1 /* Test for string function add boundaries of usable memory.
2 Copyright (C) 1996,1997,1999-2002,2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
22 /* Make sure we don't test the optimized inline functions if we want to
23 test the real implementation. */
24 #undef __USE_STRING_INLINES
31 #include <sys/param.h>
34 #define MAX(a, b) ((a) > (b) ? (a) : (b))
38 main (int argc, char *argv[])
40 int size = sysconf (_SC_PAGESIZE);
44 adr = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
45 MAP_PRIVATE | MAP_ANON, -1, 0);
46 dest = (char *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
47 MAP_PRIVATE | MAP_ANON, -1, 0);
48 if (adr == MAP_FAILED || dest == MAP_FAILED)
51 puts ("No test, mmap not available.");
54 printf ("mmap failed: %s", strerror(errno));
60 int inner, middle, outer;
62 mprotect(adr, size, PROT_NONE);
63 mprotect(adr + 2 * size, size, PROT_NONE);
66 mprotect(dest, size, PROT_NONE);
67 mprotect(dest + 2 * size, size, PROT_NONE);
70 memset (adr, 'T', size);
73 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
75 for (inner = MAX (outer, size - 64); inner < size; ++inner)
79 if (strlen (&adr[outer]) != (size_t) (inner - outer))
81 printf ("strlen flunked for outer = %d, inner = %d\n",
91 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
93 for (middle = MAX (outer, size - 64); middle < size; ++middle)
95 for (inner = middle; inner < size; ++inner)
101 cp = strchr (&adr[outer], 'V');
103 if ((inner == middle && cp != NULL)
105 && (cp - &adr[outer]) != middle - outer))
107 printf ("strchr flunked for outer = %d, middle = %d, "
108 "inner = %d\n", outer, middle, inner);
119 adr[size - 1] = '\0';
120 if (strchr (&adr[size - 1], '\n') != NULL)
122 puts ("strchr flunked for test of empty string at end of page");
127 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
129 for (middle = MAX (outer, size - 64); middle < size; ++middle)
131 for (inner = middle; inner < size; ++inner)
137 cp = strrchr (&adr[outer], 'V');
139 if ((inner == middle && cp != NULL)
141 && (cp - &adr[outer]) != middle - outer))
143 printf ("strrchr flunked for outer = %d, middle = %d, "
144 "inner = %d\n", outer, middle, inner);
155 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
157 for (middle = MAX (outer, size - 64); middle < size; ++middle)
162 cp = rawmemchr (&adr[outer], 'V');
164 if (cp - &adr[outer] != middle - outer)
166 printf ("rawmemchr flunked for outer = %d, middle = %d\n",
176 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
178 for (inner = MAX (outer, size - 64); inner < size; ++inner)
182 if (strcpy (dest, &adr[outer]) != dest
183 || strlen (dest) != (size_t) (inner - outer))
185 printf ("strcpy flunked for outer = %d, inner = %d\n",
196 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
200 for (len = 0; len < size - outer; ++len)
202 if (strncpy (dest, &adr[outer], len) != dest
203 || memcmp (dest, &adr[outer], len) != 0)
205 printf ("outer strncpy flunked for outer = %d, len = %Zd\n",
213 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
215 for (inner = MAX (outer, size - 64); inner < size; ++inner)
221 for (len = 0; len < size - outer + 64; ++len)
223 if (strncpy (dest, &adr[outer], len) != dest
224 || memcmp (dest, &adr[outer],
225 MIN (inner - outer, len)) != 0
226 || (inner - outer < len
227 && strlen (dest) != (inner - outer)))
229 printf ("strncpy flunked for outer = %d, inner = %d, len = %Zd\n",
233 if (strncpy (dest + 1, &adr[outer], len) != dest + 1
234 || memcmp (dest + 1, &adr[outer],
235 MIN (inner - outer, len)) != 0
236 || (inner - outer < len
237 && strlen (dest + 1) != (inner - outer)))
239 printf ("strncpy+1 flunked for outer = %d, inner = %d, len = %Zd\n",
250 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
252 for (inner = MAX (outer, size - 64); inner < size; ++inner)
256 if ((stpcpy (dest, &adr[outer]) - dest) != inner - outer)
258 printf ("stpcpy flunked for outer = %d, inner = %d\n",
268 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
270 for (middle = MAX (outer, size - 64); middle < size; ++middle)
274 for (inner = 0; inner < size - outer; ++ inner)
276 if ((stpncpy (dest, &adr[outer], inner) - dest)
277 != MIN (inner, middle - outer))
279 printf ("stpncpy flunked for outer = %d, middle = %d, "
280 "inner = %d\n", outer, middle, inner);
290 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
291 for (inner = 0; inner < size - outer; ++inner)
292 if (memcpy (dest, &adr[outer], inner) != dest)
294 printf ("memcpy flunked for outer = %d, inner = %d\n",
300 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
301 for (inner = 0; inner < size - outer; ++inner)
302 if (mempcpy (dest, &adr[outer], inner) != dest + inner)
304 printf ("mempcpy flunked for outer = %d, inner = %d\n",
310 memset (adr, '\0', size);
311 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
312 for (inner = 0; inner < size - outer; ++inner)
313 if (memccpy (dest, &adr[outer], '\1', inner) != NULL)
315 printf ("memccpy flunked full copy for outer = %d, inner = %d\n",
319 for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
320 for (middle = 0; middle < size - outer; ++middle)
322 memset (dest, '\2', middle + 1);
323 for (inner = 0; inner < middle; ++inner)
325 adr[outer + inner] = '\1';
327 if (memccpy (dest, &adr[outer], '\1', middle + 128)
331 memccpy flunked partial copy for outer = %d, middle = %d, inner = %d\n",
332 outer, middle, inner);
335 else if (dest[inner + 1] != '\2')
338 memccpy copied too much for outer = %d, middle = %d, inner = %d\n",
339 outer, middle, inner);
342 adr[outer + inner] = '\0';