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173
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1 // Test malloc alignment.
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2 // RUN: %clang_hwasan -mllvm -hwasan-globals=0 %s -o %t
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3 // RUN: %run %t
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4
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5 #include <assert.h>
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6 #include <sanitizer/allocator_interface.h>
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7 #include <sanitizer/hwasan_interface.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10
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11 static const size_t sizes[] = {
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12 1, 3, 7, 8, 9, 16, 17, 31, 32, 33,
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13 63, 64, 65, 127, 128, 129, 511, 512, 513, 2047,
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14 2048, 2049, 65535, 65536, 65537, 1048575, 1048576, 1048577};
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15 static const size_t alignments[] = {8, 16, 64, 256, 1024, 4096, 65536, 131072};
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16
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17 __attribute__((no_sanitize("hwaddress"))) int main() {
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18 for (unsigned i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {
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19 for (unsigned j = 0; j < sizeof(alignments) / sizeof(*alignments); ++j) {
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20 size_t size = sizes[i];
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21 size_t alignment = alignments[j];
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22 fprintf(stderr, "size %zu, alignment %zu (0x%zx)\n", size, alignment,
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23 alignment);
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24 const int cnt = 10;
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25 void *ptrs[cnt];
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26 for (int k = 0; k < cnt; ++k) {
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27 int res = posix_memalign(&ptrs[k], alignment, size);
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28 assert(res == 0);
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29 fprintf(stderr, "... addr 0x%zx\n", (size_t)ptrs[k]);
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30 assert(((size_t)ptrs[k] & (alignment - 1)) == 0);
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31 }
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32 for (int k = 0; k < cnt; ++k)
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33 free(ptrs[k]);
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34 }
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35 }
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36 return 0;
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37 }
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