1 // This file is distributed under the University of Illinois Open Source
2 // License. See LICENSE.TXT for details.
3 
4 // A fuzz target with lots of edges.
5 #include <cstdint>
6 #include <cstdlib>
7 
8 static inline void break_optimization(const void *arg) {
9     __asm__ __volatile__("" : : "r" (arg) : "memory");
10 }
11 
12 #define A                                         \
13   do {                                            \
14     i++;                                          \
15     c++;                                          \
16     if (Data[(i + __LINE__) % Size] == (c % 256)) \
17       break_optimization(Data);                   \
18     else                                          \
19       break_optimization(0);                      \
20   } while (0)
21 
22 // for (int i = 0, n = Data[(__LINE__ - 1) % Size] % 16; i < n; i++)
23 
24 #define B do{A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; }while(0)
25 #define C do{B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; }while(0)
26 #define D do{C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; }while(0)
27 #define E do{D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; }while(0)
28 
29 volatile int sink;
30 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
31   if (!Size) return 0;
32   int c = 0;
33   int i = 0;
34   D;
35   return 0;
36 }
37 
38