1*7c3d14c8STreehugger Robot // Test max_redzone runtime option. 2*7c3d14c8STreehugger Robot 3*7c3d14c8STreehugger Robot // RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1 4*7c3d14c8STreehugger Robot // RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1 5*7c3d14c8STreehugger Robot // RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1 6*7c3d14c8STreehugger Robot // RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1 7*7c3d14c8STreehugger Robot 8*7c3d14c8STreehugger Robot #include <stdio.h> 9*7c3d14c8STreehugger Robot #include <stdlib.h> 10*7c3d14c8STreehugger Robot #include <stdint.h> 11*7c3d14c8STreehugger Robot #include <sanitizer/allocator_interface.h> 12*7c3d14c8STreehugger Robot main(int argc,char ** argv)13*7c3d14c8STreehugger Robotint main(int argc, char **argv) { 14*7c3d14c8STreehugger Robot if (argc < 2) 15*7c3d14c8STreehugger Robot return 1; 16*7c3d14c8STreehugger Robot bool large_redzone = atoi(argv[1]); 17*7c3d14c8STreehugger Robot size_t before = __sanitizer_get_heap_size(); 18*7c3d14c8STreehugger Robot void *pp[10000]; 19*7c3d14c8STreehugger Robot for (int i = 0; i < 10000; ++i) 20*7c3d14c8STreehugger Robot pp[i] = malloc(4096 - 64); 21*7c3d14c8STreehugger Robot size_t after = __sanitizer_get_heap_size(); 22*7c3d14c8STreehugger Robot for (int i = 0; i < 10000; ++i) 23*7c3d14c8STreehugger Robot free(pp[i]); 24*7c3d14c8STreehugger Robot size_t diff = after - before; 25*7c3d14c8STreehugger Robot return !(large_redzone ? diff > 46000000 : diff < 46000000); 26*7c3d14c8STreehugger Robot } 27