| // Copyright 2020 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // A fuzz target that triggers a signed integer overflow, which is undefined |
| // behavior and detected by UBSAN's signed-integer-overflow check. |
| |
| #include <cstddef> |
| #include <cstdint> |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
| if (size == 0) { |
| return 0; |
| } |
| int k = 0x7fffffff; |
| k += data[0]; |
| // Use k. |
| return k & 0; |
| } |