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Chandler Carruth
437d3b9af6
We end up needing to do this in any driver subcommand that reaches into external code that may not be fully fuzz-clean. No need to grow multiple different diagnostics for each, we can use a common diagnostic.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/driver/clang_subcommand.h"
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#include "llvm/TargetParser/Host.h"
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#include "toolchain/driver/clang_runner.h"
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namespace Carbon {
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auto ClangOptions::Build(CommandLine::CommandBuilder& b) -> void {
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b.AddStringPositionalArg(
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{
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.name = "ARG",
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.help = R"""(
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Arguments passed to Clang.
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)""",
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},
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[&](auto& arg_b) { arg_b.Append(&args); });
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}
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static constexpr CommandLine::CommandInfo SubcommandInfo = {
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.name = "clang",
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.help = R"""(
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Runs Clang on arguments.
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This is equivalent to running the `clang` command line directly, and provides
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the full command line interface.
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Use `carbon clang -- ARGS` to pass flags to `clang`. Although there are
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currently no flags for `carbon clang`, the `--` reserves the ability to add
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flags in the future.
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This is provided to help guarantee consistent compilation of C++ files, both
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when Clang is invoked directly and when a Carbon file importing a C++ file
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results in an indirect Clang invocation.
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)""",
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};
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ClangSubcommand::ClangSubcommand() : DriverSubcommand(SubcommandInfo) {}
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// TODO: This lacks a lot of features from the main driver code. We may need to
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// add more.
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// https://github.com/llvm/llvm-project/blob/main/clang/tools/driver/driver.cpp
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auto ClangSubcommand::Run(DriverEnv& driver_env) -> DriverResult {
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std::string target = llvm::sys::getDefaultTargetTriple();
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ClangRunner runner(driver_env.installation, target, driver_env.fs,
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driver_env.vlog_stream);
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// Don't run Clang when fuzzing, it is known to not be reliable under fuzzing
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// due to many unfixed issues.
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if (!DisableFuzzingExternalLibraries(driver_env, "clang")) {
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return {.success = false};
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}
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// Only enable Clang's leaking of memory if the driver can support that.
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if (driver_env.enable_leaking) {
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runner.EnableLeakingMemory();
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}
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return {.success = runner.Run(options_.args)};
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}
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} // namespace Carbon
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