1*2946cd70SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2*2946cd70SChandler Carruth // See https://llvm.org/LICENSE.txt for license information.
3*2946cd70SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
410ab2aceSGeorge Karpenkov
510ab2aceSGeorge Karpenkov // Threaded test for a fuzzer. The fuzzer should not crash.
610ab2aceSGeorge Karpenkov #include <assert.h>
710ab2aceSGeorge Karpenkov #include <cstddef>
810ab2aceSGeorge Karpenkov #include <cstdint>
910ab2aceSGeorge Karpenkov #include <cstring>
1010ab2aceSGeorge Karpenkov #include <thread>
1110ab2aceSGeorge Karpenkov
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)1210ab2aceSGeorge Karpenkov extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
1310ab2aceSGeorge Karpenkov if (Size < 8) return 0;
1410ab2aceSGeorge Karpenkov assert(Data);
1510ab2aceSGeorge Karpenkov auto C = [&] {
1610ab2aceSGeorge Karpenkov size_t Res = 0;
1710ab2aceSGeorge Karpenkov for (size_t i = 0; i < Size / 2; i++)
1810ab2aceSGeorge Karpenkov Res += memcmp(Data, Data + Size / 2, 4);
1910ab2aceSGeorge Karpenkov return Res;
2010ab2aceSGeorge Karpenkov };
2110ab2aceSGeorge Karpenkov std::thread T[] = {std::thread(C), std::thread(C), std::thread(C),
2210ab2aceSGeorge Karpenkov std::thread(C), std::thread(C), std::thread(C)};
2310ab2aceSGeorge Karpenkov for (auto &X : T)
2410ab2aceSGeorge Karpenkov X.join();
2510ab2aceSGeorge Karpenkov return 0;
2610ab2aceSGeorge Karpenkov }
2710ab2aceSGeorge Karpenkov
28