compiler-rt/test/fuzzer/NullDerefOnEmptyTest.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 empty string.
   6 #include <cstddef>
   7 #include <cstdint>
   8 #include <cstdlib>
   9 #include <iostream>
  10
  11 static volatile int *Null = 0;
  12
  13 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  14   if (Size == 0) {
  15     std::cout << "Found the target, dereferencing NULL\n";
  16     *Null = 1;
  17   }
  18   return 0;
  19 }
  20