1673dc3d4SNico Weber // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
2673dc3d4SNico Weber
3673dc3d4SNico Weber #include <sanitizer/asan_interface.h>
4673dc3d4SNico Weber #include <stdio.h>
5673dc3d4SNico Weber #include <stdlib.h>
6673dc3d4SNico Weber
7673dc3d4SNico Weber // FIXME: Doesn't work with DLLs
8673dc3d4SNico Weber // XFAIL: win32-dynamic-asan
9673dc3d4SNico Weber
10673dc3d4SNico Weber // If we use %p with MSVC, it comes out all upper case. Use %08x to get
11673dc3d4SNico Weber // lowercase hex.
12673dc3d4SNico Weber #ifdef _MSC_VER
13673dc3d4SNico Weber # ifdef _WIN64
14673dc3d4SNico Weber # define PTR_FMT "0x%08llx"
15673dc3d4SNico Weber # else
16673dc3d4SNico Weber # define PTR_FMT "0x%08x"
17673dc3d4SNico Weber # endif
18673dc3d4SNico Weber // Solaris libc omits the leading 0x.
19673dc3d4SNico Weber #elif defined(__sun__) && defined(__svr4__)
20673dc3d4SNico Weber # define PTR_FMT "0x%p"
21673dc3d4SNico Weber #else
22673dc3d4SNico Weber # define PTR_FMT "%p"
23673dc3d4SNico Weber #endif
24673dc3d4SNico Weber
25673dc3d4SNico Weber char *heap_ptr;
26673dc3d4SNico Weber
main()27673dc3d4SNico Weber int main() {
28673dc3d4SNico Weber // Disable stderr buffering. Needed on Windows.
29673dc3d4SNico Weber setvbuf(stderr, NULL, _IONBF, 0);
30673dc3d4SNico Weber
31673dc3d4SNico Weber heap_ptr = (char *)malloc(10);
32673dc3d4SNico Weber fprintf(stderr, "heap_ptr: " PTR_FMT "\n", heap_ptr);
33673dc3d4SNico Weber // CHECK: heap_ptr: 0x[[ADDR:[0-9a-f]+]]
34673dc3d4SNico Weber
35673dc3d4SNico Weber free(heap_ptr);
36673dc3d4SNico Weber free(heap_ptr); // BOOM
37673dc3d4SNico Weber return 0;
38673dc3d4SNico Weber }
39673dc3d4SNico Weber
40*0aefc946SRoy Sundahl // Required for dyld macOS 12.0+
41*0aefc946SRoy Sundahl #if (__APPLE__)
42*0aefc946SRoy Sundahl __attribute__((weak))
43*0aefc946SRoy Sundahl #endif
44*0aefc946SRoy Sundahl extern "C" void
__asan_on_error()45*0aefc946SRoy Sundahl __asan_on_error() {
46673dc3d4SNico Weber int present = __asan_report_present();
47673dc3d4SNico Weber void *addr = __asan_get_report_address();
48673dc3d4SNico Weber const char *description = __asan_get_report_description();
49673dc3d4SNico Weber
50673dc3d4SNico Weber fprintf(stderr, "%s\n", (present == 1) ? "report present" : "");
51673dc3d4SNico Weber // CHECK: report present
52673dc3d4SNico Weber fprintf(stderr, "addr: " PTR_FMT "\n", addr);
53673dc3d4SNico Weber // CHECK: addr: {{0x0*}}[[ADDR]]
54673dc3d4SNico Weber fprintf(stderr, "description: %s\n", description);
55673dc3d4SNico Weber // CHECK: description: double-free
56673dc3d4SNico Weber }
57673dc3d4SNico Weber
58673dc3d4SNico Weber // CHECK: AddressSanitizer: attempting double-free on {{0x0*}}[[ADDR]] in thread T0
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