| // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
| |
| #include <sanitizer/asan_interface.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| // FIXME: Doesn't work with DLLs |
| // XFAIL: win32-dynamic-asan |
| |
| // If we use %p with MSVC, it comes out all upper case. Use %08x to get |
| // lowercase hex. |
| #ifdef _MSC_VER |
| # ifdef _WIN64 |
| # define PTR_FMT "0x%08llx" |
| # else |
| # define PTR_FMT "0x%08x" |
| # endif |
| // Solaris libc omits the leading 0x. |
| #elif defined(__sun__) && defined(__svr4__) |
| # define PTR_FMT "0x%p" |
| #else |
| # define PTR_FMT "%p" |
| #endif |
| |
| char *heap_ptr; |
| |
| int main() { |
| // Disable stderr buffering. Needed on Windows. |
| setvbuf(stderr, NULL, _IONBF, 0); |
| |
| heap_ptr = (char *)malloc(10); |
| fprintf(stderr, "heap_ptr: " PTR_FMT "\n", heap_ptr); |
| // CHECK: heap_ptr: 0x[[ADDR:[0-9a-f]+]] |
| |
| free(heap_ptr); |
| free(heap_ptr); // BOOM |
| return 0; |
| } |
| |
| void __asan_on_error() { |
| int present = __asan_report_present(); |
| void *addr = __asan_get_report_address(); |
| const char *description = __asan_get_report_description(); |
| |
| fprintf(stderr, "%s\n", (present == 1) ? "report present" : ""); |
| // CHECK: report present |
| fprintf(stderr, "addr: " PTR_FMT "\n", addr); |
| // CHECK: addr: {{0x0*}}[[ADDR]] |
| fprintf(stderr, "description: %s\n", description); |
| // CHECK: description: double-free |
| } |
| |
| // CHECK: AddressSanitizer: attempting double-free on {{0x0*}}[[ADDR]] in thread T0 |