| //===--- mlir-bytecode-parser-fuzzer.cpp - Entry point to parser fuzzer ---===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implementation of main so we can build and test without linking libFuzzer. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "mlir/IR/BuiltinOps.h" |
| #include "mlir/IR/Diagnostics.h" |
| #include "mlir/IR/MLIRContext.h" |
| #include "mlir/Parser/Parser.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/Compiler.h" |
| |
| using namespace mlir; |
| |
| extern "C" LLVM_ATTRIBUTE_USED int LLVMFuzzerTestOneInput(const uint8_t *data, |
| size_t size) { |
| // Skip empty inputs. |
| if (size <= 1 || data[size - 1] != 0) |
| return -1; |
| llvm::StringRef str(reinterpret_cast<const char *>(data), size - 1); |
| // Skip if not bytecode. |
| if (!str.starts_with("ML\xefR")) |
| return -1; |
| |
| // Create a null-terminated memory buffer from the input. |
| DialectRegistry registry; |
| MLIRContext context(registry); |
| context.allowUnregisteredDialects(); |
| |
| // Register diagnostic handler to avoid triggering exit behavior. |
| context.getDiagEngine().registerHandler( |
| [](mlir::Diagnostic &diag) { return; }); |
| |
| // Parse module. The parsed module isn't used, so it is discarded post parse |
| // (successful or failure). The returned module is wrapped in a unique_ptr |
| // such that it is freed upon exit if returned. |
| (void)parseSourceString<ModuleOp>(str, &context); |
| return 0; |
| } |
| |
| extern "C" LLVM_ATTRIBUTE_USED int llvmFuzzerInitialize(int *argc, |
| char ***argv) { |
| return 0; |
| } |