170cbc6dbSSebastian Poeplau // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
270cbc6dbSSebastian Poeplau // See https://llvm.org/LICENSE.txt for license information.
370cbc6dbSSebastian Poeplau // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
470cbc6dbSSebastian Poeplau 
570cbc6dbSSebastian Poeplau // Stack overflow test for a fuzzer. The fuzzer must find the string "Hi" and
670cbc6dbSSebastian Poeplau // cause a stack overflow.
770cbc6dbSSebastian Poeplau #include <cstddef>
870cbc6dbSSebastian Poeplau #include <cstdint>
970cbc6dbSSebastian Poeplau 
1070cbc6dbSSebastian Poeplau volatile int x;
1170cbc6dbSSebastian Poeplau volatile int y = 1;
1270cbc6dbSSebastian Poeplau 
infinite_recursion(char * p)13*f0941449SMatt Morehouse void infinite_recursion(char *p) {
1470cbc6dbSSebastian Poeplau   char *buf = nullptr;
1570cbc6dbSSebastian Poeplau 
1670cbc6dbSSebastian Poeplau   if (y)
1770cbc6dbSSebastian Poeplau     infinite_recursion(buf);
1870cbc6dbSSebastian Poeplau 
1970cbc6dbSSebastian Poeplau   x = 1;
2070cbc6dbSSebastian Poeplau }
2170cbc6dbSSebastian Poeplau 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)2270cbc6dbSSebastian Poeplau extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
2370cbc6dbSSebastian Poeplau   if (Size >= 2 && Data[0] == 'H' && Data[1] == 'i')
2470cbc6dbSSebastian Poeplau     infinite_recursion(nullptr);
2570cbc6dbSSebastian Poeplau   return 0;
2670cbc6dbSSebastian Poeplau }
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