| 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, format: "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(memptr: &ptrs[k], alignment: alignment, size: size); |
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| 28 | assert(res == 0); |
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| 29 | fprintf(stderr, format: "... 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(ptr: 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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| 38 | |
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