1 // ASan interceptor can be accessed with __interceptor_ prefix. 2 3 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s 4 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s 5 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s 6 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s 7 #include <stdlib.h> 8 #include <stdio.h> 9 #include <unistd.h> 10 11 extern "C" void *__interceptor_malloc(size_t size); 12 extern "C" void *malloc(size_t size) { 13 write(2, "malloc call\n", sizeof("malloc call\n") - 1); 14 return __interceptor_malloc(size); 15 } 16 17 int main() { 18 char *x = (char*)malloc(10 * sizeof(char)); 19 free(x); 20 return (int)strtol(x, 0, 10); 21 // CHECK: malloc call 22 // CHECK: heap-use-after-free 23 } 24
