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1// Test malloc alignment.2// RUN: %clang_hwasan -mllvm -hwasan-globals=0 %s -o %t3// RUN: %run %t4 5#include <assert.h>6#include <sanitizer/allocator_interface.h>7#include <sanitizer/hwasan_interface.h>8#include <stdio.h>9#include <stdlib.h>10 11static const size_t sizes[] = {12 1, 3, 7, 8, 9, 16, 17, 31, 32, 33,13 63, 64, 65, 127, 128, 129, 511, 512, 513, 2047,14 2048, 2049, 65535, 65536, 65537, 1048575, 1048576, 1048577};15static const size_t alignments[] = {8, 16, 64, 256, 1024, 4096, 65536, 131072};16 17__attribute__((no_sanitize("hwaddress"))) int main() {18 for (unsigned i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {19 for (unsigned j = 0; j < sizeof(alignments) / sizeof(*alignments); ++j) {20 size_t size = sizes[i];21 size_t alignment = alignments[j];22 fprintf(stderr, "size %zu, alignment %zu (0x%zx)\n", size, alignment,23 alignment);24 const int cnt = 10;25 void *ptrs[cnt];26 for (int k = 0; k < cnt; ++k) {27 int res = posix_memalign(&ptrs[k], alignment, size);28 assert(res == 0);29 fprintf(stderr, "... addr 0x%zx\n", (size_t)ptrs[k]);30 assert(((size_t)ptrs[k] & (alignment - 1)) == 0);31 }32 for (int k = 0; k < cnt; ++k)33 free(ptrs[k]);34 }35 }36 return 0;37}38