xref: /aosp_15_r20/external/llvm/lib/Fuzzer/test/RepeatedMemcmp.cpp (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker // This file is distributed under the University of Illinois Open Source
2*9880d681SAndroid Build Coastguard Worker // License. See LICENSE.TXT for details.
3*9880d681SAndroid Build Coastguard Worker 
4*9880d681SAndroid Build Coastguard Worker 
5*9880d681SAndroid Build Coastguard Worker #include <cstring>
6*9880d681SAndroid Build Coastguard Worker #include <cstdint>
7*9880d681SAndroid Build Coastguard Worker #include <cstdio>
8*9880d681SAndroid Build Coastguard Worker #include <cstdlib>
9*9880d681SAndroid Build Coastguard Worker 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)10*9880d681SAndroid Build Coastguard Worker extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
11*9880d681SAndroid Build Coastguard Worker   int Matches = 0;
12*9880d681SAndroid Build Coastguard Worker   for (size_t i = 0; i + 2 < Size; i += 3) {
13*9880d681SAndroid Build Coastguard Worker     const char *Pat = i % 2 ? "foo" : "bar";
14*9880d681SAndroid Build Coastguard Worker     if (!memcmp(Data + i, Pat, 3))
15*9880d681SAndroid Build Coastguard Worker       Matches++;
16*9880d681SAndroid Build Coastguard Worker   }
17*9880d681SAndroid Build Coastguard Worker   if (Matches > 20) {
18*9880d681SAndroid Build Coastguard Worker     fprintf(stderr, "BINGO!\n");
19*9880d681SAndroid Build Coastguard Worker     exit(1);
20*9880d681SAndroid Build Coastguard Worker   }
21*9880d681SAndroid Build Coastguard Worker   return 0;
22*9880d681SAndroid Build Coastguard Worker }
23