test(S("abcdefghij"), 1, S("12345"), 1, 3, S("a234bcdefghij"));
790 test(S("abcdefghij"), 1, S("12345"), 1, 4, S("a2345bcdefghij"));
791 test(S("abcdefghij"), 1, S("12345"), 1, 5, S("a2345bcdefghij"));
792 test(S("abcdefghij"), 1, S("12345"), 2, 0, S("abcdefghij"));
793 test(S("abcdefghij"), 1, S("12345"), 2, 1, S("a3bcdefghij"));
794 test(S("abcdefghij"), 1, S("12345"), 2, 2, S("a34bcdefghij"));
795 test(S("abcdefghij"), 1, S("12345"), 2, 3, S("a345bcdefghij"));
796 test(S("abcdefghij"), 1, S("12345"), 2, 4, S("a345bcdefghij"));
797 test(S("abcdefghij"), 1, S("12345"), 4, 0, S("abcdefghij"));
798 test(S("abcdefghij"), 1, S("12345"), 4, 1, S("a5bcdefghij"));
799 test(S("abcdefghij"), 1, S("12345"), 4, 2, S("a5bcdefghij"));
800 test(S("abcdefghij"), 1, S("12345"), 5, 0, S("abcdefghij"));
801 test(S("abcdefghij"), 1, S("12345"), 5, 1, S("abcdefghij"));
802 test(S("abcdefghij"), 1, S("12345"), 6, 0, S("can't happen"));
803 test(S("abcdefghij"), 1, S("1234567890"), 0, 0, S("abcdefghij"));
804 test(S("abcdefghij"), 1, S("1234567890"), 0, 1, S("a1bcdefghij"));
805 test(S("abcdefghij"), 1, S("1234567890"), 0, 5, S("a12345bcdefghij"));
806 test(S("abcdefghij"), 1, S("1234567890"), 0, 9, S("a123456789bcdefghij"));
807 test(S("abcdefghij"), 1, S("1234567890"), 0, 10, S("a1234567890bcdefghij"));
808 test(S("abcdefghij"), 1, S("1234567890"), 0, 11, S("a1234567890bcdefghij"));
809 test(S("abcdefghij"), 1, S("1234567890"), 1, 0, S("abcdefghij"));
810 test(S("abcdefghij"), 1, S("1234567890"), 1, 1, S("a2bcdefghij"));
816 test(S("abcdefghij"), 1, S("1234567890"), 1, 4, S("a2345bcdefghij"));
817 test(S("abcdefghij"), 1, S("1234567890"), 1, 8, S("a23456789bcdefghij"));
818 test(S("abcdefghij"), 1, S("1234567890"), 1, 9, S("a234567890bcdefghij"));
819 test(S("abcdefghij"), 1, S("1234567890"), 1, 10, S("a234567890bcdefghij"));
820 test(S("abcdefghij"), 1, S("1234567890"), 5, 0, S("abcdefghij"));
821 test(S("abcdefghij"), 1, S("1234567890"), 5, 1, S("a6bcdefghij"));
822 test(S("abcdefghij"), 1, S("1234567890"), 5, 2, S("a67bcdefghij"));
823 test(S("abcdefghij"), 1, S("1234567890"), 5, 4, S("a6789bcdefghij"));
824 test(S("abcdefghij"), 1, S("1234567890"), 5, 5, S("a67890bcdefghij"));
825 test(S("abcdefghij"), 1, S("1234567890"), 5, 6, S("a67890bcdefghij"));
826 test(S("abcdefghij"), 1, S("1234567890"), 9, 0, S("abcdefghij"));
827 test(S("abcdefghij"), 1, S("1234567890"), 9, 1, S("a0bcdefghij"));
828 test(S("abcdefghij"), 1, S("1234567890"), 9, 2, S("a0bcdefghij"));
829 test(S("abcdefghij"), 1, S("1234567890"), 10, 0, S("abcdefghij"));
830 test(S("abcdefghij"), 1, S("1234567890"), 10, 1, S("abcdefghij"));
831 test(S("abcdefghij"), 1, S("1234567890"), 11, 0, S("can't happen"));
832 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 0, S("abcdefghij"));
833 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 1, S("a1bcdefghij"));
834 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghij"));
835 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghij"));
836 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghij"));
837 test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghij"));
838 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 0, S("abcdefghij"));
839 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 1, S("a2bcdefghij"));
840 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcdefghij"));
841 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghij"));
842 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghij"));
843 test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghij"));
844 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 0, S("abcdefghij"));
845 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 1, S("a1bcdefghij"));
846 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 5, S("a12345bcdefghij"));
847 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcdefghij"));
848 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghij"));
849 test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghij"));
850 test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 0, S("abcdefghij"));
851 test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 1, S("a0bcdefghij"));
852 test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 2, S("a0bcdefghij"));
853 test(S("abcdefghij"), 1, S("12345678901234567890"), 20, 0, S("abcdefghij"));
854 test(S("abcdefghij"), 1, S("12345678901234567890"), 20, 1, S("abcdefghij"));
855 test(S("abcdefghij"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
856 test(S("abcdefghij"), 5, S(""), 0, 0, S("abcdefghij"));
857 test(S("abcdefghij"), 5, S(""), 0, 1, S("abcdefghij"));
858 test(S("abcdefghij"), 5, S(""), 1, 0, S("can't happen"));
859 test(S("abcdefghij"), 5, S("12345"), 0, 0, S("abcdefghij"));
860 test(S("abcdefghij"), 5, S("12345"), 0, 1, S("abcde1fghij"));
861 test(S("abcdefghij"), 5, S("12345"), 0, 2, S("abcde12fghij"));
862 test(S("abcdefghij"), 5, S("12345"), 0, 4, S("abcde1234fghij"));
863 test(S("abcdefghij"), 5, S("12345"), 0, 5, S("abcde12345fghij"));
864 test(S("abcdefghij"), 5, S("12345"), 0, 6, S("abcde12345fghij"));
865 test(S("abcdefghij"), 5, S("12345"), 1, 0, S("abcdefghij"));
871 test(S("abcdefghij"), 5, S("12345"), 1, 1, S("abcde2fghij"));
872 test(S("abcdefghij"), 5, S("12345"), 1, 2, S("abcde23fghij"));
873 test(S("abcdefghij"), 5, S("12345"), 1, 3, S("abcde234fghij"));
874 test(S("abcdefghij"), 5, S("12345"), 1, 4, S("abcde2345fghij"));
875 test(S("abcdefghij"), 5, S("12345"), 1, 5, S("abcde2345fghij"));
876 test(S("abcdefghij"), 5, S("12345"), 2, 0, S("abcdefghij"));
877 test(S("abcdefghij"), 5, S("12345"), 2, 1, S("abcde3fghij"));
878 test(S("abcdefghij"), 5, S("12345"), 2, 2, S("abcde34fghij"));
879 test(S("abcdefghij"), 5, S("12345"), 2, 3, S("abcde345fghij"));
880 test(S("abcdefghij"), 5, S("12345"), 2, 4, S("abcde345fghij"));
881 test(S("abcdefghij"), 5, S("12345"), 4, 0, S("abcdefghij"));
882 test(S("abcdefghij"), 5, S("12345"), 4, 1, S("abcde5fghij"));
883 test(S("abcdefghij"), 5, S("12345"), 4, 2, S("abcde5fghij"));
884 test(S("abcdefghij"), 5, S("12345"), 5, 0, S("abcdefghij"));
885 test(S("abcdefghij"), 5, S("12345"), 5, 1, S("abcdefghij"));
886 test(S("abcdefghij"), 5, S("12345"), 6, 0, S("can't happen"));
887 test(S("abcdefghij"), 5, S("1234567890"), 0, 0, S("abcdefghij"));
888 test(S("abcdefghij"), 5, S("1234567890"), 0, 1, S("abcde1fghij"));
889 test(S("abcdefghij"), 5, S("1234567890"), 0, 5, S("abcde12345fghij"));
890 test(S("abcdefghij"), 5, S("1234567890"), 0, 9, S("abcde123456789fghij"));
891 test(S("abcdefghij"), 5, S("1234567890"), 0, 10, S("abcde1234567890fghij"));
892 test(S("abcdefghij"), 5, S("1234567890"), 0, 11, S("abcde1234567890fghij"));
893 test(S("abcdefghij"), 5, S("1234567890"), 1, 0, S("abcdefghij"));
894 test(S("abcdefghij"), 5, S("1234567890"), 1, 1, S("abcde2fghij"));
895 test(S("abcdefghij"), 5, S("1234567890"), 1, 4, S("abcde2345fghij"));
896 test(S("abcdefghij"), 5, S("1234567890"), 1, 8, S("abcde23456789fghij"));
897 test(S("abcdefghij"), 5, S("1234567890"), 1, 9, S("abcde234567890fghij"));
898 test(S("abcdefghij"), 5, S("1234567890"), 1, 10, S("abcde234567890fghij"));
899 test(S("abcdefghij"), 5, S("1234567890"), 5, 0, S("abcdefghij"));
900 test(S("abcdefghij"), 5, S("1234567890"), 5, 1, S("abcde6fghij"));
901 test(S("abcdefghij"), 5, S("1234567890"), 5, 2, S("abcde67fghij"));
902 test(S("abcdefghij"), 5, S("1234567890"), 5, 4, S("abcde6789fghij"));
903 test(S("abcdefghij"), 5, S("1234567890"), 5, 5, S("abcde67890fghij"));
904 test(S("abcdefghij"), 5, S("1234567890"), 5, 6, S("abcde67890fghij"));
905 test(S("abcdefghij"), 5, S("1234567890"), 9, 0, S("abcdefghij"));
906 test(S("abcdefghij"), 5, S("1234567890"), 9, 1, S("abcde0fghij"));
907 test(S("abcdefghij"), 5, S("1234567890"), 9, 2, S("abcde0fghij"));
908 test(S("abcdefghij"), 5, S("1234567890"), 10, 0, S("abcdefghij"));
909 test(S("abcdefghij"), 5, S("1234567890"), 10, 1, S("abcdefghij"));
910 test(S("abcdefghij"), 5, S("1234567890"), 11, 0, S("can't happen"));
911 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 0, S("abcdefghij"));
912 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 1, S("abcde1fghij"));
913 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 10, S("abcde1234567890fghij"));
914 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789fghij"));
915 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890fghij"));
916 test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890fghij"));
917 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 0, S("abcdefghij"));
918 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 1, S("abcde2fghij"));
919 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 9, S("abcde234567890fghij"));
920 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 18, S("abcde234567890123456789fghij"));
926 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890fghij"));
927 test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890fghij"));
928 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 0, S("abcdefghij"));
929 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 1, S("abcde1fghij"));
930 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 5, S("abcde12345fghij"));
931 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 9, S("abcde123456789fghij"));
932 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 10, S("abcde1234567890fghij"));
933 test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 11, S("abcde1234567890fghij"));
934 test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 0, S("abcdefghij"));
935 test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 1, S("abcde0fghij"));
936 test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 2, S("abcde0fghij"));
937 test(S("abcdefghij"), 5, S("12345678901234567890"), 20, 0, S("abcdefghij"));
938 test(S("abcdefghij"), 5, S("12345678901234567890"), 20, 1, S("abcdefghij"));
939 test(S("abcdefghij"), 5, S("12345678901234567890"), 21, 0, S("can't happen"));
940 test(S("abcdefghij"), 9, S(""), 0, 0, S("abcdefghij"));
941 test(S("abcdefghij"), 9, S(""), 0, 1, S("abcdefghij"));
942 test(S("abcdefghij"), 9, S(""), 1, 0, S("can't happen"));
943 test(S("abcdefghij"), 9, S("12345"), 0, 0, S("abcdefghij"));
944 test(S("abcdefghij"), 9, S("12345"), 0, 1, S("abcdefghi1j"));
945 test(S("abcdefghij"), 9, S("12345"), 0, 2, S("abcdefghi12j"));
946 test(S("abcdefghij"), 9, S("12345"), 0, 4, S("abcdefghi1234j"));
947 test(S("abcdefghij"), 9, S("12345"), 0, 5, S("abcdefghi12345j"));
948 test(S("abcdefghij"), 9, S("12345"), 0, 6, S("abcdefghi12345j"));
949 test(S("abcdefghij"), 9, S("12345"), 1, 0, S("abcdefghij"));
950 test(S("abcdefghij"), 9, S("12345"), 1, 1, S("abcdefghi2j"));
951 test(S("abcdefghij"), 9, S("12345"), 1, 2, S("abcdefghi23j"));
952 test(S("abcdefghij"), 9, S("12345"), 1, 3, S("abcdefghi234j"));
953 test(S("abcdefghij"), 9, S("12345"), 1, 4, S("abcdefghi2345j"));
954 test(S("abcdefghij"), 9, S("12345"), 1, 5, S("abcdefghi2345j"));
955 test(S("abcdefghij"), 9, S("12345"), 2, 0, S("abcdefghij"));
956 test(S("abcdefghij"), 9, S("12345"), 2, 1, S("abcdefghi3j"));
957 test(S("abcdefghij"), 9, S("12345"), 2, 2, S("abcdefghi34j"));
958 test(S("abcdefghij"), 9, S("12345"), 2, 3, S("abcdefghi345j"));
959 test(S("abcdefghij"), 9, S("12345"), 2, 4, S("abcdefghi345j"));
960 test(S("abcdefghij"), 9, S("12345"), 4, 0, S("abcdefghij"));
961 test(S("abcdefghij"), 9, S("12345"), 4, 1, S("abcdefghi5j"));
962 test(S("abcdefghij"), 9, S("12345"), 4, 2, S("abcdefghi5j"));
963 test(S("abcdefghij"), 9, S("12345"), 5, 0, S("abcdefghij"));
964 test(S("abcdefghij"), 9, S("12345"), 5, 1, S("abcdefghij"));
965 test(S("abcdefghij"), 9, S("12345"), 6, 0, S("can't happen"));
966 test(S("abcdefghij"), 9, S("1234567890"), 0, 0, S("abcdefghij"));
967 test(S("abcdefghij"), 9, S("1234567890"), 0, 1, S("abcdefghi1j"));
968 test(S("abcdefghij"), 9, S("1234567890"), 0, 5, S("abcdefghi12345j"));
969 test(S("abcdefghij"), 9, S("1234567890"), 0, 9, S("abcdefghi123456789j"));
970 test(S("abcdefghij"), 9, S("1234567890"), 0, 10, S("abcdefghi1234567890j"));
971 test(S("abcdefghij"), 9, S("1234567890"), 0, 11, S("abcdefghi1234567890j"));
972 test(S("abcdefghij"), 9, S("1234567890"), 1, 0, S("abcdefghij"));
973 test(S("abcdefghij"), 9, S("1234567890"), 1, 1, S("abcdefghi2j"));
974 test(S("abcdefghij"), 9, S("1234567890"), 1, 4, S("abcdefghi2345j"));
975 test(S("abcdefghij"), 9, S("1234567890"), 1, 8, S("abcdefghi23456789j"));
981 test(S("abcdefghij"), 9, S("1234567890"), 1, 9, S("abcdefghi234567890j"));
982 test(S("abcdefghij"), 9, S("1234567890"), 1, 10, S("abcdefghi234567890j"));
983 test(S("abcdefghij"), 9, S("1234567890"), 5, 0, S("abcdefghij"));
984 test(S("abcdefghij"), 9, S("1234567890"), 5, 1, S("abcdefghi6j"));
985 test(S("abcdefghij"), 9, S("1234567890"), 5, 2, S("abcdefghi67j"));
986 test(S("abcdefghij"), 9, S("1234567890"), 5, 4, S("abcdefghi6789j"));
987 test(S("abcdefghij"), 9, S("1234567890"), 5, 5, S("abcdefghi67890j"));
988 test(S("abcdefghij"), 9, S("1234567890"), 5, 6, S("abcdefghi67890j"));
989 test(S("abcdefghij"), 9, S("1234567890"), 9, 0, S("abcdefghij"));
990 test(S("abcdefghij"), 9, S("1234567890"), 9, 1, S("abcdefghi0j"));
991 test(S("abcdefghij"), 9, S("1234567890"), 9, 2, S("abcdefghi0j"));
992 test(S("abcdefghij"), 9, S("1234567890"), 10, 0, S("abcdefghij"));
993 test(S("abcdefghij"), 9, S("1234567890"), 10, 1, S("abcdefghij"));
994 test(S("abcdefghij"), 9, S("1234567890"), 11, 0, S("can't happen"));
995 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 0, S("abcdefghij"));
996 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 1, S("abcdefghi1j"));
997 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 10, S("abcdefghi1234567890j"));
998 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789j"));
999 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890j"));
1000 test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890j"));
1001 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 0, S("abcdefghij"));
1002 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 1, S("abcdefghi2j"));
1003 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 9, S("abcdefghi234567890j"));
1004 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789j"));
1005 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890j"));
1006 test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890j"));
1007 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 0, S("abcdefghij"));
1008 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 1, S("abcdefghi1j"));
1009 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 5, S("abcdefghi12345j"));
1010 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 9, S("abcdefghi123456789j"));
1011 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 10, S("abcdefghi1234567890j"));
1012 test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 11, S("abcdefghi1234567890j"));
1013 test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 0, S("abcdefghij"));
1014 test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 1, S("abcdefghi0j"));
1015 test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 2, S("abcdefghi0j"));
1016 test(S("abcdefghij"), 9, S("12345678901234567890"), 20, 0, S("abcdefghij"));
1017 test(S("abcdefghij"), 9, S("12345678901234567890"), 20, 1, S("abcdefghij"));
1018 test(S("abcdefghij"), 9, S("12345678901234567890"), 21, 0, S("can't happen"));
1019 test(S("abcdefghij"), 10, S(""), 0, 0, S("abcdefghij"));
1020 test(S("abcdefghij"), 10, S(""), 0, 1, S("abcdefghij"));
1021 test(S("abcdefghij"), 10, S(""), 1, 0, S("can't happen"));
1022 test(S("abcdefghij"), 10, S("12345"), 0, 0, S("abcdefghij"));
1023 test(S("abcdefghij"), 10, S("12345"), 0, 1, S("abcdefghij1"));
1024 test(S("abcdefghij"), 10, S("12345"), 0, 2, S("abcdefghij12"));
1025 test(S("abcdefghij"), 10, S("12345"), 0, 4, S("abcdefghij1234"));
1026 test(S("abcdefghij"), 10, S("12345"), 0, 5, S("abcdefghij12345"));
1027 test(S("abcdefghij"), 10, S("12345"), 0, 6, S("abcdefghij12345"));
1028 test(S("abcdefghij"), 10, S("12345"), 1, 0, S("abcdefghij"));
1029 test(S("abcdefghij"), 10, S("12345"), 1, 1, S("abcdefghij2"));
1030 test(S("abcdefghij"), 10, S("12345"), 1, 2, S("abcdefghij23"));
1036 test(S("abcdefghij"), 10, S("12345"), 1, 3, S("abcdefghij234"));
1037 test(S("abcdefghij"), 10, S("12345"), 1, 4, S("abcdefghij2345"));
1038 test(S("abcdefghij"), 10, S("12345"), 1, 5, S("abcdefghij2345"));
1039 test(S("abcdefghij"), 10, S("12345"), 2, 0, S("abcdefghij"));
1040 test(S("abcdefghij"), 10, S("12345"), 2, 1, S("abcdefghij3"));
1041 test(S("abcdefghij"), 10, S("12345"), 2, 2, S("abcdefghij34"));
1042 test(S("abcdefghij"), 10, S("12345"), 2, 3, S("abcdefghij345"));
1043 test(S("abcdefghij"), 10, S("12345"), 2, 4, S("abcdefghij345"));
1044 test(S("abcdefghij"), 10, S("12345"), 4, 0, S("abcdefghij"));
1045 test(S("abcdefghij"), 10, S("12345"), 4, 1, S("abcdefghij5"));
1046 test(S("abcdefghij"), 10, S("12345"), 4, 2, S("abcdefghij5"));
1047 test(S("abcdefghij"), 10, S("12345"), 5, 0, S("abcdefghij"));
1048 test(S("abcdefghij"), 10, S("12345"), 5, 1, S("abcdefghij"));
1049 test(S("abcdefghij"), 10, S("12345"), 6, 0, S("can't happen"));
1050 test(S("abcdefghij"), 10, S("1234567890"), 0, 0, S("abcdefghij"));
1051 test(S("abcdefghij"), 10, S("1234567890"), 0, 1, S("abcdefghij1"));
1052 test(S("abcdefghij"), 10, S("1234567890"), 0, 5, S("abcdefghij12345"));
1053 test(S("abcdefghij"), 10, S("1234567890"), 0, 9, S("abcdefghij123456789"));
1054 test(S("abcdefghij"), 10, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
1055 test(S("abcdefghij"), 10, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
1056 test(S("abcdefghij"), 10, S("1234567890"), 1, 0, S("abcdefghij"));
1057 test(S("abcdefghij"), 10, S("1234567890"), 1, 1, S("abcdefghij2"));
1058 test(S("abcdefghij"), 10, S("1234567890"), 1, 4, S("abcdefghij2345"));
1059 test(S("abcdefghij"), 10, S("1234567890"), 1, 8, S("abcdefghij23456789"));
1060 test(S("abcdefghij"), 10, S("1234567890"), 1, 9, S("abcdefghij234567890"));
1061 test(S("abcdefghij"), 10, S("1234567890"), 1, 10, S("abcdefghij234567890"));
1062 test(S("abcdefghij"), 10, S("1234567890"), 5, 0, S("abcdefghij"));
1063 test(S("abcdefghij"), 10, S("1234567890"), 5, 1, S("abcdefghij6"));
1064 test(S("abcdefghij"), 10, S("1234567890"), 5, 2, S("abcdefghij67"));
1065 test(S("abcdefghij"), 10, S("1234567890"), 5, 4, S("abcdefghij6789"));
1066 test(S("abcdefghij"), 10, S("1234567890"), 5, 5, S("abcdefghij67890"));
1067 test(S("abcdefghij"), 10, S("1234567890"), 5, 6, S("abcdefghij67890"));
1068 test(S("abcdefghij"), 10, S("1234567890"), 9, 0, S("abcdefghij"));
1069 test(S("abcdefghij"), 10, S("1234567890"), 9, 1, S("abcdefghij0"));
1070 test(S("abcdefghij"), 10, S("1234567890"), 9, 2, S("abcdefghij0"));
1071 test(S("abcdefghij"), 10, S("1234567890"), 10, 0, S("abcdefghij"));
1072 test(S("abcdefghij"), 10, S("1234567890"), 10, 1, S("abcdefghij"));
1073 test(S("abcdefghij"), 10, S("1234567890"), 11, 0, S("can't happen"));
1074 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 0, S("abcdefghij"));
1075 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
1076 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
1077 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
1078 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
1079 test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
1080 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 0, S("abcdefghij"));
1081 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
1082 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
1083 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
1084 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
1085 test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
1091 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 0, S("abcdefghij"));
1092 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
1093 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
1094 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
1095 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
1096 test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
1097 test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 0, S("abcdefghij"));
1098 test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
1099 test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
1100 test(S("abcdefghij"), 10, S("12345678901234567890"), 20, 0, S("abcdefghij"));
1101 test(S("abcdefghij"), 10, S("12345678901234567890"), 20, 1, S("abcdefghij"));
1102 test(S("abcdefghij"), 10, S("12345678901234567890"), 21, 0, S("can't happen"));
1103 test(S("abcdefghij"), 11, S(""), 0, 0, S("can't happen"));
1104 test(S("abcdefghij"), 11, S(""), 0, 1, S("can't happen"));
1105 test(S("abcdefghij"), 11, S(""), 1, 0, S("can't happen"));
1106 test(S("abcdefghij"), 11, S("12345"), 0, 0, S("can't happen"));
1107 test(S("abcdefghij"), 11, S("12345"), 0, 1, S("can't happen"));
1108 test(S("abcdefghij"), 11, S("12345"), 0, 2, S("can't happen"));
1109 test(S("abcdefghij"), 11, S("12345"), 0, 4, S("can't happen"));
1110 test(S("abcdefghij"), 11, S("12345"), 0, 5, S("can't happen"));
1111 test(S("abcdefghij"), 11, S("12345"), 0, 6, S("can't happen"));
1112 test(S("abcdefghij"), 11, S("12345"), 1, 0, S("can't happen"));
1113 test(S("abcdefghij"), 11, S("12345"), 1, 1, S("can't happen"));
1114 test(S("abcdefghij"), 11, S("12345"), 1, 2, S("can't happen"));
1115 test(S("abcdefghij"), 11, S("12345"), 1, 3, S("can't happen"));
1116 test(S("abcdefghij"), 11, S("12345"), 1, 4, S("can't happen"));
1117 test(S("abcdefghij"), 11, S("12345"), 1, 5, S("can't happen"));
1118 test(S("abcdefghij"), 11, S("12345"), 2, 0, S("can't happen"));
1119 test(S("abcdefghij"), 11, S("12345"), 2, 1, S("can't happen"));
1120 test(S("abcdefghij"), 11, S("12345"), 2, 2, S("can't happen"));
1121 test(S("abcdefghij"), 11, S("12345"), 2, 3, S("can't happen"));
1122 test(S("abcdefghij"), 11, S("12345"), 2, 4, S("can't happen"));
1123 test(S("abcdefghij"), 11, S("12345"), 4, 0, S("can't happen"));
1124 test(S("abcdefghij"), 11, S("12345"), 4, 1, S("can't happen"));
1125 test(S("abcdefghij"), 11, S("12345"), 4, 2, S("can't happen"));
1126 test(S("abcdefghij"), 11, S("12345"), 5, 0, S("can't happen"));
1127 test(S("abcdefghij"), 11, S("12345"), 5, 1, S("can't happen"));
1128 test(S("abcdefghij"), 11, S("12345"), 6, 0, S("can't happen"));
1129 test(S("abcdefghij"), 11, S("1234567890"), 0, 0, S("can't happen"));
1130 test(S("abcdefghij"), 11, S("1234567890"), 0, 1, S("can't happen"));
1131 test(S("abcdefghij"), 11, S("1234567890"), 0, 5, S("can't happen"));
1132 test(S("abcdefghij"), 11, S("1234567890"), 0, 9, S("can't happen"));
1133 test(S("abcdefghij"), 11, S("1234567890"), 0, 10, S("can't happen"));
1134 test(S("abcdefghij"), 11, S("1234567890"), 0, 11, S("can't happen"));
1135 test(S("abcdefghij"), 11, S("1234567890"), 1, 0, S("can't happen"));
1136 test(S("abcdefghij"), 11, S("1234567890"), 1, 1, S("can't happen"));
1137 test(S("abcdefghij"), 11, S("1234567890"), 1, 4, S("can't happen"));
1138 test(S("abcdefghij"), 11, S("1234567890"), 1, 8, S("can't happen"));
1139 test(S("abcdefghij"), 11, S("1234567890"), 1, 9, S("can't happen"));
1140 test(S("abcdefghij"), 11, S("1234567890"), 1, 10, S("can't happen"));
1146 test(S("abcdefghij"), 11, S("1234567890"), 5, 0, S("can't happen"));
1147 test(S("abcdefghij"), 11, S("1234567890"), 5, 1, S("can't happen"));
1148 test(S("abcdefghij"), 11, S("1234567890"), 5, 2, S("can't happen"));
1149 test(S("abcdefghij"), 11, S("1234567890"), 5, 4, S("can't happen"));
1150 test(S("abcdefghij"), 11, S("1234567890"), 5, 5, S("can't happen"));
1151 test(S("abcdefghij"), 11, S("1234567890"), 5, 6, S("can't happen"));
1152 test(S("abcdefghij"), 11, S("1234567890"), 9, 0, S("can't happen"));
1153 test(S("abcdefghij"), 11, S("1234567890"), 9, 1, S("can't happen"));
1154 test(S("abcdefghij"), 11, S("1234567890"), 9, 2, S("can't happen"));
1155 test(S("abcdefghij"), 11, S("1234567890"), 10, 0, S("can't happen"));
1156 test(S("abcdefghij"), 11, S("1234567890"), 10, 1, S("can't happen"));
1157 test(S("abcdefghij"), 11, S("1234567890"), 11, 0, S("can't happen"));
1158 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 0, S("can't happen"));
1159 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 1, S("can't happen"));
1160 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 10, S("can't happen"));
1161 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 19, S("can't happen"));
1162 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 20, S("can't happen"));
1163 test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 21, S("can't happen"));
1164 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 0, S("can't happen"));
1165 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 1, S("can't happen"));
1166 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 9, S("can't happen"));
1167 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 18, S("can't happen"));
1168 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 19, S("can't happen"));
1169 test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 20, S("can't happen"));
1170 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 0, S("can't happen"));
1171 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 1, S("can't happen"));
1172 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 5, S("can't happen"));
1173 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 9, S("can't happen"));
1174 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 10, S("can't happen"));
1175 test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 11, S("can't happen"));
1176 test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 0, S("can't happen"));
1177 test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 1, S("can't happen"));
1178 test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 2, S("can't happen"));
1179 test(S("abcdefghij"), 11, S("12345678901234567890"), 20, 0, S("can't happen"));
1180 test(S("abcdefghij"), 11, S("12345678901234567890"), 20, 1, S("can't happen"));
1181 test(S("abcdefghij"), 11, S("12345678901234567890"), 21, 0, S("can't happen"));
1182 test(S("abcdefghijklmnopqrst"), 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
1183 test(S("abcdefghijklmnopqrst"), 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
1184 test(S("abcdefghijklmnopqrst"), 0, S(""), 1, 0, S("can't happen"));
1185 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
1186 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 1, S("1abcdefghijklmnopqrst"));
1187 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 2, S("12abcdefghijklmnopqrst"));
1188 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 4, S("1234abcdefghijklmnopqrst"));
1189 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 5, S("12345abcdefghijklmnopqrst"));
1190 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 6, S("12345abcdefghijklmnopqrst"));
1191 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
1192 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 1, S("2abcdefghijklmnopqrst"));
1193 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 2, S("23abcdefghijklmnopqrst"));
1194 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 3, S("234abcdefghijklmnopqrst"));
1195 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 4, S("2345abcdefghijklmnopqrst"));
1201 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 5, S("2345abcdefghijklmnopqrst"));
1202 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
1203 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 1, S("3abcdefghijklmnopqrst"));
1204 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 2, S("34abcdefghijklmnopqrst"));
1205 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 3, S("345abcdefghijklmnopqrst"));
1206 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 4, S("345abcdefghijklmnopqrst"));
1207 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
1208 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 1, S("5abcdefghijklmnopqrst"));
1209 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 2, S("5abcdefghijklmnopqrst"));
1210 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
1211 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
1212 test(S("abcdefghijklmnopqrst"), 0, S("12345"), 6, 0, S("can't happen"));
1213 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1214 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
1215 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 5, S("12345abcdefghijklmnopqrst"));
1216 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 9, S("123456789abcdefghijklmnopqrst"));
1217 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
1218 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 11, S("1234567890abcdefghijklmnopqrst"));
1219 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1220 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
1221 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 4, S("2345abcdefghijklmnopqrst"));
1222 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 8, S("23456789abcdefghijklmnopqrst"));
1223 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
1224 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 10, S("234567890abcdefghijklmnopqrst"));
1225 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
1226 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 1, S("6abcdefghijklmnopqrst"));
1227 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 2, S("67abcdefghijklmnopqrst"));
1228 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 4, S("6789abcdefghijklmnopqrst"));
1229 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 5, S("67890abcdefghijklmnopqrst"));
1230 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 6, S("67890abcdefghijklmnopqrst"));
1231 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
1232 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 1, S("0abcdefghijklmnopqrst"));
1233 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 2, S("0abcdefghijklmnopqrst"));
1234 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1235 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
1236 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 11, 0, S("can't happen"));
1237 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1238 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
1239 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
1240 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghijklmnopqrst"));
1241 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghijklmnopqrst"));
1242 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghijklmnopqrst"));
1243 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1244 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
1245 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
1246 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghijklmnopqrst"));
1247 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghijklmnopqrst"));
1248 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghijklmnopqrst"));
1249 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1250 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 1, S("1abcdefghijklmnopqrst"));
1256 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 5, S("12345abcdefghijklmnopqrst"));
1257 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghijklmnopqrst"));
1258 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghijklmnopqrst"));
1259 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghijklmnopqrst"));
1260 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
1261 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 1, S("0abcdefghijklmnopqrst"));
1262 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 2, S("0abcdefghijklmnopqrst"));
1263 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
1264 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
1265 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
1266 test(S("abcdefghijklmnopqrst"), 1, S(""), 0, 0, S("abcdefghijklmnopqrst"));
1267 test(S("abcdefghijklmnopqrst"), 1, S(""), 0, 1, S("abcdefghijklmnopqrst"));
1268 test(S("abcdefghijklmnopqrst"), 1, S(""), 1, 0, S("can't happen"));
1269 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
1270 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 1, S("a1bcdefghijklmnopqrst"));
1271 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 2, S("a12bcdefghijklmnopqrst"));
1272 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 4, S("a1234bcdefghijklmnopqrst"));
1273 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 5, S("a12345bcdefghijklmnopqrst"));
1274 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 6, S("a12345bcdefghijklmnopqrst"));
1275 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
1276 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 1, S("a2bcdefghijklmnopqrst"));
1277 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 2, S("a23bcdefghijklmnopqrst"));
1278 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 3, S("a234bcdefghijklmnopqrst"));
1279 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 4, S("a2345bcdefghijklmnopqrst"));
1280 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 5, S("a2345bcdefghijklmnopqrst"));
1281 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
1282 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 1, S("a3bcdefghijklmnopqrst"));
1283 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 2, S("a34bcdefghijklmnopqrst"));
1284 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 3, S("a345bcdefghijklmnopqrst"));
1285 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 4, S("a345bcdefghijklmnopqrst"));
1286 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
1287 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 1, S("a5bcdefghijklmnopqrst"));
1288 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 2, S("a5bcdefghijklmnopqrst"));
1289 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
1290 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
1291 test(S("abcdefghijklmnopqrst"), 1, S("12345"), 6, 0, S("can't happen"));
1292 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1293 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
1294 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 5, S("a12345bcdefghijklmnopqrst"));
1295 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 9, S("a123456789bcdefghijklmnopqrst"));
1296 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
1297 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 11, S("a1234567890bcdefghijklmnopqrst"));
1298 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1299 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
1300 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 4, S("a2345bcdefghijklmnopqrst"));
1301 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 8, S("a23456789bcdefghijklmnopqrst"));
1302 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
1303 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 10, S("a234567890bcdefghijklmnopqrst"));
1304 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
1305 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 1, S("a6bcdefghijklmnopqrst"));
1311 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 2, S("a67bcdefghijklmnopqrst"));
1312 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 4, S("a6789bcdefghijklmnopqrst"));
1313 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 5, S("a67890bcdefghijklmnopqrst"));
1314 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 6, S("a67890bcdefghijklmnopqrst"));
1315 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
1316 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 1, S("a0bcdefghijklmnopqrst"));
1317 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 2, S("a0bcdefghijklmnopqrst"));
1318 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1319 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
1320 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 11, 0, S("can't happen"));
1321 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1322 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
1323 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
1324 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghijklmnopqrst"));
1325 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghijklmnopqrst"));
1326 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghijklmnopqrst"));
1327 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1328 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
1329 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
1330 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghijklmnopqrst"));
1331 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghijklmnopqrst"));
1332 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghijklmnopqrst"));
1333 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1334 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 1, S("a1bcdefghijklmnopqrst"));
1335 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 5, S("a12345bcdefghijklmnopqrst"));
1336 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcdefghijklmnopqrst"));
1337 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghijklmnopqrst"));
1338 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghijklmnopqrst"));
1339 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
1340 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 1, S("a0bcdefghijklmnopqrst"));
1341 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 2, S("a0bcdefghijklmnopqrst"));
1342 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
1343 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
1344 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
1345 test(S("abcdefghijklmnopqrst"), 10, S(""), 0, 0, S("abcdefghijklmnopqrst"));
1346 test(S("abcdefghijklmnopqrst"), 10, S(""), 0, 1, S("abcdefghijklmnopqrst"));
1347 test(S("abcdefghijklmnopqrst"), 10, S(""), 1, 0, S("can't happen"));
1348 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
1349 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 1, S("abcdefghij1klmnopqrst"));
1350 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 2, S("abcdefghij12klmnopqrst"));
1351 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 4, S("abcdefghij1234klmnopqrst"));
1352 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 5, S("abcdefghij12345klmnopqrst"));
1353 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 6, S("abcdefghij12345klmnopqrst"));
1354 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
1355 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 1, S("abcdefghij2klmnopqrst"));
1356 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 2, S("abcdefghij23klmnopqrst"));
1357 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 3, S("abcdefghij234klmnopqrst"));
1358 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 4, S("abcdefghij2345klmnopqrst"));
1359 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 5, S("abcdefghij2345klmnopqrst"));
1360 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
1366 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 1, S("abcdefghij3klmnopqrst"));
1367 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 2, S("abcdefghij34klmnopqrst"));
1368 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 3, S("abcdefghij345klmnopqrst"));
1369 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 4, S("abcdefghij345klmnopqrst"));
1370 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
1371 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 1, S("abcdefghij5klmnopqrst"));
1372 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 2, S("abcdefghij5klmnopqrst"));
1373 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
1374 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
1375 test(S("abcdefghijklmnopqrst"), 10, S("12345"), 6, 0, S("can't happen"));
1376 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1377 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
1378 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 5, S("abcdefghij12345klmnopqrst"));
1379 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 9, S("abcdefghij123456789klmnopqrst"));
1380 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
1381 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 11, S("abcdefghij1234567890klmnopqrst"));
1382 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1383 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
1384 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 4, S("abcdefghij2345klmnopqrst"));
1385 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 8, S("abcdefghij23456789klmnopqrst"));
1386 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
1387 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 10, S("abcdefghij234567890klmnopqrst"));
1388 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
1389 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 1, S("abcdefghij6klmnopqrst"));
1390 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 2, S("abcdefghij67klmnopqrst"));
1391 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 4, S("abcdefghij6789klmnopqrst"));
1392 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 5, S("abcdefghij67890klmnopqrst"));
1393 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 6, S("abcdefghij67890klmnopqrst"));
1394 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
1395 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 1, S("abcdefghij0klmnopqrst"));
1396 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 2, S("abcdefghij0klmnopqrst"));
1397 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1398 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
1399 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 11, 0, S("can't happen"));
1400 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1401 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
1402 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
1403 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789klmnopqrst"));
1404 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890klmnopqrst"));
1405 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890klmnopqrst"));
1406 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1407 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
1408 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
1409 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789klmnopqrst"));
1410 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890klmnopqrst"));
1411 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890klmnopqrst"));
1412 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1413 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 1, S("abcdefghij1klmnopqrst"));
1414 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 5, S("abcdefghij12345klmnopqrst"));
1415 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 9, S("abcdefghij123456789klmnopqrst"));
1421 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890klmnopqrst"));
1422 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890klmnopqrst"));
1423 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
1424 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 1, S("abcdefghij0klmnopqrst"));
1425 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 2, S("abcdefghij0klmnopqrst"));
1426 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
1427 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
1428 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 21, 0, S("can't happen"));
1429 test(S("abcdefghijklmnopqrst"), 19, S(""), 0, 0, S("abcdefghijklmnopqrst"));
1430 test(S("abcdefghijklmnopqrst"), 19, S(""), 0, 1, S("abcdefghijklmnopqrst"));
1431 test(S("abcdefghijklmnopqrst"), 19, S(""), 1, 0, S("can't happen"));
1432 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
1433 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 1, S("abcdefghijklmnopqrs1t"));
1434 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 2, S("abcdefghijklmnopqrs12t"));
1435 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 4, S("abcdefghijklmnopqrs1234t"));
1436 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 5, S("abcdefghijklmnopqrs12345t"));
1437 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 6, S("abcdefghijklmnopqrs12345t"));
1438 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
1439 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 1, S("abcdefghijklmnopqrs2t"));
1440 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 2, S("abcdefghijklmnopqrs23t"));
1441 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 3, S("abcdefghijklmnopqrs234t"));
1442 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 4, S("abcdefghijklmnopqrs2345t"));
1443 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 5, S("abcdefghijklmnopqrs2345t"));
1444 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
1445 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 1, S("abcdefghijklmnopqrs3t"));
1446 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 2, S("abcdefghijklmnopqrs34t"));
1447 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 3, S("abcdefghijklmnopqrs345t"));
1448 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 4, S("abcdefghijklmnopqrs345t"));
1449 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
1450 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 1, S("abcdefghijklmnopqrs5t"));
1451 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 2, S("abcdefghijklmnopqrs5t"));
1452 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
1453 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
1454 test(S("abcdefghijklmnopqrst"), 19, S("12345"), 6, 0, S("can't happen"));
1455 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1456 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
1457 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345t"));
1458 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789t"));
1459 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
1460 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890t"));
1461 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1462 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
1463 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345t"));
1464 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789t"));
1465 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
1466 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890t"));
1467 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
1468 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 1, S("abcdefghijklmnopqrs6t"));
1469 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 2, S("abcdefghijklmnopqrs67t"));
1470 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789t"));
1476 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890t"));
1477 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890t"));
1478 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
1479 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 1, S("abcdefghijklmnopqrs0t"));
1480 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 2, S("abcdefghijklmnopqrs0t"));
1481 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1482 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
1483 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 11, 0, S("can't happen"));
1484 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1485 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
1486 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
1487 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789t"));
1488 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890t"));
1489 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890t"));
1490 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1491 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
1492 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
1493 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789t"));
1494 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890t"));
1495 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890t"));
1496 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1497 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1t"));
1498 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345t"));
1499 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789t"));
1500 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890t"));
1501 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890t"));
1502 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
1503 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0t"));
1504 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0t"));
1505 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
1506 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
1507 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 21, 0, S("can't happen"));
1508 test(S("abcdefghijklmnopqrst"), 20, S(""), 0, 0, S("abcdefghijklmnopqrst"));
1509 test(S("abcdefghijklmnopqrst"), 20, S(""), 0, 1, S("abcdefghijklmnopqrst"));
1510 test(S("abcdefghijklmnopqrst"), 20, S(""), 1, 0, S("can't happen"));
1511 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
1512 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
1513 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
1514 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
1515 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
1516 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
1517 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
1518 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
1519 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
1520 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
1521 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
1522 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
1523 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
1524 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
1525 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
1531 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
1532 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
1533 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
1534 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
1535 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
1536 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
1537 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
1538 test(S("abcdefghijklmnopqrst"), 20, S("12345"), 6, 0, S("can't happen"));
1539 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1540 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
1541 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
1542 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
1543 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
1544 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
1545 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1546 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
1547 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
1548 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
1549 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
1550 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
1551 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
1552 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
1553 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
1554 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
1555 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
1556 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
1557 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
1558 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
1559 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
1560 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1561 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
1562 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 11, 0, S("can't happen"));
1563 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
1564 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
1565 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
1566 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
1567 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
1568 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
1569 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
1570 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
1571 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
1572 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
1573 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
1574 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
1575 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
1576 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
1577 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
1578 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
1579 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
1580 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
1586 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
1587 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
1588 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
1589 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
1590 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
1591 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 21, 0, S("can't happen"));
1592 test(S("abcdefghijklmnopqrst"), 21, S(""), 0, 0, S("can't happen"));
1593 test(S("abcdefghijklmnopqrst"), 21, S(""), 0, 1, S("can't happen"));
1594 test(S("abcdefghijklmnopqrst"), 21, S(""), 1, 0, S("can't happen"));
1595 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 0, S("can't happen"));
1596 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 1, S("can't happen"));
1597 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 2, S("can't happen"));
1598 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 4, S("can't happen"));
1599 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 5, S("can't happen"));
1600 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 6, S("can't happen"));
1601 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 0, S("can't happen"));
1602 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 1, S("can't happen"));
1603 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 2, S("can't happen"));
1604 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 3, S("can't happen"));
1605 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 4, S("can't happen"));
1606 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 5, S("can't happen"));
1607 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 0, S("can't happen"));
1608 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 1, S("can't happen"));
1609 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 2, S("can't happen"));
1610 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 3, S("can't happen"));
1611 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 4, S("can't happen"));
1612 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 0, S("can't happen"));
1613 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 1, S("can't happen"));
1614 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 2, S("can't happen"));
1615 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 5, 0, S("can't happen"));
1616 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 5, 1, S("can't happen"));
1617 test(S("abcdefghijklmnopqrst"), 21, S("12345"), 6, 0, S("can't happen"));
1618 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 0, S("can't happen"));
1619 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 1, S("can't happen"));
1620 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 5, S("can't happen"));
1621 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 9, S("can't happen"));
1622 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 10, S("can't happen"));
1623 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 11, S("can't happen"));
1624 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 0, S("can't happen"));
1625 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 1, S("can't happen"));
1626 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 4, S("can't happen"));
1627 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 8, S("can't happen"));
1628 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 9, S("can't happen"));
1629 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 10, S("can't happen"));
1630 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 0, S("can't happen"));
1631 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 1, S("can't happen"));
1632 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 2, S("can't happen"));
1633 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 4, S("can't happen"));
1634 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 5, S("can't happen"));
1635 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 6, S("can't happen"));
1641 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 0, S("can't happen"));
1642 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 1, S("can't happen"));
1643 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 2, S("can't happen"));
1644 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 10, 0, S("can't happen"));
1645 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 10, 1, S("can't happen"));
1646 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 11, 0, S("can't happen"));
1647 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 0, S("can't happen"));
1648 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 1, S("can't happen"));
1649 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 10, S("can't happen"));
1650 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 19, S("can't happen"));
1651 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 20, S("can't happen"));
1652 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 21, S("can't happen"));
1653 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 0, S("can't happen"));
1654 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 1, S("can't happen"));
1655 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 9, S("can't happen"));
1656 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 18, S("can't happen"));
1657 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 19, S("can't happen"));
1658 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 20, S("can't happen"));
1659 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 0, S("can't happen"));
1660 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 1, S("can't happen"));
1661 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 5, S("can't happen"));
1662 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 9, S("can't happen"));
1663 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 10, S("can't happen"));
1664 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 11, S("can't happen"));
1665 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 0, S("can't happen"));
1666 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 1, S("can't happen"));
1667 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 2, S("can't happen"));
1668 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 20, 0, S("can't happen"));
1669 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 20, 1, S("can't happen"));
1670 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 21, 0, S("can't happen"));
1676 typedef std::string S;
1708 #if __cplusplus >= 201103L
1710 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;