compiler-rt/test/fuzzer/StackOverflowTest.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 // Stack overflow test for a fuzzer. The fuzzer must find the string "Hi" and
   6 // cause a stack overflow.
   7 #include <cstddef>
   8 #include <cstdint>
   9
  10 volatile int x;
  11 volatile int y = 1;
  12
  13 void infinite_recursion(char *p) {
  14   char *buf = nullptr;
  15
  16   if (y)
  17     infinite_recursion(buf);
  18
  19   x = 1;
  20 }
  21
  22 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  23   if (Size >= 2 && Data[0] == 'H' && Data[1] == 'i')
  24     infinite_recursion(nullptr);
  25   return 0;
  26 }