1 // Test max_redzone runtime option. 2 3 // RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1 4 // RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1 5 // RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1 6 // RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1 7 8 #include <stdio.h> 9 #include <stdlib.h> 10 #include <stdint.h> 11 #include <sanitizer/allocator_interface.h> 12 13 int 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
