1// This file is distributed under the University of Illinois Open Source
2// License. See LICENSE.TXT for details.
3
4// Simple test for a fuzzer. The fuzzer must find several narrow ranges.
5#include <cstdint>
6#include <cstdlib>
7#include <cstring>
8#include <cstdio>
9
10extern int AllLines[];
11
12bool PrintOnce(int Line) {
13  if (!AllLines[Line])
14    fprintf(stderr, "Seen line %d\n", Line);
15  AllLines[Line] = 1;
16  return true;
17}
18
19extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
20  if (Size != 22) return 0;
21  uint64_t x = 0;
22  int64_t  y = 0;
23  int32_t z = 0;
24  uint16_t a = 0;
25  memcpy(&x, Data, 8);  // 8
26  memcpy(&y, Data + 8, 8);  // 16
27  memcpy(&z, Data + 16, sizeof(z));  // 20
28  memcpy(&a, Data + 20, sizeof(a));  // 22
29
30  if (x > 1234567890 && PrintOnce(__LINE__) &&
31      x < 1234567895 && PrintOnce(__LINE__) &&
32      a == 0x4242 && PrintOnce(__LINE__) &&
33      y >= 987654321 && PrintOnce(__LINE__) &&
34      y <= 987654325 && PrintOnce(__LINE__) &&
35      z < -10000 && PrintOnce(__LINE__) &&
36      z >= -10005 && PrintOnce(__LINE__) &&
37      z != -10003 && PrintOnce(__LINE__) &&
38      true) {
39    fprintf(stderr, "BINGO; Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n",
40            Size, x, y, z, a);
41    exit(1);
42  }
43  return 0;
44}
45
46int AllLines[__LINE__ + 1];  // Must be the last line.
47