modules/rostests/winetests/msvcrt/heap.c

   1 /*
   2  * Unit test suite for memory functions
   3  *
   4  * Copyright 2003 Dimitrie O. Paun
   5  *
   6  * This 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.
  10  *
  11  * This 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.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdlib.h>
  22 #include <malloc.h>
  23 #include <errno.h>
  24 #include "wine/test.h"
  25
  26 #ifdef __REACTOS__
  27 #if defined(__GNUC__) && __GNUC__ >= 7
  28 #pragma GCC diagnostic ignored "-Walloc-size-larger-than=9223372036854775807"
  29 #endif
  30 #endif
  31
  32 static void (__cdecl *p_aligned_free)(void*) = NULL;
  33 static void * (__cdecl *p_aligned_malloc)(size_t,size_t) = NULL;
  34 static void * (__cdecl *p_aligned_offset_malloc)(size_t,size_t,size_t) = NULL;
  35 static void * (__cdecl *p_aligned_realloc)(void*,size_t,size_t) = NULL;
  36 static void * (__cdecl *p_aligned_offset_realloc)(void*,size_t,size_t,size_t) = NULL;
  37
  38 static void test_aligned_malloc(unsigned int size, unsigned int alignment)
  39 {
  40     void *mem;
  41
  42     mem = p_aligned_malloc(size, alignment);
  43
  44     if ((alignment & (alignment - 1)) == 0)
  45         ok(mem != NULL, "_aligned_malloc(%d, %d) failed\n", size, alignment);
  46     else
  47         ok(mem == NULL, "_aligned_malloc(%d, %d) should have failed\n", size, alignment);
  48
  49     if (mem)
  50     {
  51         ok(((DWORD_PTR)mem & (alignment ? alignment - 1 : 0)) == 0,
  52            "_aligned_malloc(%d, %d) not aligned: %p\n", size, alignment, mem);
  53         if (winetest_debug > 1)
  54         {
  55             void *saved;
  56             saved = *(void **)((DWORD_PTR)((char *)mem - sizeof(void *)) & ~(sizeof(void *) - 1));
  57             trace("_aligned_malloc(%3d, %3d) returns %p, saved = %p\n", size, alignment, mem, saved );
  58         }
  59         p_aligned_free(mem);
  60     }
  61     else
  62         ok(errno == EINVAL, "_aligned_malloc(%d, %d) errno: %d != %d\n", size, alignment, errno, EINVAL);
  63 }
  64
  65 static void test_aligned_offset_malloc(unsigned int size, unsigned int alignment, unsigned int offset)
  66 {
  67     void *mem;
  68
  69     mem = p_aligned_offset_malloc(size, alignment, offset);
  70
  71     if ((alignment & (alignment - 1)) == 0)
  72         if (offset < size)
  73             ok(mem != NULL, "_aligned_offset_malloc(%d, %d, %d) failed\n", size, alignment, offset);
  74         else
  75             ok(errno == EINVAL, "_aligned_offset_malloc(%d, %d, %d) errno: %d != %d\n", size, alignment, offset, errno, EINVAL);
  76     else
  77         ok(mem == NULL, "_aligned_offset_malloc(%d, %d, %d) should have failed\n", size, alignment, offset);
  78
  79     if (mem)
  80     {
  81         ok(((DWORD_PTR)((char *)mem + offset) & (alignment ? alignment - 1 : 0)) == 0,
  82            "_aligned_offset_malloc(%d, %d, %d) not aligned: %p\n", size, alignment, offset, mem);
  83         if (winetest_debug > 1)
  84         {
  85             void *saved;
  86             saved = *(void **)((DWORD_PTR)((char *)mem - sizeof(void *)) & ~(sizeof(void *) - 1));
  87             trace("_aligned_offset_malloc(%3d, %3d, %3d) returns %p, saved = %p\n",
  88                   size, alignment, offset, mem, saved);
  89         }
  90         p_aligned_free(mem);
  91     }
  92     else
  93         ok(errno == EINVAL, "_aligned_offset_malloc(%d, %d, %d) errno: %d != %d\n", size, alignment, offset, errno, EINVAL);
  94 }
  95
  96 static void test_aligned_realloc(unsigned int size1, unsigned int size2, unsigned int alignment)
  97 {
  98     void *mem, *mem1, *mem2;
  99
 100     mem = p_aligned_malloc(size1, alignment);
 101
 102     if ((alignment & (alignment - 1)) == 0)
 103         ok(mem != NULL, "_aligned_malloc(%d, %d) failed\n", size1, alignment);
 104     else
 105         ok(mem == NULL, "_aligned_malloc(%d, %d) should have failed\n", size1, alignment);
 106
 107     if (mem)
 108     {
 109         mem1 = malloc(size1);
 110         if (mem1)
 111         {
 112             unsigned int i;
 113             for (i = 0; i < size1; i++)
 114                 ((char *)mem)[i] = i + 1;
 115             memcpy(mem1, mem, size1);
 116         }
 117
 118         ok(((DWORD_PTR)mem & (alignment ? alignment - 1 : 0)) == 0,
 119            "_aligned_malloc(%d, %d) not aligned: %p\n", size1, alignment, mem);
 120         if (winetest_debug > 1)
 121         {
 122             void *saved;
 123             saved = *(void **)((DWORD_PTR)((char *)mem - sizeof(void *)) & ~(sizeof(void *) - 1));
 124             trace("_aligned_malloc(%3d, %3d) returns %p, saved = %p\n", size1, alignment, mem, saved);
 125         }
 126
 127         mem2 = p_aligned_realloc(mem, size2, alignment);
 128
 129         ok(mem2 != NULL, "_aligned_realloc(%p, %d, %d) failed\n", mem, size2, alignment);
 130
 131         if (mem2)
 132         {
 133             ok(((DWORD_PTR)mem2 & (alignment ? alignment - 1 : 0)) == 0,
 134                "_aligned_realloc(%p, %d, %d) not aligned: %p\n", mem, size2, alignment, mem2);
 135             if (winetest_debug > 1)
 136             {
 137                 void *saved;
 138                 saved = *(void **)((DWORD_PTR)((char *)mem2 - sizeof(void *)) & ~(sizeof(void *) - 1));
 139                 trace("_aligned_realloc(%p, %3d, %3d) returns %p, saved = %p\n",
 140                       mem, size2, alignment, mem2, saved);
 141             }
 142             if (mem1)
 143             {
 144                 ok(memcmp(mem2, mem1, min(size1, size2))==0, "_aligned_realloc(%p, %d, %d) has different data\n", mem, size2, alignment);
 145                 if (memcmp(mem2, mem1, min(size1, size2)) && winetest_debug > 1)
 146                 {
 147                     unsigned int i;
 148                     for (i = 0; i < min(size1, size2); i++)
 149                     {
 150                         if (((char *)mem2)[i] != ((char *)mem1)[i])
 151                             trace("%d: %02x != %02x\n", i, ((char *)mem2)[i] & 0xff, ((char *)mem1)[i] & 0xff);
 152                     }
 153                 }
 154             }
 155             p_aligned_free(mem2);
 156         } else {
 157             ok(errno == EINVAL, "_aligned_realloc(%p, %d, %d) errno: %d != %d\n", mem, size2, alignment, errno, EINVAL);
 158             p_aligned_free(mem);
 159         }
 160
 161         free(mem1);
 162     }
 163     else
 164         ok(errno == EINVAL, "_aligned_malloc(%d, %d) errno: %d != %d\n", size1, alignment, errno, EINVAL);
 165 }
 166
 167 static void test_aligned_offset_realloc(unsigned int size1, unsigned int size2,
 168                                         unsigned int alignment, unsigned int offset)
 169 {
 170     void *mem, *mem1, *mem2;
 171
 172     mem = p_aligned_offset_malloc(size1, alignment, offset);
 173
 174     if ((alignment & (alignment - 1)) == 0)
 175         ok(mem != NULL, "_aligned_offset_malloc(%d, %d, %d) failed\n", size1, alignment, offset);
 176     else
 177         ok(mem == NULL, "_aligned_offset_malloc(%d, %d, %d) should have failed\n", size1, alignment, offset);
 178
 179     if (mem)
 180     {
 181         mem1 = malloc(size1);
 182         if (mem1)
 183         {
 184             unsigned int i;
 185             for (i = 0; i < size1; i++)
 186                 ((char *)mem)[i] = i + 1;
 187             memcpy(mem1, mem, size1);
 188         }
 189
 190         ok(((DWORD_PTR)((char *)mem + offset) & (alignment ? alignment - 1 : 0)) == 0,
 191            "_aligned_offset_malloc(%d, %d, %d) not aligned: %p\n", size1, alignment, offset, mem);
 192         if (winetest_debug > 1)
 193         {
 194             void *saved;
 195             saved = *(void **)((DWORD_PTR)((char *)mem - sizeof(void *)) & ~(sizeof(void *) - 1));
 196             trace("_aligned_offset_malloc(%3d, %3d, %3d) returns %p, saved = %p\n",
 197                   size1, alignment, offset, mem, saved);
 198         }
 199
 200         mem2 = p_aligned_offset_realloc(mem, size2, alignment, offset);
 201
 202         ok(mem2 != NULL, "_aligned_offset_realloc(%p, %d, %d, %d) failed\n", mem, size2, alignment, offset);
 203
 204         if (mem2)
 205         {
 206             ok(((DWORD_PTR)((char *)mem + offset) & (alignment ? alignment - 1 : 0)) == 0,
 207                "_aligned_offset_realloc(%p, %d, %d, %d) not aligned: %p\n", mem, size2, alignment, offset, mem2);
 208             if (winetest_debug > 1)
 209             {
 210                 void *saved;
 211                 saved = *(void **)((DWORD_PTR)((char *)mem2 - sizeof(void *)) & ~(sizeof(void *) - 1));
 212                 trace("_aligned_offset_realloc(%p, %3d, %3d, %3d) returns %p, saved = %p\n",
 213                       mem, size2, alignment, offset, mem2, saved);
 214             }
 215             if (mem1)
 216             {
 217                 ok(memcmp(mem2, mem1, min(size1, size2))==0, "_aligned_offset_realloc(%p, %d, %d, %d) has different data\n", mem, size2, alignment, offset);
 218                 if (memcmp(mem2, mem1, min(size1, size2)) && winetest_debug > 1)
 219                 {
 220                     unsigned int i;
 221                     for (i = 0; i < min(size1, size2); i++)
 222                     {
 223                         if (((char *)mem2)[i] != ((char *)mem1)[i])
 224                             trace("%d: %02x != %02x\n", i, ((char *)mem2)[i] & 0xff, ((char *)mem1)[i] & 0xff);
 225                     }
 226                 }
 227             }
 228             p_aligned_free(mem2);
 229         } else {
 230             ok(errno == EINVAL, "_aligned_offset_realloc(%p, %d, %d, %d) errno: %d != %d\n", mem, size2, alignment, offset, errno, EINVAL);
 231             p_aligned_free(mem);
 232         }
 233
 234         free(mem1);
 235     }
 236     else
 237         ok(errno == EINVAL, "_aligned_offset_malloc(%d, %d) errno: %d != %d\n", size1, alignment, errno, EINVAL);
 238 }
 239
 240 static void test_aligned(void)
 241 {
 242     HMODULE msvcrt = GetModuleHandleA("msvcrt.dll");
 243
 244     if (msvcrt == NULL)
 245         return;
 246
 247     p_aligned_free = (void*)GetProcAddress(msvcrt, "_aligned_free");
 248     p_aligned_malloc = (void*)GetProcAddress(msvcrt, "_aligned_malloc");
 249     p_aligned_offset_malloc = (void*)GetProcAddress(msvcrt, "_aligned_offset_malloc");
 250     p_aligned_realloc = (void*)GetProcAddress(msvcrt, "_aligned_realloc");
 251     p_aligned_offset_realloc = (void*)GetProcAddress(msvcrt, "_aligned_offset_realloc");
 252
 253     if (!p_aligned_free || !p_aligned_malloc || !p_aligned_offset_malloc || !p_aligned_realloc || !p_aligned_offset_realloc)
 254     {
 255         skip("aligned memory tests skipped\n");
 256         return;
 257     }
 258
 259     test_aligned_malloc(256, 0);
 260     test_aligned_malloc(256, 1);
 261     test_aligned_malloc(256, 2);
 262     test_aligned_malloc(256, 3);
 263     test_aligned_malloc(256, 4);
 264     test_aligned_malloc(256, 8);
 265     test_aligned_malloc(256, 16);
 266     test_aligned_malloc(256, 32);
 267     test_aligned_malloc(256, 64);
 268     test_aligned_malloc(256, 127);
 269     test_aligned_malloc(256, 128);
 270
 271     test_aligned_offset_malloc(256, 0, 0);
 272     test_aligned_offset_malloc(256, 1, 0);
 273     test_aligned_offset_malloc(256, 2, 0);
 274     test_aligned_offset_malloc(256, 3, 0);
 275     test_aligned_offset_malloc(256, 4, 0);
 276     test_aligned_offset_malloc(256, 8, 0);
 277     test_aligned_offset_malloc(256, 16, 0);
 278     test_aligned_offset_malloc(256, 32, 0);
 279     test_aligned_offset_malloc(256, 64, 0);
 280     test_aligned_offset_malloc(256, 127, 0);
 281     test_aligned_offset_malloc(256, 128, 0);
 282
 283     test_aligned_offset_malloc(256, 0, 4);
 284     test_aligned_offset_malloc(256, 1, 4);
 285     test_aligned_offset_malloc(256, 2, 4);
 286     test_aligned_offset_malloc(256, 3, 4);
 287     test_aligned_offset_malloc(256, 4, 4);
 288     test_aligned_offset_malloc(256, 8, 4);
 289     test_aligned_offset_malloc(256, 16, 4);
 290     test_aligned_offset_malloc(256, 32, 4);
 291     test_aligned_offset_malloc(256, 64, 4);
 292     test_aligned_offset_malloc(256, 127, 4);
 293     test_aligned_offset_malloc(256, 128, 4);
 294
 295     test_aligned_offset_malloc(256, 8, 7);
 296     test_aligned_offset_malloc(256, 8, 9);
 297     test_aligned_offset_malloc(256, 8, 16);
 298     test_aligned_offset_malloc(256, 8, 17);
 299     test_aligned_offset_malloc(256, 8, 254);
 300     test_aligned_offset_malloc(256, 8, 255);
 301     test_aligned_offset_malloc(256, 8, 256);
 302     test_aligned_offset_malloc(256, 8, 512);
 303
 304     test_aligned_realloc(256, 512, 0);
 305     test_aligned_realloc(256, 128, 0);
 306     test_aligned_realloc(256, 512, 4);
 307     test_aligned_realloc(256, 128, 4);
 308     test_aligned_realloc(256, 512, 8);
 309     test_aligned_realloc(256, 128, 8);
 310     test_aligned_realloc(256, 512, 16);
 311     test_aligned_realloc(256, 128, 16);
 312     test_aligned_realloc(256, 512, 32);
 313     test_aligned_realloc(256, 128, 32);
 314     test_aligned_realloc(256, 512, 64);
 315     test_aligned_realloc(256, 128, 64);
 316
 317     test_aligned_offset_realloc(256, 512, 0, 0);
 318     test_aligned_offset_realloc(256, 128, 0, 0);
 319     test_aligned_offset_realloc(256, 512, 4, 0);
 320     test_aligned_offset_realloc(256, 128, 4, 0);
 321     test_aligned_offset_realloc(256, 512, 8, 0);
 322     test_aligned_offset_realloc(256, 128, 8, 0);
 323     test_aligned_offset_realloc(256, 512, 16, 0);
 324     test_aligned_offset_realloc(256, 128, 16, 0);
 325     test_aligned_offset_realloc(256, 512, 32, 0);
 326     test_aligned_offset_realloc(256, 128, 32, 0);
 327     test_aligned_offset_realloc(256, 512, 64, 0);
 328     test_aligned_offset_realloc(256, 128, 64, 0);
 329
 330     test_aligned_offset_realloc(256, 512, 0, 4);
 331     test_aligned_offset_realloc(256, 128, 0, 4);
 332     test_aligned_offset_realloc(256, 512, 4, 4);
 333     test_aligned_offset_realloc(256, 128, 4, 4);
 334     test_aligned_offset_realloc(256, 512, 8, 4);
 335     test_aligned_offset_realloc(256, 128, 8, 4);
 336     test_aligned_offset_realloc(256, 512, 16, 4);
 337     test_aligned_offset_realloc(256, 128, 16, 4);
 338     test_aligned_offset_realloc(256, 512, 32, 4);
 339     test_aligned_offset_realloc(256, 128, 32, 4);
 340     test_aligned_offset_realloc(256, 512, 64, 4);
 341     test_aligned_offset_realloc(256, 128, 64, 4);
 342
 343     test_aligned_offset_realloc(256, 512, 0, 8);
 344     test_aligned_offset_realloc(256, 128, 0, 8);
 345     test_aligned_offset_realloc(256, 512, 4, 8);
 346     test_aligned_offset_realloc(256, 128, 4, 8);
 347     test_aligned_offset_realloc(256, 512, 8, 8);
 348     test_aligned_offset_realloc(256, 128, 8, 8);
 349     test_aligned_offset_realloc(256, 512, 16, 8);
 350     test_aligned_offset_realloc(256, 128, 16, 8);
 351     test_aligned_offset_realloc(256, 512, 32, 8);
 352     test_aligned_offset_realloc(256, 128, 32, 8);
 353     test_aligned_offset_realloc(256, 512, 64, 8);
 354     test_aligned_offset_realloc(256, 128, 64, 8);
 355
 356     test_aligned_offset_realloc(256, 512, 0, 16);
 357     test_aligned_offset_realloc(256, 128, 0, 16);
 358     test_aligned_offset_realloc(256, 512, 4, 16);
 359     test_aligned_offset_realloc(256, 128, 4, 16);
 360     test_aligned_offset_realloc(256, 512, 8, 16);
 361     test_aligned_offset_realloc(256, 128, 8, 16);
 362     test_aligned_offset_realloc(256, 512, 16, 16);
 363     test_aligned_offset_realloc(256, 128, 16, 16);
 364     test_aligned_offset_realloc(256, 512, 32, 16);
 365     test_aligned_offset_realloc(256, 128, 32, 16);
 366     test_aligned_offset_realloc(256, 512, 64, 16);
 367     test_aligned_offset_realloc(256, 128, 64, 16);
 368
 369     test_aligned_offset_realloc(256, 512, 0, 32);
 370     test_aligned_offset_realloc(256, 128, 0, 32);
 371     test_aligned_offset_realloc(256, 512, 4, 32);
 372     test_aligned_offset_realloc(256, 128, 4, 32);
 373     test_aligned_offset_realloc(256, 512, 8, 32);
 374     test_aligned_offset_realloc(256, 128, 8, 32);
 375     test_aligned_offset_realloc(256, 512, 16, 32);
 376     test_aligned_offset_realloc(256, 128, 16, 32);
 377     test_aligned_offset_realloc(256, 512, 32, 32);
 378     test_aligned_offset_realloc(256, 128, 32, 32);
 379     test_aligned_offset_realloc(256, 512, 64, 32);
 380     test_aligned_offset_realloc(256, 128, 64, 32);
 381
 382     test_aligned_offset_realloc(256, 512, 0, 64);
 383     test_aligned_offset_realloc(256, 128, 0, 64);
 384     test_aligned_offset_realloc(256, 512, 4, 64);
 385     test_aligned_offset_realloc(256, 128, 4, 64);
 386     test_aligned_offset_realloc(256, 512, 8, 64);
 387     test_aligned_offset_realloc(256, 128, 8, 64);
 388     test_aligned_offset_realloc(256, 512, 16, 64);
 389     test_aligned_offset_realloc(256, 128, 16, 64);
 390     test_aligned_offset_realloc(256, 512, 32, 64);
 391     test_aligned_offset_realloc(256, 128, 32, 64);
 392     test_aligned_offset_realloc(256, 512, 64, 64);
 393     test_aligned_offset_realloc(256, 128, 64, 64);
 394
 395     test_aligned_offset_realloc(256, 512, 0, 96);
 396     test_aligned_offset_realloc(256, 128, 0, 96);
 397     test_aligned_offset_realloc(256, 512, 4, 96);
 398     test_aligned_offset_realloc(256, 128, 4, 96);
 399     test_aligned_offset_realloc(256, 512, 8, 96);
 400     test_aligned_offset_realloc(256, 128, 8, 96);
 401     test_aligned_offset_realloc(256, 512, 16, 96);
 402     test_aligned_offset_realloc(256, 128, 16, 96);
 403     test_aligned_offset_realloc(256, 512, 32, 96);
 404     test_aligned_offset_realloc(256, 128, 32, 96);
 405     test_aligned_offset_realloc(256, 512, 64, 96);
 406     test_aligned_offset_realloc(256, 128, 64, 96);
 407
 408     test_aligned_offset_realloc(256, 512, 0, 112);
 409     test_aligned_offset_realloc(256, 128, 0, 112);
 410     test_aligned_offset_realloc(256, 512, 4, 112);
 411     test_aligned_offset_realloc(256, 128, 4, 112);
 412     test_aligned_offset_realloc(256, 512, 8, 112);
 413     test_aligned_offset_realloc(256, 128, 8, 112);
 414     test_aligned_offset_realloc(256, 512, 16, 112);
 415     test_aligned_offset_realloc(256, 128, 16, 112);
 416     test_aligned_offset_realloc(256, 512, 32, 112);
 417     test_aligned_offset_realloc(256, 128, 32, 112);
 418     test_aligned_offset_realloc(256, 512, 64, 112);
 419     test_aligned_offset_realloc(256, 128, 64, 112);
 420 }
 421
 422 static void test_sbheap(void)
 423 {
 424     void *mem;
 425     int threshold;
 426
 427     if(sizeof(void*) == 8) {
 428         ok(!_set_sbh_threshold(0), "_set_sbh_threshold succeeded\n");
 429         ok(!_set_sbh_threshold(1000), "_set_sbh_threshold succeeded\n");
 430         return;
 431     }
 432
 433     mem = malloc(1);
 434     ok(mem != NULL, "malloc failed\n");
 435
 436     ok(_set_sbh_threshold(1), "_set_sbh_threshold failed\n");
 437     threshold = _get_sbh_threshold();
 438     ok(threshold == 16, "threshold = %d\n", threshold);
 439
 440     ok(_set_sbh_threshold(8), "_set_sbh_threshold failed\n");
 441     threshold = _get_sbh_threshold();
 442     ok(threshold == 16, "threshold = %d\n", threshold);
 443
 444     ok(_set_sbh_threshold(1000), "_set_sbh_threshold failed\n");
 445     threshold = _get_sbh_threshold();
 446     ok(threshold == 1008, "threshold = %d\n", threshold);
 447
 448     free(mem);
 449
 450     mem = malloc(1);
 451     ok(mem != NULL, "malloc failed\n");
 452     ok(!((UINT_PTR)mem & 0xf), "incorrect alignment (%p)\n", mem);
 453
 454     mem = realloc(mem, 10);
 455     ok(mem != NULL, "realloc failed\n");
 456     ok(!((UINT_PTR)mem & 0xf), "incorrect alignment (%p)\n", mem);
 457
 458     ok(_set_sbh_threshold(0), "_set_sbh_threshold failed\n");
 459     threshold = _get_sbh_threshold();
 460     ok(threshold == 0, "threshold = %d\n", threshold);
 461
 462     free(mem);
 463 }
 464
 465 static void test_calloc(void)
 466 {
 467     /* use function pointer to bypass gcc builtin */
 468     void *(__cdecl *p_calloc)(size_t, size_t);
 469     void *ptr;
 470
 471     p_calloc = (void *)GetProcAddress( GetModuleHandleA("msvcrt.dll"), "calloc");
 472
 473     ptr = p_calloc(1, 0);
 474     ok(ptr != NULL, "got %p\n", ptr);
 475     free(ptr);
 476
 477     ptr = p_calloc(0, 0);
 478     ok(ptr != NULL, "got %p\n", ptr);
 479     free(ptr);
 480
 481     ptr = p_calloc(0, 1);
 482     ok(ptr != NULL, "got %p\n", ptr);
 483     free(ptr);
 484
 485     errno = 0;
 486     ptr = p_calloc(~(size_t)0 / 2, ~(size_t)0 / 2);
 487     ok(ptr == NULL || broken(ptr != NULL) /* winxp sp0 */, "got %p\n", ptr);
 488     ok(errno == ENOMEM || broken(errno == 0) /* winxp, win2k3 */, "got errno %d\n", errno);
 489     free(ptr);
 490 }
 491
 492 START_TEST(heap)
 493 {
 494     void *mem;
 495
 496     mem = malloc(0);
 497     ok(mem != NULL, "memory not allocated for size 0\n");
 498     free(mem);
 499
 500     mem = realloc(NULL, 10);
 501     ok(mem != NULL, "memory not allocated\n");
 502
 503     mem = realloc(mem, 20);
 504     ok(mem != NULL, "memory not reallocated\n");
 505
 506     mem = realloc(mem, 0);
 507     ok(mem == NULL, "memory not freed\n");
 508
 509     mem = realloc(NULL, 0);
 510     ok(mem != NULL, "memory not (re)allocated for size 0\n");
 511
 512     free(mem);
 513
 514     test_aligned();
 515     test_sbheap();
 516     test_calloc();
 517 }