51 lines · cpp
1//==-- handle_cxx.cpp - Helper function for Clang fuzzers ------------------==//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Implements HandleCXX for use by the Clang fuzzers.10//11//===----------------------------------------------------------------------===//12 13#include "handle_cxx.h"14 15#include "clang/CodeGen/CodeGenAction.h"16#include "clang/Frontend/CompilerInstance.h"17#include "clang/Lex/PreprocessorOptions.h"18#include "clang/Tooling/Tooling.h"19#include "llvm/Option/Option.h"20 21using namespace clang;22 23void clang_fuzzer::HandleCXX(const std::string &S,24 const char *FileName,25 const std::vector<const char *> &ExtraArgs) {26 llvm::opt::ArgStringList CC1Args;27 CC1Args.push_back("-cc1");28 for (auto &A : ExtraArgs)29 CC1Args.push_back(A);30 CC1Args.push_back(FileName);31 32 llvm::IntrusiveRefCntPtr<FileManager> Files(33 new FileManager(FileSystemOptions()));34 IgnoringDiagConsumer Diags;35 DiagnosticOptions DiagOpts;36 DiagnosticsEngine Diagnostics(DiagnosticIDs::create(), DiagOpts, &Diags,37 false);38 std::unique_ptr<clang::CompilerInvocation> Invocation(39 tooling::newInvocation(&Diagnostics, CC1Args, /*BinaryName=*/nullptr));40 std::unique_ptr<llvm::MemoryBuffer> Input =41 llvm::MemoryBuffer::getMemBuffer(S);42 Invocation->getPreprocessorOpts().addRemappedFile(FileName,43 Input.release());44 std::unique_ptr<tooling::ToolAction> action(45 tooling::newFrontendActionFactory<clang::EmitObjAction>());46 std::shared_ptr<PCHContainerOperations> PCHContainerOps =47 std::make_shared<PCHContainerOperations>();48 action->runInvocation(std::move(Invocation), Files.get(), PCHContainerOps,49 &Diags);50}51