1*70cbc6dbSSebastian Poeplau // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2*70cbc6dbSSebastian Poeplau // See https://llvm.org/LICENSE.txt for license information.
3*70cbc6dbSSebastian Poeplau // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4*70cbc6dbSSebastian Poeplau 
5*70cbc6dbSSebastian Poeplau // Stack overflow test for a fuzzer. The fuzzer must find the string "Hi" and
6*70cbc6dbSSebastian Poeplau // cause a stack overflow.
7*70cbc6dbSSebastian Poeplau #include <cstddef>
8*70cbc6dbSSebastian Poeplau #include <cstdint>
9*70cbc6dbSSebastian Poeplau 
10*70cbc6dbSSebastian Poeplau volatile int x;
11*70cbc6dbSSebastian Poeplau volatile int y = 1;
12*70cbc6dbSSebastian Poeplau 
13*70cbc6dbSSebastian Poeplau int infinite_recursion(char *p) {
14*70cbc6dbSSebastian Poeplau   char *buf = nullptr;
15*70cbc6dbSSebastian Poeplau 
16*70cbc6dbSSebastian Poeplau   if (y)
17*70cbc6dbSSebastian Poeplau     infinite_recursion(buf);
18*70cbc6dbSSebastian Poeplau 
19*70cbc6dbSSebastian Poeplau   x = 1;
20*70cbc6dbSSebastian Poeplau }
21*70cbc6dbSSebastian Poeplau 
22*70cbc6dbSSebastian Poeplau extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
23*70cbc6dbSSebastian Poeplau   if (Size >= 2 && Data[0] == 'H' && Data[1] == 'i')
24*70cbc6dbSSebastian Poeplau     infinite_recursion(nullptr);
25*70cbc6dbSSebastian Poeplau   return 0;
26*70cbc6dbSSebastian Poeplau }
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