| // Test malloc alignment. |
| // RUN: %clang_hwasan -mllvm -hwasan-globals=0 %s -o %t |
| // RUN: %run %t |
| |
| #include <assert.h> |
| #include <sanitizer/allocator_interface.h> |
| #include <sanitizer/hwasan_interface.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| static const size_t sizes[] = { |
| 1, 3, 7, 8, 9, 16, 17, 31, 32, 33, |
| 63, 64, 65, 127, 128, 129, 511, 512, 513, 2047, |
| 2048, 2049, 65535, 65536, 65537, 1048575, 1048576, 1048577}; |
| static const size_t alignments[] = {8, 16, 64, 256, 1024, 4096, 65536, 131072}; |
| |
| __attribute__((no_sanitize("hwaddress"))) int main() { |
| for (unsigned i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { |
| for (unsigned j = 0; j < sizeof(alignments) / sizeof(*alignments); ++j) { |
| size_t size = sizes[i]; |
| size_t alignment = alignments[j]; |
| fprintf(stderr, "size %zu, alignment %zu (0x%zx)\n", size, alignment, |
| alignment); |
| const int cnt = 10; |
| void *ptrs[cnt]; |
| for (int k = 0; k < cnt; ++k) { |
| int res = posix_memalign(&ptrs[k], alignment, size); |
| assert(res == 0); |
| fprintf(stderr, "... addr 0x%zx\n", (size_t)ptrs[k]); |
| assert(((size_t)ptrs[k] & (alignment - 1)) == 0); |
| } |
| for (int k = 0; k < cnt; ++k) |
| free(ptrs[k]); |
| } |
| } |
| return 0; |
| } |