27 lines · cpp
1// Test max_redzone runtime option.2 3// RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&14// RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&15// RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&16// RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&17 8#include <stdio.h>9#include <stdlib.h>10#include <stdint.h>11#include <sanitizer/allocator_interface.h>12 13int main(int argc, char **argv) {14 if (argc < 2)15 return 1;16 bool large_redzone = atoi(argv[1]);17 size_t before = __sanitizer_get_heap_size();18 void *pp[10000];19 for (int i = 0; i < 10000; ++i)20 pp[i] = malloc(4096 - 64);21 size_t after = __sanitizer_get_heap_size();22 for (int i = 0; i < 10000; ++i)23 free(pp[i]);24 size_t diff = after - before;25 return !(large_redzone ? diff > 46000000 : diff < 46000000);26}27