compiler-rt/test/fuzzer/IntegerOverflowTest.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 "Hi" and cause an
   6 // integer overflow.
   7 #include <cstddef>
   8 #include <cstdint>
   9
  10 static int Val = 1 << 30;
  11
  12 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  13   if (Size >= 2 && Data[0] == 'H' && Data[1] == 'i')
  14     Val += Val;
  15   return 0;
  16 }
  17