compiler-rt/test/fuzzer/OneHugeAllocTest.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 // Tests OOM handling when there is a single large allocation.
   6 #include <assert.h>
   7 #include <cstddef>
   8 #include <cstdint>
   9 #include <cstdlib>
  10 #include <cstring>
  11 #include <iostream>
  12
  13 static volatile char *SinkPtr;
  14
  15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  16   if (Size > 0 && Data[0] == 'H') {
  17     if (Size > 1 && Data[1] == 'i') {
  18       if (Size > 2 && Data[2] == '!') {
  19         size_t kSize = (size_t)1 << 31;
  20         char *p = new char[kSize];
  21         memset(p, 0, kSize);
  22         SinkPtr = p;
  23         delete [] p;
  24       }
  25     }
  26   }
  27   return 0;
  28 }
  29