compiler-rt/test/fuzzer/FourIndependentBranchesTest.cpp

   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 // Simple test for a fuzzer. The fuzzer must find the string "FUZZ".
   6 #include <cstddef>
   7 #include <cstdint>
   8 #include <cstdlib>
   9 #include <iostream>
  10
  11 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  12   int bits = 0;
  13   if (Size > 0 && Data[0] == 'F') bits |= 1;
  14   if (Size > 1 && Data[1] == 'U') bits |= 2;
  15   if (Size > 2 && Data[2] == 'Z') bits |= 4;
  16   if (Size > 3 && Data[3] == 'Z') bits |= 8;
  17   if (bits == 15) {
  18     std::cerr <<  "BINGO!\n";
  19     exit(1);
  20   }
  21   return 0;
  22 }
  23