| 1 | |
| 2 | |
| 3 | |
| 4 | |
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| 6 | |
| 7 | |
| 8 | |
| 9 | #include "clang/Driver/Job.h" |
| 10 | #include "InputInfo.h" |
| 11 | #include "clang/Basic/LLVM.h" |
| 12 | #include "clang/Driver/Driver.h" |
| 13 | #include "clang/Driver/DriverDiagnostic.h" |
| 14 | #include "clang/Driver/Tool.h" |
| 15 | #include "clang/Driver/ToolChain.h" |
| 16 | #include "llvm/ADT/ArrayRef.h" |
| 17 | #include "llvm/ADT/SmallString.h" |
| 18 | #include "llvm/ADT/SmallVector.h" |
| 19 | #include "llvm/ADT/StringRef.h" |
| 20 | #include "llvm/ADT/StringSet.h" |
| 21 | #include "llvm/ADT/StringSwitch.h" |
| 22 | #include "llvm/Support/FileSystem.h" |
| 23 | #include "llvm/Support/Path.h" |
| 24 | #include "llvm/Support/Program.h" |
| 25 | #include "llvm/Support/raw_ostream.h" |
| 26 | #include <algorithm> |
| 27 | #include <cassert> |
| 28 | #include <cstddef> |
| 29 | #include <string> |
| 30 | #include <system_error> |
| 31 | #include <utility> |
| 32 | |
| 33 | using namespace clang; |
| 34 | using namespace driver; |
| 35 | |
| 36 | Command::Command(const Action &Source, const Tool &Creator, |
| 37 | const char *Executable, |
| 38 | const llvm::opt::ArgStringList &Arguments, |
| 39 | ArrayRef<InputInfo> Inputs) |
| 40 | : Source(Source), Creator(Creator), Executable(Executable), |
| 41 | Arguments(Arguments) { |
| 42 | for (const auto &II : Inputs) |
| 43 | if (II.isFilename()) |
| 44 | InputFilenames.push_back(II.getFilename()); |
| 45 | } |
| 46 | |
| 47 | |
| 48 | |
| 49 | |
| 50 | static bool skipArgs(const char *Flag, bool HaveCrashVFS, int &SkipNum, |
| 51 | bool &IsInclude) { |
| 52 | SkipNum = 2; |
| 53 | |
| 54 | |
| 55 | bool ShouldSkip = llvm::StringSwitch<bool>(Flag) |
| 56 | .Cases("-MF", "-MT", "-MQ", "-serialize-diagnostic-file", true) |
| 57 | .Cases("-o", "-dependency-file", true) |
| 58 | .Cases("-fdebug-compilation-dir", "-diagnostic-log-file", true) |
| 59 | .Cases("-dwarf-debug-flags", "-ivfsoverlay", true) |
| 60 | .Default(false); |
| 61 | if (ShouldSkip) |
| 62 | return true; |
| 63 | |
| 64 | |
| 65 | IsInclude = llvm::StringSwitch<bool>(Flag) |
| 66 | .Cases("-include", "-header-include-file", true) |
| 67 | .Cases("-idirafter", "-internal-isystem", "-iwithprefix", true) |
| 68 | .Cases("-internal-externc-isystem", "-iprefix", true) |
| 69 | .Cases("-iwithprefixbefore", "-isystem", "-iquote", true) |
| 70 | .Cases("-isysroot", "-I", "-F", "-resource-dir", true) |
| 71 | .Cases("-iframework", "-include-pch", true) |
| 72 | .Default(false); |
| 73 | if (IsInclude) |
| 74 | return !HaveCrashVFS; |
| 75 | |
| 76 | |
| 77 | |
| 78 | |
| 79 | ShouldSkip = llvm::StringSwitch<bool>(Flag) |
| 80 | .Cases("-M", "-MM", "-MG", "-MP", "-MD", true) |
| 81 | .Case("-MMD", true) |
| 82 | .Default(false); |
| 83 | |
| 84 | |
| 85 | SkipNum = 1; |
| 86 | if (ShouldSkip) |
| 87 | return true; |
| 88 | |
| 89 | |
| 90 | StringRef FlagRef(Flag); |
| 91 | IsInclude = FlagRef.startswith("-F") || FlagRef.startswith("-I"); |
| 92 | if (IsInclude) |
| 93 | return !HaveCrashVFS; |
| 94 | if (FlagRef.startswith("-fmodules-cache-path=")) |
| 95 | return true; |
| 96 | |
| 97 | SkipNum = 0; |
| 98 | return false; |
| 99 | } |
| 100 | |
| 101 | void Command::printArg(raw_ostream &OS, StringRef Arg, bool Quote) { |
| 102 | const bool Escape = Arg.find_first_of("\"\\$") != StringRef::npos; |
| 103 | |
| 104 | if (!Quote && !Escape) { |
| 105 | OS << Arg; |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | |
| 110 | OS << '"'; |
| 111 | for (const auto c : Arg) { |
| 112 | if (c == '"' || c == '\\' || c == '$') |
| 113 | OS << '\\'; |
| 114 | OS << c; |
| 115 | } |
| 116 | OS << '"'; |
| 117 | } |
| 118 | |
| 119 | void Command::writeResponseFile(raw_ostream &OS) const { |
| 120 | |
| 121 | if (Creator.getResponseFilesSupport() == Tool::RF_FileList) { |
| 122 | for (const auto *Arg : InputFileList) { |
| 123 | OS << Arg << '\n'; |
| 124 | } |
| 125 | return; |
| 126 | } |
| 127 | |
| 128 | |
| 129 | |
| 130 | |
| 131 | for (const auto *Arg : Arguments) { |
| 132 | OS << '"'; |
| 133 | |
| 134 | for (; *Arg != '\0'; Arg++) { |
| 135 | if (*Arg == '\"' || *Arg == '\\') { |
| 136 | OS << '\\'; |
| 137 | } |
| 138 | OS << *Arg; |
| 139 | } |
| 140 | |
| 141 | OS << "\" "; |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | void Command::buildArgvForResponseFile( |
| 146 | llvm::SmallVectorImpl<const char *> &Out) const { |
| 147 | |
| 148 | |
| 149 | |
| 150 | if (Creator.getResponseFilesSupport() != Tool::RF_FileList) { |
| 151 | Out.push_back(Executable); |
| 152 | Out.push_back(ResponseFileFlag.c_str()); |
| 153 | return; |
| 154 | } |
| 155 | |
| 156 | llvm::StringSet<> Inputs; |
| 157 | for (const auto *InputName : InputFileList) |
| 158 | Inputs.insert(InputName); |
| 159 | Out.push_back(Executable); |
| 160 | |
| 161 | |
| 162 | bool FirstInput = true; |
| 163 | for (const auto *Arg : Arguments) { |
| 164 | if (Inputs.count(Arg) == 0) { |
| 165 | Out.push_back(Arg); |
| 166 | } else if (FirstInput) { |
| 167 | FirstInput = false; |
| 168 | Out.push_back(Creator.getResponseFileFlag()); |
| 169 | Out.push_back(ResponseFile); |
| 170 | } |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | |
| 175 | static void |
| 176 | rewriteIncludes(const llvm::ArrayRef<const char *> &Args, size_t Idx, |
| 177 | size_t NumArgs, |
| 178 | llvm::SmallVectorImpl<llvm::SmallString<128>> &IncFlags) { |
| 179 | using namespace llvm; |
| 180 | using namespace sys; |
| 181 | |
| 182 | auto getAbsPath = [](StringRef InInc, SmallVectorImpl<char> &OutInc) -> bool { |
| 183 | if (path::is_absolute(InInc)) |
| 184 | return false; |
| 185 | std::error_code EC = fs::current_path(OutInc); |
| 186 | if (EC) |
| 187 | return false; |
| 188 | path::append(OutInc, InInc); |
| 189 | return true; |
| 190 | }; |
| 191 | |
| 192 | SmallString<128> NewInc; |
| 193 | if (NumArgs == 1) { |
| 194 | StringRef FlagRef(Args[Idx + NumArgs - 1]); |
| 195 | (0) . __assert_fail ("(FlagRef.startswith(\"-F\") || FlagRef.startswith(\"-I\")) && \"Expecting -I or -F\"", "/home/seafit/code_projects/clang_source/clang/lib/Driver/Job.cpp", 196, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((FlagRef.startswith("-F") || FlagRef.startswith("-I")) && |
| 196 | (0) . __assert_fail ("(FlagRef.startswith(\"-F\") || FlagRef.startswith(\"-I\")) && \"Expecting -I or -F\"", "/home/seafit/code_projects/clang_source/clang/lib/Driver/Job.cpp", 196, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Expecting -I or -F"); |
| 197 | StringRef Inc = FlagRef.slice(2, StringRef::npos); |
| 198 | if (getAbsPath(Inc, NewInc)) { |
| 199 | SmallString<128> NewArg(FlagRef.slice(0, 2)); |
| 200 | NewArg += NewInc; |
| 201 | IncFlags.push_back(std::move(NewArg)); |
| 202 | } |
| 203 | return; |
| 204 | } |
| 205 | |
| 206 | (0) . __assert_fail ("NumArgs == 2 && \"Not expecting more than two arguments\"", "/home/seafit/code_projects/clang_source/clang/lib/Driver/Job.cpp", 206, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(NumArgs == 2 && "Not expecting more than two arguments"); |
| 207 | StringRef Inc(Args[Idx + NumArgs - 1]); |
| 208 | if (!getAbsPath(Inc, NewInc)) |
| 209 | return; |
| 210 | IncFlags.push_back(SmallString<128>(Args[Idx])); |
| 211 | IncFlags.push_back(std::move(NewInc)); |
| 212 | } |
| 213 | |
| 214 | void Command::Print(raw_ostream &OS, const char *Terminator, bool Quote, |
| 215 | CrashReportInfo *CrashInfo) const { |
| 216 | |
| 217 | OS << ' '; |
| 218 | printArg(OS, Executable, ); |
| 219 | |
| 220 | ArrayRef<const char *> Args = Arguments; |
| 221 | SmallVector<const char *, 128> ArgsRespFile; |
| 222 | if (ResponseFile != nullptr) { |
| 223 | buildArgvForResponseFile(ArgsRespFile); |
| 224 | Args = ArrayRef<const char *>(ArgsRespFile).slice(1); |
| 225 | } |
| 226 | |
| 227 | bool HaveCrashVFS = CrashInfo && !CrashInfo->VFSPath.empty(); |
| 228 | for (size_t i = 0, e = Args.size(); i < e; ++i) { |
| 229 | const char *const Arg = Args[i]; |
| 230 | |
| 231 | if (CrashInfo) { |
| 232 | int NumArgs = 0; |
| 233 | bool IsInclude = false; |
| 234 | if (skipArgs(Arg, HaveCrashVFS, NumArgs, IsInclude)) { |
| 235 | i += NumArgs - 1; |
| 236 | continue; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | if (HaveCrashVFS && IsInclude) { |
| 241 | SmallVector<SmallString<128>, 2> NewIncFlags; |
| 242 | rewriteIncludes(Args, i, NumArgs, NewIncFlags); |
| 243 | if (!NewIncFlags.empty()) { |
| 244 | for (auto &F : NewIncFlags) { |
| 245 | OS << ' '; |
| 246 | printArg(OS, F.c_str(), Quote); |
| 247 | } |
| 248 | i += NumArgs - 1; |
| 249 | continue; |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | auto Found = std::find_if(InputFilenames.begin(), InputFilenames.end(), |
| 254 | [&Arg](StringRef IF) { return IF == Arg; }); |
| 255 | if (Found != InputFilenames.end() && |
| 256 | (i == 0 || StringRef(Args[i - 1]) != "-main-file-name")) { |
| 257 | |
| 258 | OS << ' '; |
| 259 | StringRef ShortName = llvm::sys::path::filename(CrashInfo->Filename); |
| 260 | printArg(OS, ShortName.str(), Quote); |
| 261 | continue; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | OS << ' '; |
| 266 | printArg(OS, Arg, Quote); |
| 267 | } |
| 268 | |
| 269 | if (CrashInfo && HaveCrashVFS) { |
| 270 | OS << ' '; |
| 271 | printArg(OS, "-ivfsoverlay", Quote); |
| 272 | OS << ' '; |
| 273 | printArg(OS, CrashInfo->VFSPath.str(), Quote); |
| 274 | |
| 275 | |
| 276 | |
| 277 | |
| 278 | |
| 279 | |
| 280 | SmallString<128> RelModCacheDir = llvm::sys::path::parent_path( |
| 281 | llvm::sys::path::parent_path(CrashInfo->VFSPath)); |
| 282 | llvm::sys::path::append(RelModCacheDir, "repro-modules"); |
| 283 | |
| 284 | std::string ModCachePath = "-fmodules-cache-path="; |
| 285 | ModCachePath.append(RelModCacheDir.c_str()); |
| 286 | |
| 287 | OS << ' '; |
| 288 | printArg(OS, ModCachePath, Quote); |
| 289 | } |
| 290 | |
| 291 | if (ResponseFile != nullptr) { |
| 292 | OS << "\n Arguments passed via response file:\n"; |
| 293 | writeResponseFile(OS); |
| 294 | |
| 295 | |
| 296 | if (Creator.getResponseFilesSupport() != Tool::RF_FileList) |
| 297 | OS << "\n"; |
| 298 | OS << " (end of response file)"; |
| 299 | } |
| 300 | |
| 301 | OS << Terminator; |
| 302 | } |
| 303 | |
| 304 | void Command::setResponseFile(const char *FileName) { |
| 305 | ResponseFile = FileName; |
| 306 | ResponseFileFlag = Creator.getResponseFileFlag(); |
| 307 | ResponseFileFlag += FileName; |
| 308 | } |
| 309 | |
| 310 | void Command::setEnvironment(llvm::ArrayRef<const char *> NewEnvironment) { |
| 311 | Environment.reserve(NewEnvironment.size() + 1); |
| 312 | Environment.assign(NewEnvironment.begin(), NewEnvironment.end()); |
| 313 | Environment.push_back(nullptr); |
| 314 | } |
| 315 | |
| 316 | int Command::Execute(ArrayRef<llvm::Optional<StringRef>> Redirects, |
| 317 | std::string *ErrMsg, bool *ExecutionFailed) const { |
| 318 | if (PrintInputFilenames) { |
| 319 | for (const char *Arg : InputFilenames) |
| 320 | llvm::outs() << llvm::sys::path::filename(Arg) << "\n"; |
| 321 | llvm::outs().flush(); |
| 322 | } |
| 323 | |
| 324 | SmallVector<const char*, 128> Argv; |
| 325 | |
| 326 | Optional<ArrayRef<StringRef>> Env; |
| 327 | std::vector<StringRef> ArgvVectorStorage; |
| 328 | if (!Environment.empty()) { |
| 329 | (0) . __assert_fail ("Environment.back() == nullptr && \"Environment vector should be null-terminated by now\"", "/home/seafit/code_projects/clang_source/clang/lib/Driver/Job.cpp", 330, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Environment.back() == nullptr && |
| 330 | (0) . __assert_fail ("Environment.back() == nullptr && \"Environment vector should be null-terminated by now\"", "/home/seafit/code_projects/clang_source/clang/lib/Driver/Job.cpp", 330, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Environment vector should be null-terminated by now"); |
| 331 | ArgvVectorStorage = llvm::toStringRefArray(Environment.data()); |
| 332 | Env = makeArrayRef(ArgvVectorStorage); |
| 333 | } |
| 334 | |
| 335 | if (ResponseFile == nullptr) { |
| 336 | Argv.push_back(Executable); |
| 337 | Argv.append(Arguments.begin(), Arguments.end()); |
| 338 | Argv.push_back(nullptr); |
| 339 | |
| 340 | auto Args = llvm::toStringRefArray(Argv.data()); |
| 341 | return llvm::sys::ExecuteAndWait( |
| 342 | Executable, Args, Env, Redirects, 0, |
| 343 | 0, ErrMsg, ExecutionFailed); |
| 344 | } |
| 345 | |
| 346 | |
| 347 | |
| 348 | std::string RespContents; |
| 349 | llvm::raw_string_ostream SS(RespContents); |
| 350 | |
| 351 | |
| 352 | writeResponseFile(SS); |
| 353 | buildArgvForResponseFile(Argv); |
| 354 | Argv.push_back(nullptr); |
| 355 | SS.flush(); |
| 356 | |
| 357 | |
| 358 | if (std::error_code EC = writeFileWithEncoding( |
| 359 | ResponseFile, RespContents, Creator.getResponseFileEncoding())) { |
| 360 | if (ErrMsg) |
| 361 | *ErrMsg = EC.message(); |
| 362 | if (ExecutionFailed) |
| 363 | *ExecutionFailed = true; |
| 364 | return -1; |
| 365 | } |
| 366 | |
| 367 | auto Args = llvm::toStringRefArray(Argv.data()); |
| 368 | return llvm::sys::ExecuteAndWait(Executable, Args, Env, Redirects, |
| 369 | 0, |
| 370 | 0, ErrMsg, ExecutionFailed); |
| 371 | } |
| 372 | |
| 373 | FallbackCommand::FallbackCommand(const Action &Source_, const Tool &Creator_, |
| 374 | const char *Executable_, |
| 375 | const llvm::opt::ArgStringList &Arguments_, |
| 376 | ArrayRef<InputInfo> Inputs, |
| 377 | std::unique_ptr<Command> Fallback_) |
| 378 | : Command(Source_, Creator_, Executable_, Arguments_, Inputs), |
| 379 | Fallback(std::move(Fallback_)) {} |
| 380 | |
| 381 | void FallbackCommand::Print(raw_ostream &OS, const char *Terminator, |
| 382 | bool Quote, CrashReportInfo *CrashInfo) const { |
| 383 | Command::Print(OS, "", Quote, CrashInfo); |
| 384 | OS << " ||"; |
| 385 | Fallback->Print(OS, Terminator, Quote, CrashInfo); |
| 386 | } |
| 387 | |
| 388 | static bool ShouldFallback(int ExitCode) { |
| 389 | |
| 390 | |
| 391 | |
| 392 | return ExitCode != 0; |
| 393 | } |
| 394 | |
| 395 | int FallbackCommand::Execute(ArrayRef<llvm::Optional<StringRef>> Redirects, |
| 396 | std::string *ErrMsg, bool *ExecutionFailed) const { |
| 397 | int PrimaryStatus = Command::Execute(Redirects, ErrMsg, ExecutionFailed); |
| 398 | if (!ShouldFallback(PrimaryStatus)) |
| 399 | return PrimaryStatus; |
| 400 | |
| 401 | |
| 402 | if (ErrMsg) |
| 403 | ErrMsg->clear(); |
| 404 | if (ExecutionFailed) |
| 405 | *ExecutionFailed = false; |
| 406 | |
| 407 | const Driver &D = getCreator().getToolChain().getDriver(); |
| 408 | D.Diag(diag::warn_drv_invoking_fallback) << Fallback->getExecutable(); |
| 409 | |
| 410 | int SecondaryStatus = Fallback->Execute(Redirects, ErrMsg, ExecutionFailed); |
| 411 | return SecondaryStatus; |
| 412 | } |
| 413 | |
| 414 | ForceSuccessCommand::ForceSuccessCommand( |
| 415 | const Action &Source_, const Tool &Creator_, const char *Executable_, |
| 416 | const llvm::opt::ArgStringList &Arguments_, ArrayRef<InputInfo> Inputs) |
| 417 | : Command(Source_, Creator_, Executable_, Arguments_, Inputs) {} |
| 418 | |
| 419 | void ForceSuccessCommand::Print(raw_ostream &OS, const char *Terminator, |
| 420 | bool Quote, CrashReportInfo *CrashInfo) const { |
| 421 | Command::Print(OS, "", Quote, CrashInfo); |
| 422 | OS << " || (exit 0)" << Terminator; |
| 423 | } |
| 424 | |
| 425 | int ForceSuccessCommand::Execute(ArrayRef<llvm::Optional<StringRef>> Redirects, |
| 426 | std::string *ErrMsg, |
| 427 | bool *ExecutionFailed) const { |
| 428 | int Status = Command::Execute(Redirects, ErrMsg, ExecutionFailed); |
| 429 | (void)Status; |
| 430 | if (ExecutionFailed) |
| 431 | *ExecutionFailed = false; |
| 432 | return 0; |
| 433 | } |
| 434 | |
| 435 | void JobList::Print(raw_ostream &OS, const char *Terminator, bool Quote, |
| 436 | CrashReportInfo *CrashInfo) const { |
| 437 | for (const auto &Job : *this) |
| 438 | Job.Print(OS, Terminator, Quote, CrashInfo); |
| 439 | } |
| 440 | |
| 441 | void JobList::clear() { Jobs.clear(); } |
| 442 | |