compiler-rt/test/fuzzer/OutOfMemoryTest.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.
   6 #include <assert.h>
   7 #include <cstddef>
   8 #include <cstdint>
   9 #include <cstdlib>
  10 #include <cstring>
  11 #include <iostream>
  12 #include <thread>
  13
  14 static char *volatile SinkPtr;
  15
  16 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  17   if (Size > 0 && Data[0] == 'H') {
  18     if (Size > 1 && Data[1] == 'i') {
  19       if (Size > 2 && Data[2] == '!') {
  20         while (true) {
  21           size_t kSize = 1 << 28;
  22           char *p = new char[kSize];
  23           memset(p, 0, kSize);
  24           SinkPtr = p;
  25           std::this_thread::sleep_for(std::chrono::seconds(1));
  26         }
  27       }
  28     }
  29   }
  30   return 0;
  31 }
  32