| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |
| // See https://llvm.org/LICENSE.txt for license information. | |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // Tests that deadlocks do not occur when an OOM occurs during symbolization. | |
| #include <cassert> | |
| #include <cstdint> | |
| #include <cstdio> | |
| #include <cstdlib> | |
| #include <cstring> | |
| #include "Bingo.h" | |
| volatile unsigned Sink = 0; | |
| // Do not inline this function. We want to trigger NEW_FUNC symbolization when | |
| // libFuzzer finds this function. We use a macro to make the name as long | |
| // possible, hoping to increase the time spent in symbolization and increase the | |
| // chances of triggering a deadlock. | |
| __attribute__((noinline)) void BINGO() { | |
| // Busy work. Inserts a delay here so the deadlock is more likely to trigger. | |
| for (unsigned i = 0; i < 330000000; i++) Sink += i; | |
| } | |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { | |
| assert(Data); | |
| if (Size < 3) return 0; | |
| if (Data[0] == 'F' && | |
| Data[1] == 'U' && | |
| Data[2] == 'Z') | |
| BINGO(); | |
| return 0; | |
| } | |