1673dc3d4SNico Weber // Checks that the ASan debugging API for getting report information 2673dc3d4SNico Weber // returns correct values. 3673dc3d4SNico Weber // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s 4673dc3d4SNico Weber 5673dc3d4SNico Weber #include <sanitizer/asan_interface.h> 6673dc3d4SNico Weber #include <stdio.h> 7673dc3d4SNico Weber #include <stdlib.h> 8673dc3d4SNico Weber 9673dc3d4SNico Weber int main() { 10673dc3d4SNico Weber // Disable stderr buffering. Needed on Windows. 11673dc3d4SNico Weber setvbuf(stderr, NULL, _IONBF, 0); 12673dc3d4SNico Weber 13673dc3d4SNico Weber char *heap_ptr = (char *)malloc(10); 14673dc3d4SNico Weber free(heap_ptr); 15673dc3d4SNico Weber int present = __asan_report_present(); 16673dc3d4SNico Weber fprintf(stderr, "%s\n", (present == 0) ? "no report" : ""); 17673dc3d4SNico Weber // CHECK: no report 18673dc3d4SNico Weber heap_ptr[0] = 'A'; // BOOM 19673dc3d4SNico Weber return 0; 20673dc3d4SNico Weber } 21673dc3d4SNico Weber 22*9faa623dSMartin Storsjö // If we use %p with MS CRTs, it comes out all upper case. Use %08x to get 23673dc3d4SNico Weber // lowercase hex. 24*9faa623dSMartin Storsjö #ifdef _WIN32 25673dc3d4SNico Weber # ifdef _WIN64 26673dc3d4SNico Weber # define PTR_FMT "0x%08llx" 27673dc3d4SNico Weber # else 28673dc3d4SNico Weber # define PTR_FMT "0x%08x" 29673dc3d4SNico Weber # endif 30673dc3d4SNico Weber // Solaris libc omits the leading 0x. 31673dc3d4SNico Weber #elif defined(__sun__) && defined(__svr4__) 32673dc3d4SNico Weber # define PTR_FMT "0x%p" 33673dc3d4SNico Weber #else 34673dc3d4SNico Weber # define PTR_FMT "%p" 35673dc3d4SNico Weber #endif 36673dc3d4SNico Weber 370aefc946SRoy Sundahl // Required for dyld macOS 12.0+ 380aefc946SRoy Sundahl #if (__APPLE__) 390aefc946SRoy Sundahl __attribute__((weak)) 400aefc946SRoy Sundahl #endif 410aefc946SRoy Sundahl extern "C" void 420aefc946SRoy Sundahl __asan_on_error() { 43673dc3d4SNico Weber int present = __asan_report_present(); 44673dc3d4SNico Weber void *pc = __asan_get_report_pc(); 45673dc3d4SNico Weber void *bp = __asan_get_report_bp(); 46673dc3d4SNico Weber void *sp = __asan_get_report_sp(); 47673dc3d4SNico Weber void *addr = __asan_get_report_address(); 48673dc3d4SNico Weber int is_write = __asan_get_report_access_type(); 49673dc3d4SNico Weber size_t access_size = __asan_get_report_access_size(); 50673dc3d4SNico Weber const char *description = __asan_get_report_description(); 51673dc3d4SNico Weber 52673dc3d4SNico Weber fprintf(stderr, "%s\n", (present == 1) ? "report" : ""); 53673dc3d4SNico Weber // CHECK: report 54673dc3d4SNico Weber fprintf(stderr, "pc: " PTR_FMT "\n", pc); 55673dc3d4SNico Weber // CHECK: pc: 0x[[PC:[0-9a-f]+]] 56673dc3d4SNico Weber fprintf(stderr, "bp: " PTR_FMT "\n", bp); 57673dc3d4SNico Weber // CHECK: bp: 0x[[BP:[0-9a-f]+]] 58673dc3d4SNico Weber fprintf(stderr, "sp: " PTR_FMT "\n", sp); 59673dc3d4SNico Weber // CHECK: sp: 0x[[SP:[0-9a-f]+]] 60673dc3d4SNico Weber fprintf(stderr, "addr: " PTR_FMT "\n", addr); 61673dc3d4SNico Weber // CHECK: addr: 0x[[ADDR:[0-9a-f]+]] 62673dc3d4SNico Weber fprintf(stderr, "type: %s\n", (is_write ? "write" : "read")); 63673dc3d4SNico Weber // CHECK: type: write 64673dc3d4SNico Weber fprintf(stderr, "access_size: %ld\n", access_size); 65673dc3d4SNico Weber // CHECK: access_size: 1 66673dc3d4SNico Weber fprintf(stderr, "description: %s\n", description); 67673dc3d4SNico Weber // CHECK: description: heap-use-after-free 68673dc3d4SNico Weber } 69673dc3d4SNico Weber 70673dc3d4SNico Weber // CHECK: AddressSanitizer: heap-use-after-free on address {{0x0*}}[[ADDR]] at pc {{0x0*}}[[PC]] bp {{0x0*}}[[BP]] sp {{0x0*}}[[SP]] 71673dc3d4SNico Weber // CHECK: WRITE of size 1 at {{0x0*}}[[ADDR]] thread T0 72