1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2 // See https://llvm.org/LICENSE.txt for license information.
3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4 
5 // A fuzz target with lots of edges.
6 #include <cstdint>
7 #include <cstdlib>
8 
9 static inline void break_optimization(const void *arg) {
10     __asm__ __volatile__("" : : "r" (arg) : "memory");
11 }
12 
13 #define A                                         \
14   do {                                            \
15     i++;                                          \
16     c++;                                          \
17     if (Data[(i + __LINE__) % Size] == (c % 256)) \
18       break_optimization(Data);                   \
19     else                                          \
20       break_optimization(0);                      \
21   } while (0)
22 
23 // for (int i = 0, n = Data[(__LINE__ - 1) % Size] % 16; i < n; i++)
24 
25 #define B do{A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; A; }while(0)
26 #define C do{B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; B; }while(0)
27 #define D do{C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; C; }while(0)
28 #define E do{D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; D; }while(0)
29 
30 volatile int sink;
31 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
32   if (!Size) return 0;
33   int c = 0;
34   int i = 0;
35   D;
36   return 0;
37 }
38 
39