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//===--- 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.startswith("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;
}
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