compiler-rt/test/fuzzer/SingleStrncmpTest.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 a particular string.
   6 #include <cstdint>
   7 #include <cstdio>
   8 #include <cstdlib>
   9 #include <cstring>
  10
  11 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  12   const char *S = (const char*)Data;
  13   volatile auto Strncmp = &(strncmp);   // Make sure strncmp is not inlined.
  14   if (Size >= 6 && !Strncmp(S, "qwerty", 6)) {
  15     fprintf(stderr, "BINGO\n");
  16     exit(1);
  17   }
  18   return 0;
  19 }