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
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Simple test for a fuzzer. The fuzzer must find several narrow ranges.
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
extern int AllLines[];
bool PrintOnce(int Line) {
if (!AllLines[Line])
fprintf(stderr, "Seen line %d\n", Line);
AllLines[Line] = 1;
return true;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size != 24) return 0;
uint64_t x = 0;
int64_t y = 0;
int32_t z = 0;
uint32_t a = 0;
memcpy(&x, Data, 8); // 8
memcpy(&y, Data + 8, 8); // 16
memcpy(&z, Data + 16, sizeof(z)); // 20
memcpy(&a, Data + 20, sizeof(a)); // 24
const bool k32bit = sizeof(void*) == 4;
if ((k32bit || x > 1234567890) && PrintOnce(__LINE__) &&
(k32bit || x < 1234567895) && PrintOnce(__LINE__) &&
a == 0x4242 && PrintOnce(__LINE__) &&
(k32bit || y >= 987654321) && PrintOnce(__LINE__) &&
(k32bit || y <= 987654325) && PrintOnce(__LINE__) &&
z < -10000 && PrintOnce(__LINE__) &&
z >= -10005 && PrintOnce(__LINE__) &&
z != -10003 && PrintOnce(__LINE__) &&
true) {
fprintf(stderr, "BINGO; Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n",
Size, x, y, z, a);
exit(1);
}
return 0;
}
int AllLines[__LINE__ + 1]; // Must be the last line.
|