1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// RUN: %clangxx_asan -fexceptions -O %s -o %t && %run %t
//
// Test __sanitizer_annotate_contiguous_container.
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <sanitizer/asan_interface.h>
void TestContainer(size_t capacity) {
char *beg = new char[capacity];
char *end = beg + capacity;
char *mid = beg + capacity;
char *old_mid = 0;
for (int i = 0; i < 10000; i++) {
size_t size = rand() % (capacity + 1);
assert(size <= capacity);
old_mid = mid;
mid = beg + size;
__sanitizer_annotate_contiguous_container(beg, end, old_mid, mid);
for (size_t idx = 0; idx < size; idx++)
assert(!__asan_address_is_poisoned(beg + idx));
for (size_t idx = size; idx < capacity; idx++)
assert(__asan_address_is_poisoned(beg + idx));
assert(__sanitizer_verify_contiguous_container(beg, mid, end));
assert(NULL ==
__sanitizer_contiguous_container_find_bad_address(beg, mid, end));
if (mid != beg) {
assert(!__sanitizer_verify_contiguous_container(beg, mid - 1, end));
assert(mid - 1 == __sanitizer_contiguous_container_find_bad_address(
beg, mid - 1, end));
}
if (mid != end) {
assert(!__sanitizer_verify_contiguous_container(beg, mid + 1, end));
assert(mid == __sanitizer_contiguous_container_find_bad_address(
beg, mid + 1, end));
}
}
// Don't forget to unpoison the whole thing before destroying/reallocating.
__sanitizer_annotate_contiguous_container(beg, end, mid, end);
for (size_t idx = 0; idx < capacity; idx++)
assert(!__asan_address_is_poisoned(beg + idx));
delete[] beg;
}
__attribute__((noinline))
void Throw() { throw 1; }
__attribute__((noinline))
void ThrowAndCatch() {
try {
Throw();
} catch(...) {
}
}
void TestThrow() {
char x[32];
__sanitizer_annotate_contiguous_container(x, x + 32, x + 32, x + 14);
assert(!__asan_address_is_poisoned(x + 13));
assert(__asan_address_is_poisoned(x + 14));
ThrowAndCatch();
assert(!__asan_address_is_poisoned(x + 13));
assert(!__asan_address_is_poisoned(x + 14));
__sanitizer_annotate_contiguous_container(x, x + 32, x + 14, x + 32);
assert(!__asan_address_is_poisoned(x + 13));
assert(!__asan_address_is_poisoned(x + 14));
}
int main(int argc, char **argv) {
int n = argc == 1 ? 128 : atoi(argv[1]);
for (int i = 0; i <= n; i++)
TestContainer(i);
TestThrow();
}
|
