1 // Checks that the ASan debugging API for getting report information
2 // returns correct values.
3 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
4
5 #include <sanitizer/asan_interface.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8
main()9 int main() {
10 // Disable stderr buffering. Needed on Windows.
11 setvbuf(stderr, NULL, _IONBF, 0);
12
13 char *heap_ptr = (char *)malloc(10);
14 free(heap_ptr);
15 int present = __asan_report_present();
16 fprintf(stderr, "%s\n", (present == 0) ? "no report" : "");
17 // CHECK: no report
18 heap_ptr[0] = 'A'; // BOOM
19 return 0;
20 }
21
22 // If we use %p with MSVC, it comes out all upper case. Use %08x to get
23 // lowercase hex.
24 #ifdef _MSC_VER
25 # ifdef _WIN64
26 # define PTR_FMT "0x%08llx"
27 # else
28 # define PTR_FMT "0x%08x"
29 # endif
30 #else
31 # define PTR_FMT "%p"
32 #endif
33
__asan_on_error()34 void __asan_on_error() {
35 int present = __asan_report_present();
36 void *pc = __asan_get_report_pc();
37 void *bp = __asan_get_report_bp();
38 void *sp = __asan_get_report_sp();
39 void *addr = __asan_get_report_address();
40 int is_write = __asan_get_report_access_type();
41 size_t access_size = __asan_get_report_access_size();
42 const char *description = __asan_get_report_description();
43
44 fprintf(stderr, "%s\n", (present == 1) ? "report" : "");
45 // CHECK: report
46 fprintf(stderr, "pc: " PTR_FMT "\n", pc);
47 // CHECK: pc: 0x[[PC:[0-9a-f]+]]
48 fprintf(stderr, "bp: " PTR_FMT "\n", bp);
49 // CHECK: bp: 0x[[BP:[0-9a-f]+]]
50 fprintf(stderr, "sp: " PTR_FMT "\n", sp);
51 // CHECK: sp: 0x[[SP:[0-9a-f]+]]
52 fprintf(stderr, "addr: " PTR_FMT "\n", addr);
53 // CHECK: addr: 0x[[ADDR:[0-9a-f]+]]
54 fprintf(stderr, "type: %s\n", (is_write ? "write" : "read"));
55 // CHECK: type: write
56 fprintf(stderr, "access_size: %ld\n", access_size);
57 // CHECK: access_size: 1
58 fprintf(stderr, "description: %s\n", description);
59 // CHECK: description: heap-use-after-free
60 }
61
62 // CHECK: AddressSanitizer: heap-use-after-free on address {{0x0*}}[[ADDR]] at pc {{0x0*}}[[PC]] bp {{0x0*}}[[BP]] sp {{0x0*}}[[SP]]
63 // CHECK: WRITE of size 1 at {{0x0*}}[[ADDR]] thread T0
64