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| 12 | |
| 13 | #include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h" |
| 14 | #include "clang/AST/Decl.h" |
| 15 | #include "clang/AST/DeclBase.h" |
| 16 | #include "clang/AST/DeclCXX.h" |
| 17 | #include "clang/AST/DeclObjC.h" |
| 18 | #include "clang/AST/DeclTemplate.h" |
| 19 | #include "clang/AST/Expr.h" |
| 20 | #include "clang/AST/ExprCXX.h" |
| 21 | #include "clang/AST/OperationKinds.h" |
| 22 | #include "clang/AST/ParentMap.h" |
| 23 | #include "clang/AST/Stmt.h" |
| 24 | #include "clang/AST/Type.h" |
| 25 | #include "clang/Analysis/AnalysisDeclContext.h" |
| 26 | #include "clang/Analysis/CFG.h" |
| 27 | #include "clang/Analysis/ProgramPoint.h" |
| 28 | #include "clang/Basic/FileManager.h" |
| 29 | #include "clang/Basic/LLVM.h" |
| 30 | #include "clang/Basic/SourceLocation.h" |
| 31 | #include "clang/Basic/SourceManager.h" |
| 32 | #include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" |
| 33 | #include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h" |
| 34 | #include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h" |
| 35 | #include "llvm/ADT/ArrayRef.h" |
| 36 | #include "llvm/ADT/FoldingSet.h" |
| 37 | #include "llvm/ADT/None.h" |
| 38 | #include "llvm/ADT/Optional.h" |
| 39 | #include "llvm/ADT/STLExtras.h" |
| 40 | #include "llvm/ADT/SmallString.h" |
| 41 | #include "llvm/ADT/SmallVector.h" |
| 42 | #include "llvm/ADT/StringExtras.h" |
| 43 | #include "llvm/ADT/StringRef.h" |
| 44 | #include "llvm/Support/Casting.h" |
| 45 | #include "llvm/Support/ErrorHandling.h" |
| 46 | #include "llvm/Support/raw_ostream.h" |
| 47 | #include <cassert> |
| 48 | #include <cstring> |
| 49 | #include <memory> |
| 50 | #include <utility> |
| 51 | #include <vector> |
| 52 | |
| 53 | using namespace clang; |
| 54 | using namespace ento; |
| 55 | |
| 56 | bool PathDiagnosticMacroPiece::containsEvent() const { |
| 57 | for (const auto &P : subPieces) { |
| 58 | if (isa<PathDiagnosticEventPiece>(*P)) |
| 59 | return true; |
| 60 | if (const auto *MP = dyn_cast<PathDiagnosticMacroPiece>(P.get())) |
| 61 | if (MP->containsEvent()) |
| 62 | return true; |
| 63 | } |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | static StringRef StripTrailingDots(StringRef s) { |
| 68 | for (StringRef::size_type i = s.size(); i != 0; --i) |
| 69 | if (s[i - 1] != '.') |
| 70 | return s.substr(0, i); |
| 71 | return {}; |
| 72 | } |
| 73 | |
| 74 | PathDiagnosticPiece::PathDiagnosticPiece(StringRef s, |
| 75 | Kind k, DisplayHint hint) |
| 76 | : str(StripTrailingDots(s)), kind(k), Hint(hint) {} |
| 77 | |
| 78 | PathDiagnosticPiece::PathDiagnosticPiece(Kind k, DisplayHint hint) |
| 79 | : kind(k), Hint(hint) {} |
| 80 | |
| 81 | PathDiagnosticPiece::~PathDiagnosticPiece() = default; |
| 82 | |
| 83 | PathDiagnosticEventPiece::~PathDiagnosticEventPiece() = default; |
| 84 | |
| 85 | PathDiagnosticCallPiece::~PathDiagnosticCallPiece() = default; |
| 86 | |
| 87 | PathDiagnosticControlFlowPiece::~PathDiagnosticControlFlowPiece() = default; |
| 88 | |
| 89 | PathDiagnosticMacroPiece::~PathDiagnosticMacroPiece() = default; |
| 90 | |
| 91 | PathDiagnosticNotePiece::~PathDiagnosticNotePiece() = default; |
| 92 | |
| 93 | void PathPieces::flattenTo(PathPieces &Primary, PathPieces &Current, |
| 94 | bool ShouldFlattenMacros) const { |
| 95 | for (auto &Piece : *this) { |
| 96 | switch (Piece->getKind()) { |
| 97 | case PathDiagnosticPiece::Call: { |
| 98 | auto &Call = cast<PathDiagnosticCallPiece>(*Piece); |
| 99 | if (auto CallEnter = Call.getCallEnterEvent()) |
| 100 | Current.push_back(std::move(CallEnter)); |
| 101 | Call.path.flattenTo(Primary, Primary, ShouldFlattenMacros); |
| 102 | if (auto callExit = Call.getCallExitEvent()) |
| 103 | Current.push_back(std::move(callExit)); |
| 104 | break; |
| 105 | } |
| 106 | case PathDiagnosticPiece::Macro: { |
| 107 | auto &Macro = cast<PathDiagnosticMacroPiece>(*Piece); |
| 108 | if (ShouldFlattenMacros) { |
| 109 | Macro.subPieces.flattenTo(Primary, Primary, ShouldFlattenMacros); |
| 110 | } else { |
| 111 | Current.push_back(Piece); |
| 112 | PathPieces NewPath; |
| 113 | Macro.subPieces.flattenTo(Primary, NewPath, ShouldFlattenMacros); |
| 114 | |
| 115 | Macro.subPieces = NewPath; |
| 116 | } |
| 117 | break; |
| 118 | } |
| 119 | case PathDiagnosticPiece::Event: |
| 120 | case PathDiagnosticPiece::ControlFlow: |
| 121 | case PathDiagnosticPiece::Note: |
| 122 | Current.push_back(Piece); |
| 123 | break; |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | PathDiagnostic::~PathDiagnostic() = default; |
| 129 | |
| 130 | PathDiagnostic::PathDiagnostic( |
| 131 | StringRef CheckName, const Decl *declWithIssue, StringRef bugtype, |
| 132 | StringRef verboseDesc, StringRef shortDesc, StringRef category, |
| 133 | PathDiagnosticLocation LocationToUnique, const Decl *DeclToUnique, |
| 134 | std::unique_ptr<FilesToLineNumsMap> ExecutedLines) |
| 135 | : CheckName(CheckName), DeclWithIssue(declWithIssue), |
| 136 | BugType(StripTrailingDots(bugtype)), |
| 137 | VerboseDesc(StripTrailingDots(verboseDesc)), |
| 138 | ShortDesc(StripTrailingDots(shortDesc)), |
| 139 | Category(StripTrailingDots(category)), UniqueingLoc(LocationToUnique), |
| 140 | UniqueingDecl(DeclToUnique), ExecutedLines(std::move(ExecutedLines)), |
| 141 | path(pathImpl) {} |
| 142 | |
| 143 | static PathDiagnosticCallPiece * |
| 144 | (PathDiagnosticCallPiece *CP, |
| 145 | const SourceManager &SMgr) { |
| 146 | SourceLocation CallLoc = CP->callEnter.asLocation(); |
| 147 | |
| 148 | |
| 149 | if (CallLoc.isMacroID()) |
| 150 | return nullptr; |
| 151 | |
| 152 | (0) . __assert_fail ("AnalysisManager..isInCodeFile(CallLoc, SMgr) && \"The call piece should not be in a header file.\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 153, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(AnalysisManager::isInCodeFile(CallLoc, SMgr) && |
| 153 | (0) . __assert_fail ("AnalysisManager..isInCodeFile(CallLoc, SMgr) && \"The call piece should not be in a header file.\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 153, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true"> "The call piece should not be in a header file."); |
| 154 | |
| 155 | |
| 156 | if (!AnalysisManager::isInCodeFile(CP->callEnterWithin.asLocation(), SMgr)) |
| 157 | return CP; |
| 158 | |
| 159 | const PathPieces &Path = CP->path; |
| 160 | if (Path.empty()) |
| 161 | return nullptr; |
| 162 | |
| 163 | |
| 164 | |
| 165 | if (auto *CPInner = dyn_cast<PathDiagnosticCallPiece>(Path.back().get())) |
| 166 | return getFirstStackedCallToHeaderFile(CPInner, SMgr); |
| 167 | |
| 168 | |
| 169 | return nullptr; |
| 170 | } |
| 171 | |
| 172 | void PathDiagnostic::resetDiagnosticLocationToMainFile() { |
| 173 | if (path.empty()) |
| 174 | return; |
| 175 | |
| 176 | PathDiagnosticPiece *LastP = path.back().get(); |
| 177 | assert(LastP); |
| 178 | const SourceManager &SMgr = LastP->getLocation().getManager(); |
| 179 | |
| 180 | |
| 181 | |
| 182 | if (auto *CP = dyn_cast<PathDiagnosticCallPiece>(LastP)) { |
| 183 | CP = getFirstStackedCallToHeaderFile(CP, SMgr); |
| 184 | if (CP) { |
| 185 | |
| 186 | CP->setAsLastInMainSourceFile(); |
| 187 | |
| 188 | |
| 189 | const auto *ND = dyn_cast<NamedDecl>(CP->getCallee()); |
| 190 | if (ND) { |
| 191 | SmallString<200> buf; |
| 192 | llvm::raw_svector_ostream os(buf); |
| 193 | os << " (within a call to '" << ND->getDeclName() << "')"; |
| 194 | appendToDesc(os.str()); |
| 195 | } |
| 196 | |
| 197 | |
| 198 | DeclWithIssue = CP->getCaller(); |
| 199 | Loc = CP->getLocation(); |
| 200 | |
| 201 | return; |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | void PathDiagnosticConsumer::anchor() {} |
| 207 | |
| 208 | PathDiagnosticConsumer::~PathDiagnosticConsumer() { |
| 209 | |
| 210 | for (auto &Diag : Diags) |
| 211 | delete &Diag; |
| 212 | } |
| 213 | |
| 214 | void PathDiagnosticConsumer::HandlePathDiagnostic( |
| 215 | std::unique_ptr<PathDiagnostic> D) { |
| 216 | if (!D || D->path.empty()) |
| 217 | return; |
| 218 | |
| 219 | |
| 220 | |
| 221 | |
| 222 | D->flattenLocations(); |
| 223 | |
| 224 | |
| 225 | |
| 226 | if (!supportsCrossFileDiagnostics()) { |
| 227 | |
| 228 | FileID FID; |
| 229 | const SourceManager &SMgr = D->path.front()->getLocation().getManager(); |
| 230 | SmallVector<const PathPieces *, 5> WorkList; |
| 231 | WorkList.push_back(&D->path); |
| 232 | SmallString<128> buf; |
| 233 | llvm::raw_svector_ostream warning(buf); |
| 234 | warning << "warning: Path diagnostic report is not generated. Current " |
| 235 | << "output format does not support diagnostics that cross file " |
| 236 | << "boundaries. Refer to --analyzer-output for valid output " |
| 237 | << "formats\n"; |
| 238 | |
| 239 | while (!WorkList.empty()) { |
| 240 | const PathPieces &path = *WorkList.pop_back_val(); |
| 241 | |
| 242 | for (const auto &I : path) { |
| 243 | const PathDiagnosticPiece *piece = I.get(); |
| 244 | FullSourceLoc L = piece->getLocation().asLocation().getExpansionLoc(); |
| 245 | |
| 246 | if (FID.isInvalid()) { |
| 247 | FID = SMgr.getFileID(L); |
| 248 | } else if (SMgr.getFileID(L) != FID) { |
| 249 | llvm::errs() << warning.str(); |
| 250 | return; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | ArrayRef<SourceRange> Ranges = piece->getRanges(); |
| 255 | for (const auto &I : Ranges) { |
| 256 | SourceLocation L = SMgr.getExpansionLoc(I.getBegin()); |
| 257 | if (!L.isFileID() || SMgr.getFileID(L) != FID) { |
| 258 | llvm::errs() << warning.str(); |
| 259 | return; |
| 260 | } |
| 261 | L = SMgr.getExpansionLoc(I.getEnd()); |
| 262 | if (!L.isFileID() || SMgr.getFileID(L) != FID) { |
| 263 | llvm::errs() << warning.str(); |
| 264 | return; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | if (const auto *call = dyn_cast<PathDiagnosticCallPiece>(piece)) |
| 269 | WorkList.push_back(&call->path); |
| 270 | else if (const auto *macro = dyn_cast<PathDiagnosticMacroPiece>(piece)) |
| 271 | WorkList.push_back(¯o->subPieces); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | if (FID.isInvalid()) |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | |
| 280 | llvm::FoldingSetNodeID profile; |
| 281 | D->Profile(profile); |
| 282 | void *InsertPos = nullptr; |
| 283 | |
| 284 | if (PathDiagnostic *orig = Diags.FindNodeOrInsertPos(profile, InsertPos)) { |
| 285 | |
| 286 | |
| 287 | |
| 288 | |
| 289 | const unsigned orig_size = orig->full_size(); |
| 290 | const unsigned new_size = D->full_size(); |
| 291 | if (orig_size <= new_size) |
| 292 | return; |
| 293 | |
| 294 | assert(orig != D.get()); |
| 295 | Diags.RemoveNode(orig); |
| 296 | delete orig; |
| 297 | } |
| 298 | |
| 299 | Diags.InsertNode(D.release()); |
| 300 | } |
| 301 | |
| 302 | static Optional<bool> comparePath(const PathPieces &X, const PathPieces &Y); |
| 303 | |
| 304 | static Optional<bool> |
| 305 | compareControlFlow(const PathDiagnosticControlFlowPiece &X, |
| 306 | const PathDiagnosticControlFlowPiece &Y) { |
| 307 | FullSourceLoc XSL = X.getStartLocation().asLocation(); |
| 308 | FullSourceLoc YSL = Y.getStartLocation().asLocation(); |
| 309 | if (XSL != YSL) |
| 310 | return XSL.isBeforeInTranslationUnitThan(YSL); |
| 311 | FullSourceLoc XEL = X.getEndLocation().asLocation(); |
| 312 | FullSourceLoc YEL = Y.getEndLocation().asLocation(); |
| 313 | if (XEL != YEL) |
| 314 | return XEL.isBeforeInTranslationUnitThan(YEL); |
| 315 | return None; |
| 316 | } |
| 317 | |
| 318 | static Optional<bool> compareMacro(const PathDiagnosticMacroPiece &X, |
| 319 | const PathDiagnosticMacroPiece &Y) { |
| 320 | return comparePath(X.subPieces, Y.subPieces); |
| 321 | } |
| 322 | |
| 323 | static Optional<bool> compareCall(const PathDiagnosticCallPiece &X, |
| 324 | const PathDiagnosticCallPiece &Y) { |
| 325 | FullSourceLoc X_CEL = X.callEnter.asLocation(); |
| 326 | FullSourceLoc Y_CEL = Y.callEnter.asLocation(); |
| 327 | if (X_CEL != Y_CEL) |
| 328 | return X_CEL.isBeforeInTranslationUnitThan(Y_CEL); |
| 329 | FullSourceLoc X_CEWL = X.callEnterWithin.asLocation(); |
| 330 | FullSourceLoc Y_CEWL = Y.callEnterWithin.asLocation(); |
| 331 | if (X_CEWL != Y_CEWL) |
| 332 | return X_CEWL.isBeforeInTranslationUnitThan(Y_CEWL); |
| 333 | FullSourceLoc X_CRL = X.callReturn.asLocation(); |
| 334 | FullSourceLoc Y_CRL = Y.callReturn.asLocation(); |
| 335 | if (X_CRL != Y_CRL) |
| 336 | return X_CRL.isBeforeInTranslationUnitThan(Y_CRL); |
| 337 | return comparePath(X.path, Y.path); |
| 338 | } |
| 339 | |
| 340 | static Optional<bool> comparePiece(const PathDiagnosticPiece &X, |
| 341 | const PathDiagnosticPiece &Y) { |
| 342 | if (X.getKind() != Y.getKind()) |
| 343 | return X.getKind() < Y.getKind(); |
| 344 | |
| 345 | FullSourceLoc XL = X.getLocation().asLocation(); |
| 346 | FullSourceLoc YL = Y.getLocation().asLocation(); |
| 347 | if (XL != YL) |
| 348 | return XL.isBeforeInTranslationUnitThan(YL); |
| 349 | |
| 350 | if (X.getString() != Y.getString()) |
| 351 | return X.getString() < Y.getString(); |
| 352 | |
| 353 | if (X.getRanges().size() != Y.getRanges().size()) |
| 354 | return X.getRanges().size() < Y.getRanges().size(); |
| 355 | |
| 356 | const SourceManager &SM = XL.getManager(); |
| 357 | |
| 358 | for (unsigned i = 0, n = X.getRanges().size(); i < n; ++i) { |
| 359 | SourceRange XR = X.getRanges()[i]; |
| 360 | SourceRange YR = Y.getRanges()[i]; |
| 361 | if (XR != YR) { |
| 362 | if (XR.getBegin() != YR.getBegin()) |
| 363 | return SM.isBeforeInTranslationUnit(XR.getBegin(), YR.getBegin()); |
| 364 | return SM.isBeforeInTranslationUnit(XR.getEnd(), YR.getEnd()); |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | switch (X.getKind()) { |
| 369 | case PathDiagnosticPiece::ControlFlow: |
| 370 | return compareControlFlow(cast<PathDiagnosticControlFlowPiece>(X), |
| 371 | cast<PathDiagnosticControlFlowPiece>(Y)); |
| 372 | case PathDiagnosticPiece::Event: |
| 373 | case PathDiagnosticPiece::Note: |
| 374 | return None; |
| 375 | case PathDiagnosticPiece::Macro: |
| 376 | return compareMacro(cast<PathDiagnosticMacroPiece>(X), |
| 377 | cast<PathDiagnosticMacroPiece>(Y)); |
| 378 | case PathDiagnosticPiece::Call: |
| 379 | return compareCall(cast<PathDiagnosticCallPiece>(X), |
| 380 | cast<PathDiagnosticCallPiece>(Y)); |
| 381 | } |
| 382 | llvm_unreachable("all cases handled"); |
| 383 | } |
| 384 | |
| 385 | static Optional<bool> comparePath(const PathPieces &X, const PathPieces &Y) { |
| 386 | if (X.size() != Y.size()) |
| 387 | return X.size() < Y.size(); |
| 388 | |
| 389 | PathPieces::const_iterator X_I = X.begin(), X_end = X.end(); |
| 390 | PathPieces::const_iterator Y_I = Y.begin(), Y_end = Y.end(); |
| 391 | |
| 392 | for ( ; X_I != X_end && Y_I != Y_end; ++X_I, ++Y_I) { |
| 393 | Optional<bool> b = comparePiece(**X_I, **Y_I); |
| 394 | if (b.hasValue()) |
| 395 | return b.getValue(); |
| 396 | } |
| 397 | |
| 398 | return None; |
| 399 | } |
| 400 | |
| 401 | static bool compareCrossTUSourceLocs(FullSourceLoc XL, FullSourceLoc YL) { |
| 402 | std::pair<FileID, unsigned> XOffs = XL.getDecomposedLoc(); |
| 403 | std::pair<FileID, unsigned> YOffs = YL.getDecomposedLoc(); |
| 404 | const SourceManager &SM = XL.getManager(); |
| 405 | std::pair<bool, bool> InSameTU = SM.isInTheSameTranslationUnit(XOffs, YOffs); |
| 406 | if (InSameTU.first) |
| 407 | return XL.isBeforeInTranslationUnitThan(YL); |
| 408 | const FileEntry *XFE = SM.getFileEntryForID(XL.getSpellingLoc().getFileID()); |
| 409 | const FileEntry *YFE = SM.getFileEntryForID(YL.getSpellingLoc().getFileID()); |
| 410 | if (!XFE || !YFE) |
| 411 | return XFE && !YFE; |
| 412 | int NameCmp = XFE->getName().compare(YFE->getName()); |
| 413 | if (NameCmp != 0) |
| 414 | return NameCmp == -1; |
| 415 | |
| 416 | return XL.getFileID() < YL.getFileID(); |
| 417 | } |
| 418 | |
| 419 | static bool compare(const PathDiagnostic &X, const PathDiagnostic &Y) { |
| 420 | FullSourceLoc XL = X.getLocation().asLocation(); |
| 421 | FullSourceLoc YL = Y.getLocation().asLocation(); |
| 422 | if (XL != YL) |
| 423 | return compareCrossTUSourceLocs(XL, YL); |
| 424 | if (X.getBugType() != Y.getBugType()) |
| 425 | return X.getBugType() < Y.getBugType(); |
| 426 | if (X.getCategory() != Y.getCategory()) |
| 427 | return X.getCategory() < Y.getCategory(); |
| 428 | if (X.getVerboseDescription() != Y.getVerboseDescription()) |
| 429 | return X.getVerboseDescription() < Y.getVerboseDescription(); |
| 430 | if (X.getShortDescription() != Y.getShortDescription()) |
| 431 | return X.getShortDescription() < Y.getShortDescription(); |
| 432 | if (X.getDeclWithIssue() != Y.getDeclWithIssue()) { |
| 433 | const Decl *XD = X.getDeclWithIssue(); |
| 434 | if (!XD) |
| 435 | return true; |
| 436 | const Decl *YD = Y.getDeclWithIssue(); |
| 437 | if (!YD) |
| 438 | return false; |
| 439 | SourceLocation XDL = XD->getLocation(); |
| 440 | SourceLocation YDL = YD->getLocation(); |
| 441 | if (XDL != YDL) { |
| 442 | const SourceManager &SM = XL.getManager(); |
| 443 | return compareCrossTUSourceLocs(FullSourceLoc(XDL, SM), |
| 444 | FullSourceLoc(YDL, SM)); |
| 445 | } |
| 446 | } |
| 447 | PathDiagnostic::meta_iterator XI = X.meta_begin(), XE = X.meta_end(); |
| 448 | PathDiagnostic::meta_iterator YI = Y.meta_begin(), YE = Y.meta_end(); |
| 449 | if (XE - XI != YE - YI) |
| 450 | return (XE - XI) < (YE - YI); |
| 451 | for ( ; XI != XE ; ++XI, ++YI) { |
| 452 | if (*XI != *YI) |
| 453 | return (*XI) < (*YI); |
| 454 | } |
| 455 | Optional<bool> b = comparePath(X.path, Y.path); |
| 456 | assert(b.hasValue()); |
| 457 | return b.getValue(); |
| 458 | } |
| 459 | |
| 460 | void PathDiagnosticConsumer::FlushDiagnostics( |
| 461 | PathDiagnosticConsumer::FilesMade *Files) { |
| 462 | if (flushed) |
| 463 | return; |
| 464 | |
| 465 | flushed = true; |
| 466 | |
| 467 | std::vector<const PathDiagnostic *> BatchDiags; |
| 468 | for (const auto &D : Diags) |
| 469 | BatchDiags.push_back(&D); |
| 470 | |
| 471 | |
| 472 | |
| 473 | int (*Comp)(const PathDiagnostic *const *, const PathDiagnostic *const *) = |
| 474 | [](const PathDiagnostic *const *X, const PathDiagnostic *const *Y) { |
| 475 | (0) . __assert_fail ("*X != *Y && \"PathDiagnostics not uniqued!\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 475, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(*X != *Y && "PathDiagnostics not uniqued!"); |
| 476 | if (compare(**X, **Y)) |
| 477 | return -1; |
| 478 | (0) . __assert_fail ("compare(**Y, **X) && \"Not a total order!\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 478, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(compare(**Y, **X) && "Not a total order!"); |
| 479 | return 1; |
| 480 | }; |
| 481 | array_pod_sort(BatchDiags.begin(), BatchDiags.end(), Comp); |
| 482 | |
| 483 | FlushDiagnosticsImpl(BatchDiags, Files); |
| 484 | |
| 485 | |
| 486 | for (const auto D : BatchDiags) |
| 487 | delete D; |
| 488 | |
| 489 | |
| 490 | Diags.clear(); |
| 491 | } |
| 492 | |
| 493 | PathDiagnosticConsumer::FilesMade::~FilesMade() { |
| 494 | for (PDFileEntry &Entry : Set) |
| 495 | Entry.~PDFileEntry(); |
| 496 | } |
| 497 | |
| 498 | void PathDiagnosticConsumer::FilesMade::addDiagnostic(const PathDiagnostic &PD, |
| 499 | StringRef ConsumerName, |
| 500 | StringRef FileName) { |
| 501 | llvm::FoldingSetNodeID NodeID; |
| 502 | NodeID.Add(PD); |
| 503 | void *InsertPos; |
| 504 | PDFileEntry *Entry = Set.FindNodeOrInsertPos(NodeID, InsertPos); |
| 505 | if (!Entry) { |
| 506 | Entry = Alloc.Allocate<PDFileEntry>(); |
| 507 | Entry = new (Entry) PDFileEntry(NodeID); |
| 508 | Set.InsertNode(Entry, InsertPos); |
| 509 | } |
| 510 | |
| 511 | |
| 512 | char *FileName_cstr = (char*) Alloc.Allocate(FileName.size(), 1); |
| 513 | memcpy(FileName_cstr, FileName.data(), FileName.size()); |
| 514 | |
| 515 | Entry->files.push_back(std::make_pair(ConsumerName, |
| 516 | StringRef(FileName_cstr, |
| 517 | FileName.size()))); |
| 518 | } |
| 519 | |
| 520 | PathDiagnosticConsumer::PDFileEntry::ConsumerFiles * |
| 521 | PathDiagnosticConsumer::FilesMade::getFiles(const PathDiagnostic &PD) { |
| 522 | llvm::FoldingSetNodeID NodeID; |
| 523 | NodeID.Add(PD); |
| 524 | void *InsertPos; |
| 525 | PDFileEntry *Entry = Set.FindNodeOrInsertPos(NodeID, InsertPos); |
| 526 | if (!Entry) |
| 527 | return nullptr; |
| 528 | return &Entry->files; |
| 529 | } |
| 530 | |
| 531 | |
| 532 | |
| 533 | |
| 534 | |
| 535 | static SourceLocation getValidSourceLocation(const Stmt* S, |
| 536 | LocationOrAnalysisDeclContext LAC, |
| 537 | bool UseEnd = false) { |
| 538 | SourceLocation L = UseEnd ? S->getEndLoc() : S->getBeginLoc(); |
| 539 | (0) . __assert_fail ("!LAC.isNull() && \"A valid LocationContext or AnalysisDeclContext should \" \"be passed to PathDiagnosticLocation upon creation.\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 540, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(!LAC.isNull() && "A valid LocationContext or AnalysisDeclContext should " |
| 540 | (0) . __assert_fail ("!LAC.isNull() && \"A valid LocationContext or AnalysisDeclContext should \" \"be passed to PathDiagnosticLocation upon creation.\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 540, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true"> "be passed to PathDiagnosticLocation upon creation."); |
| 541 | |
| 542 | |
| 543 | |
| 544 | if (!L.isValid()) { |
| 545 | AnalysisDeclContext *ADC; |
| 546 | if (LAC.is<const LocationContext*>()) |
| 547 | ADC = LAC.get<const LocationContext*>()->getAnalysisDeclContext(); |
| 548 | else |
| 549 | ADC = LAC.get<AnalysisDeclContext*>(); |
| 550 | |
| 551 | ParentMap &PM = ADC->getParentMap(); |
| 552 | |
| 553 | const Stmt *Parent = S; |
| 554 | do { |
| 555 | Parent = PM.getParent(Parent); |
| 556 | |
| 557 | |
| 558 | |
| 559 | |
| 560 | |
| 561 | if (!Parent) { |
| 562 | const Stmt *Body = ADC->getBody(); |
| 563 | if (Body) |
| 564 | L = Body->getBeginLoc(); |
| 565 | else |
| 566 | L = ADC->getDecl()->getEndLoc(); |
| 567 | break; |
| 568 | } |
| 569 | |
| 570 | L = UseEnd ? Parent->getEndLoc() : Parent->getBeginLoc(); |
| 571 | } while (!L.isValid()); |
| 572 | } |
| 573 | |
| 574 | |
| 575 | |
| 576 | return L; |
| 577 | } |
| 578 | |
| 579 | static PathDiagnosticLocation |
| 580 | getLocationForCaller(const StackFrameContext *SFC, |
| 581 | const LocationContext *CallerCtx, |
| 582 | const SourceManager &SM) { |
| 583 | const CFGBlock &Block = *SFC->getCallSiteBlock(); |
| 584 | CFGElement Source = Block[SFC->getIndex()]; |
| 585 | |
| 586 | switch (Source.getKind()) { |
| 587 | case CFGElement::Statement: |
| 588 | case CFGElement::Constructor: |
| 589 | case CFGElement::CXXRecordTypedCall: |
| 590 | return PathDiagnosticLocation(Source.castAs<CFGStmt>().getStmt(), |
| 591 | SM, CallerCtx); |
| 592 | case CFGElement::Initializer: { |
| 593 | const CFGInitializer &Init = Source.castAs<CFGInitializer>(); |
| 594 | return PathDiagnosticLocation(Init.getInitializer()->getInit(), |
| 595 | SM, CallerCtx); |
| 596 | } |
| 597 | case CFGElement::AutomaticObjectDtor: { |
| 598 | const CFGAutomaticObjDtor &Dtor = Source.castAs<CFGAutomaticObjDtor>(); |
| 599 | return PathDiagnosticLocation::createEnd(Dtor.getTriggerStmt(), |
| 600 | SM, CallerCtx); |
| 601 | } |
| 602 | case CFGElement::DeleteDtor: { |
| 603 | const CFGDeleteDtor &Dtor = Source.castAs<CFGDeleteDtor>(); |
| 604 | return PathDiagnosticLocation(Dtor.getDeleteExpr(), SM, CallerCtx); |
| 605 | } |
| 606 | case CFGElement::BaseDtor: |
| 607 | case CFGElement::MemberDtor: { |
| 608 | const AnalysisDeclContext *CallerInfo = CallerCtx->getAnalysisDeclContext(); |
| 609 | if (const Stmt *CallerBody = CallerInfo->getBody()) |
| 610 | return PathDiagnosticLocation::createEnd(CallerBody, SM, CallerCtx); |
| 611 | return PathDiagnosticLocation::create(CallerInfo->getDecl(), SM); |
| 612 | } |
| 613 | case CFGElement::NewAllocator: { |
| 614 | const CFGNewAllocator &Alloc = Source.castAs<CFGNewAllocator>(); |
| 615 | return PathDiagnosticLocation(Alloc.getAllocatorExpr(), SM, CallerCtx); |
| 616 | } |
| 617 | case CFGElement::TemporaryDtor: { |
| 618 | |
| 619 | |
| 620 | |
| 621 | const auto &Dtor = Source.castAs<CFGTemporaryDtor>(); |
| 622 | return PathDiagnosticLocation::createEnd(Dtor.getBindTemporaryExpr(), SM, |
| 623 | CallerCtx); |
| 624 | } |
| 625 | case CFGElement::ScopeBegin: |
| 626 | case CFGElement::ScopeEnd: |
| 627 | llvm_unreachable("not yet implemented!"); |
| 628 | case CFGElement::LifetimeEnds: |
| 629 | case CFGElement::LoopExit: |
| 630 | llvm_unreachable("CFGElement kind should not be on callsite!"); |
| 631 | } |
| 632 | |
| 633 | llvm_unreachable("Unknown CFGElement kind"); |
| 634 | } |
| 635 | |
| 636 | PathDiagnosticLocation |
| 637 | PathDiagnosticLocation::createBegin(const Decl *D, |
| 638 | const SourceManager &SM) { |
| 639 | return PathDiagnosticLocation(D->getBeginLoc(), SM, SingleLocK); |
| 640 | } |
| 641 | |
| 642 | PathDiagnosticLocation |
| 643 | PathDiagnosticLocation::createBegin(const Stmt *S, |
| 644 | const SourceManager &SM, |
| 645 | LocationOrAnalysisDeclContext LAC) { |
| 646 | return PathDiagnosticLocation(getValidSourceLocation(S, LAC), |
| 647 | SM, SingleLocK); |
| 648 | } |
| 649 | |
| 650 | PathDiagnosticLocation |
| 651 | PathDiagnosticLocation::createEnd(const Stmt *S, |
| 652 | const SourceManager &SM, |
| 653 | LocationOrAnalysisDeclContext LAC) { |
| 654 | if (const auto *CS = dyn_cast<CompoundStmt>(S)) |
| 655 | return createEndBrace(CS, SM); |
| 656 | return PathDiagnosticLocation(getValidSourceLocation(S, LAC, ), |
| 657 | SM, SingleLocK); |
| 658 | } |
| 659 | |
| 660 | PathDiagnosticLocation |
| 661 | PathDiagnosticLocation::createOperatorLoc(const BinaryOperator *BO, |
| 662 | const SourceManager &SM) { |
| 663 | return PathDiagnosticLocation(BO->getOperatorLoc(), SM, SingleLocK); |
| 664 | } |
| 665 | |
| 666 | PathDiagnosticLocation |
| 667 | PathDiagnosticLocation::createConditionalColonLoc( |
| 668 | const ConditionalOperator *CO, |
| 669 | const SourceManager &SM) { |
| 670 | return PathDiagnosticLocation(CO->getColonLoc(), SM, SingleLocK); |
| 671 | } |
| 672 | |
| 673 | PathDiagnosticLocation |
| 674 | PathDiagnosticLocation::createMemberLoc(const MemberExpr *ME, |
| 675 | const SourceManager &SM) { |
| 676 | |
| 677 | getMemberLoc().isValid() || ME->getBeginLoc().isValid()", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 677, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(ME->getMemberLoc().isValid() || ME->getBeginLoc().isValid()); |
| 678 | |
| 679 | |
| 680 | |
| 681 | if (ME->getMemberLoc().isValid()) |
| 682 | return PathDiagnosticLocation(ME->getMemberLoc(), SM, SingleLocK); |
| 683 | |
| 684 | return PathDiagnosticLocation(ME->getBeginLoc(), SM, SingleLocK); |
| 685 | } |
| 686 | |
| 687 | PathDiagnosticLocation |
| 688 | PathDiagnosticLocation::createBeginBrace(const CompoundStmt *CS, |
| 689 | const SourceManager &SM) { |
| 690 | SourceLocation L = CS->getLBracLoc(); |
| 691 | return PathDiagnosticLocation(L, SM, SingleLocK); |
| 692 | } |
| 693 | |
| 694 | PathDiagnosticLocation |
| 695 | PathDiagnosticLocation::createEndBrace(const CompoundStmt *CS, |
| 696 | const SourceManager &SM) { |
| 697 | SourceLocation L = CS->getRBracLoc(); |
| 698 | return PathDiagnosticLocation(L, SM, SingleLocK); |
| 699 | } |
| 700 | |
| 701 | PathDiagnosticLocation |
| 702 | PathDiagnosticLocation::createDeclBegin(const LocationContext *LC, |
| 703 | const SourceManager &SM) { |
| 704 | |
| 705 | if (const auto *CS = dyn_cast_or_null<CompoundStmt>(LC->getDecl()->getBody())) |
| 706 | if (!CS->body_empty()) { |
| 707 | SourceLocation Loc = (*CS->body_begin())->getBeginLoc(); |
| 708 | return PathDiagnosticLocation(Loc, SM, SingleLocK); |
| 709 | } |
| 710 | |
| 711 | return PathDiagnosticLocation(); |
| 712 | } |
| 713 | |
| 714 | PathDiagnosticLocation |
| 715 | PathDiagnosticLocation::createDeclEnd(const LocationContext *LC, |
| 716 | const SourceManager &SM) { |
| 717 | SourceLocation L = LC->getDecl()->getBodyRBrace(); |
| 718 | return PathDiagnosticLocation(L, SM, SingleLocK); |
| 719 | } |
| 720 | |
| 721 | PathDiagnosticLocation |
| 722 | PathDiagnosticLocation::create(const ProgramPoint& P, |
| 723 | const SourceManager &SMng) { |
| 724 | const Stmt* S = nullptr; |
| 725 | if (Optional<BlockEdge> BE = P.getAs<BlockEdge>()) { |
| 726 | const CFGBlock *BSrc = BE->getSrc(); |
| 727 | S = BSrc->getTerminatorCondition(); |
| 728 | } else if (Optional<StmtPoint> SP = P.getAs<StmtPoint>()) { |
| 729 | S = SP->getStmt(); |
| 730 | if (P.getAs<PostStmtPurgeDeadSymbols>()) |
| 731 | return PathDiagnosticLocation::createEnd(S, SMng, P.getLocationContext()); |
| 732 | } else if (Optional<PostInitializer> PIP = P.getAs<PostInitializer>()) { |
| 733 | return PathDiagnosticLocation(PIP->getInitializer()->getSourceLocation(), |
| 734 | SMng); |
| 735 | } else if (Optional<PreImplicitCall> PIC = P.getAs<PreImplicitCall>()) { |
| 736 | return PathDiagnosticLocation(PIC->getLocation(), SMng); |
| 737 | } else if (Optional<PostImplicitCall> PIE = P.getAs<PostImplicitCall>()) { |
| 738 | return PathDiagnosticLocation(PIE->getLocation(), SMng); |
| 739 | } else if (Optional<CallEnter> CE = P.getAs<CallEnter>()) { |
| 740 | return getLocationForCaller(CE->getCalleeContext(), |
| 741 | CE->getLocationContext(), |
| 742 | SMng); |
| 743 | } else if (Optional<CallExitEnd> CEE = P.getAs<CallExitEnd>()) { |
| 744 | return getLocationForCaller(CEE->getCalleeContext(), |
| 745 | CEE->getLocationContext(), |
| 746 | SMng); |
| 747 | } else if (auto CEB = P.getAs<CallExitBegin>()) { |
| 748 | if (const ReturnStmt *RS = CEB->getReturnStmt()) |
| 749 | return PathDiagnosticLocation::createBegin(RS, SMng, |
| 750 | CEB->getLocationContext()); |
| 751 | return PathDiagnosticLocation( |
| 752 | CEB->getLocationContext()->getDecl()->getSourceRange().getEnd(), SMng); |
| 753 | } else if (Optional<BlockEntrance> BE = P.getAs<BlockEntrance>()) { |
| 754 | CFGElement BlockFront = BE->getBlock()->front(); |
| 755 | if (auto StmtElt = BlockFront.getAs<CFGStmt>()) { |
| 756 | return PathDiagnosticLocation(StmtElt->getStmt()->getBeginLoc(), SMng); |
| 757 | } else if (auto NewAllocElt = BlockFront.getAs<CFGNewAllocator>()) { |
| 758 | return PathDiagnosticLocation( |
| 759 | NewAllocElt->getAllocatorExpr()->getBeginLoc(), SMng); |
| 760 | } |
| 761 | llvm_unreachable("Unexpected CFG element at front of block"); |
| 762 | } else { |
| 763 | llvm_unreachable("Unexpected ProgramPoint"); |
| 764 | } |
| 765 | |
| 766 | return PathDiagnosticLocation(S, SMng, P.getLocationContext()); |
| 767 | } |
| 768 | |
| 769 | static const LocationContext * |
| 770 | findTopAutosynthesizedParentContext(const LocationContext *LC) { |
| 771 | getAnalysisDeclContext()->isBodyAutosynthesized()", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 771, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(LC->getAnalysisDeclContext()->isBodyAutosynthesized()); |
| 772 | const LocationContext *ParentLC = LC->getParent(); |
| 773 | (0) . __assert_fail ("ParentLC && \"We don't start analysis from autosynthesized code\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 773, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(ParentLC && "We don't start analysis from autosynthesized code"); |
| 774 | while (ParentLC->getAnalysisDeclContext()->isBodyAutosynthesized()) { |
| 775 | LC = ParentLC; |
| 776 | ParentLC = LC->getParent(); |
| 777 | (0) . __assert_fail ("ParentLC && \"We don't start analysis from autosynthesized code\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 777, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(ParentLC && "We don't start analysis from autosynthesized code"); |
| 778 | } |
| 779 | return LC; |
| 780 | } |
| 781 | |
| 782 | const Stmt *PathDiagnosticLocation::getStmt(const ExplodedNode *N) { |
| 783 | |
| 784 | |
| 785 | |
| 786 | const LocationContext *LC = N->getLocationContext(); |
| 787 | if (LC->getAnalysisDeclContext()->isBodyAutosynthesized()) { |
| 788 | |
| 789 | return cast<StackFrameContext>(findTopAutosynthesizedParentContext(LC)) |
| 790 | ->getCallSite(); |
| 791 | } |
| 792 | |
| 793 | ProgramPoint P = N->getLocation(); |
| 794 | if (auto SP = P.getAs<StmtPoint>()) |
| 795 | return SP->getStmt(); |
| 796 | if (auto BE = P.getAs<BlockEdge>()) |
| 797 | return BE->getSrc()->getTerminator(); |
| 798 | if (auto CE = P.getAs<CallEnter>()) |
| 799 | return CE->getCallExpr(); |
| 800 | if (auto CEE = P.getAs<CallExitEnd>()) |
| 801 | return CEE->getCalleeContext()->getCallSite(); |
| 802 | if (auto PIPP = P.getAs<PostInitializer>()) |
| 803 | return PIPP->getInitializer()->getInit(); |
| 804 | if (auto CEB = P.getAs<CallExitBegin>()) |
| 805 | return CEB->getReturnStmt(); |
| 806 | if (auto FEP = P.getAs<FunctionExitPoint>()) |
| 807 | return FEP->getStmt(); |
| 808 | |
| 809 | return nullptr; |
| 810 | } |
| 811 | |
| 812 | const Stmt *PathDiagnosticLocation::getNextStmt(const ExplodedNode *N) { |
| 813 | for (N = N->getFirstSucc(); N; N = N->getFirstSucc()) { |
| 814 | if (const Stmt *S = getStmt(N)) { |
| 815 | |
| 816 | |
| 817 | switch (S->getStmtClass()) { |
| 818 | case Stmt::ChooseExprClass: |
| 819 | case Stmt::BinaryConditionalOperatorClass: |
| 820 | case Stmt::ConditionalOperatorClass: |
| 821 | continue; |
| 822 | case Stmt::BinaryOperatorClass: { |
| 823 | BinaryOperatorKind Op = cast<BinaryOperator>(S)->getOpcode(); |
| 824 | if (Op == BO_LAnd || Op == BO_LOr) |
| 825 | continue; |
| 826 | break; |
| 827 | } |
| 828 | default: |
| 829 | break; |
| 830 | } |
| 831 | |
| 832 | return S; |
| 833 | } |
| 834 | } |
| 835 | |
| 836 | return nullptr; |
| 837 | } |
| 838 | |
| 839 | PathDiagnosticLocation |
| 840 | PathDiagnosticLocation::createEndOfPath(const ExplodedNode *N, |
| 841 | const SourceManager &SM) { |
| 842 | (0) . __assert_fail ("N && \"Cannot create a location with a null node.\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Core/PathDiagnostic.cpp", 842, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(N && "Cannot create a location with a null node."); |
| 843 | const Stmt *S = getStmt(N); |
| 844 | const LocationContext *LC = N->getLocationContext(); |
| 845 | |
| 846 | if (!S) { |
| 847 | |
| 848 | if (Optional<PreImplicitCall> PIE = N->getLocationAs<PreImplicitCall>()) |
| 849 | return PathDiagnosticLocation(PIE->getLocation(), SM); |
| 850 | if (auto FE = N->getLocationAs<FunctionExitPoint>()) { |
| 851 | if (const ReturnStmt *RS = FE->getStmt()) |
| 852 | return PathDiagnosticLocation::createBegin(RS, SM, LC); |
| 853 | } |
| 854 | S = getNextStmt(N); |
| 855 | } |
| 856 | |
| 857 | if (S) { |
| 858 | ProgramPoint P = N->getLocation(); |
| 859 | |
| 860 | |
| 861 | if (const auto *ME = dyn_cast<MemberExpr>(S)) |
| 862 | return PathDiagnosticLocation::createMemberLoc(ME, SM); |
| 863 | |
| 864 | |
| 865 | if (const auto *B = dyn_cast<BinaryOperator>(S)) |
| 866 | return PathDiagnosticLocation::createOperatorLoc(B, SM); |
| 867 | |
| 868 | if (P.getAs<PostStmtPurgeDeadSymbols>()) |
| 869 | return PathDiagnosticLocation::createEnd(S, SM, LC); |
| 870 | |
| 871 | if (S->getBeginLoc().isValid()) |
| 872 | return PathDiagnosticLocation(S, SM, LC); |
| 873 | return PathDiagnosticLocation(getValidSourceLocation(S, LC), SM); |
| 874 | } |
| 875 | |
| 876 | return createDeclEnd(N->getLocationContext(), SM); |
| 877 | } |
| 878 | |
| 879 | PathDiagnosticLocation PathDiagnosticLocation::createSingleLocation( |
| 880 | const PathDiagnosticLocation &PDL) { |
| 881 | FullSourceLoc L = PDL.asLocation(); |
| 882 | return PathDiagnosticLocation(L, L.getManager(), SingleLocK); |
| 883 | } |
| 884 | |
| 885 | FullSourceLoc |
| 886 | PathDiagnosticLocation::genLocation(SourceLocation L, |
| 887 | LocationOrAnalysisDeclContext LAC) const { |
| 888 | assert(isValid()); |
| 889 | |
| 890 | |
| 891 | switch (K) { |
| 892 | case SingleLocK: |
| 893 | case RangeK: |
| 894 | break; |
| 895 | case StmtK: |
| 896 | |
| 897 | if (!S) |
| 898 | break; |
| 899 | return FullSourceLoc(getValidSourceLocation(S, LAC), |
| 900 | const_cast<SourceManager&>(*SM)); |
| 901 | case DeclK: |
| 902 | |
| 903 | if (!D) |
| 904 | break; |
| 905 | return FullSourceLoc(D->getLocation(), const_cast<SourceManager&>(*SM)); |
| 906 | } |
| 907 | |
| 908 | return FullSourceLoc(L, const_cast<SourceManager&>(*SM)); |
| 909 | } |
| 910 | |
| 911 | PathDiagnosticRange |
| 912 | PathDiagnosticLocation::genRange(LocationOrAnalysisDeclContext LAC) const { |
| 913 | assert(isValid()); |
| 914 | |
| 915 | |
| 916 | switch (K) { |
| 917 | case SingleLocK: |
| 918 | return PathDiagnosticRange(SourceRange(Loc,Loc), true); |
| 919 | case RangeK: |
| 920 | break; |
| 921 | case StmtK: { |
| 922 | const Stmt *S = asStmt(); |
| 923 | switch (S->getStmtClass()) { |
| 924 | default: |
| 925 | break; |
| 926 | case Stmt::DeclStmtClass: { |
| 927 | const auto *DS = cast<DeclStmt>(S); |
| 928 | if (DS->isSingleDecl()) { |
| 929 | |
| 930 | return SourceRange(DS->getBeginLoc(), |
| 931 | DS->getSingleDecl()->getLocation()); |
| 932 | } |
| 933 | break; |
| 934 | } |
| 935 | |
| 936 | |
| 937 | case Stmt::IfStmtClass: |
| 938 | case Stmt::WhileStmtClass: |
| 939 | case Stmt::DoStmtClass: |
| 940 | case Stmt::ForStmtClass: |
| 941 | case Stmt::ChooseExprClass: |
| 942 | case Stmt::IndirectGotoStmtClass: |
| 943 | case Stmt::SwitchStmtClass: |
| 944 | case Stmt::BinaryConditionalOperatorClass: |
| 945 | case Stmt::ConditionalOperatorClass: |
| 946 | case Stmt::ObjCForCollectionStmtClass: { |
| 947 | SourceLocation L = getValidSourceLocation(S, LAC); |
| 948 | return SourceRange(L, L); |
| 949 | } |
| 950 | } |
| 951 | SourceRange R = S->getSourceRange(); |
| 952 | if (R.isValid()) |
| 953 | return R; |
| 954 | break; |
| 955 | } |
| 956 | case DeclK: |
| 957 | if (const auto *MD = dyn_cast<ObjCMethodDecl>(D)) |
| 958 | return MD->getSourceRange(); |
| 959 | if (const auto *FD = dyn_cast<FunctionDecl>(D)) { |
| 960 | if (Stmt *Body = FD->getBody()) |
| 961 | return Body->getSourceRange(); |
| 962 | } |
| 963 | else { |
| 964 | SourceLocation L = D->getLocation(); |
| 965 | return PathDiagnosticRange(SourceRange(L, L), true); |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | return SourceRange(Loc, Loc); |
| 970 | } |
| 971 | |
| 972 | void PathDiagnosticLocation::flatten() { |
| 973 | if (K == StmtK) { |
| 974 | K = RangeK; |
| 975 | S = nullptr; |
| 976 | D = nullptr; |
| 977 | } |
| 978 | else if (K == DeclK) { |
| 979 | K = SingleLocK; |
| 980 | S = nullptr; |
| 981 | D = nullptr; |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | |
| 986 | |
| 987 | |
| 988 | |
| 989 | std::shared_ptr<PathDiagnosticCallPiece> |
| 990 | PathDiagnosticCallPiece::construct(const CallExitEnd &CE, |
| 991 | const SourceManager &SM) { |
| 992 | const Decl *caller = CE.getLocationContext()->getDecl(); |
| 993 | PathDiagnosticLocation pos = getLocationForCaller(CE.getCalleeContext(), |
| 994 | CE.getLocationContext(), |
| 995 | SM); |
| 996 | return std::shared_ptr<PathDiagnosticCallPiece>( |
| 997 | new PathDiagnosticCallPiece(caller, pos)); |
| 998 | } |
| 999 | |
| 1000 | PathDiagnosticCallPiece * |
| 1001 | PathDiagnosticCallPiece::construct(PathPieces &path, |
| 1002 | const Decl *caller) { |
| 1003 | std::shared_ptr<PathDiagnosticCallPiece> C( |
| 1004 | new PathDiagnosticCallPiece(path, caller)); |
| 1005 | path.clear(); |
| 1006 | auto *R = C.get(); |
| 1007 | path.push_front(std::move(C)); |
| 1008 | return R; |
| 1009 | } |
| 1010 | |
| 1011 | void PathDiagnosticCallPiece::setCallee(const CallEnter &CE, |
| 1012 | const SourceManager &SM) { |
| 1013 | const StackFrameContext *CalleeCtx = CE.getCalleeContext(); |
| 1014 | Callee = CalleeCtx->getDecl(); |
| 1015 | |
| 1016 | callEnterWithin = PathDiagnosticLocation::createBegin(Callee, SM); |
| 1017 | callEnter = getLocationForCaller(CalleeCtx, CE.getLocationContext(), SM); |
| 1018 | |
| 1019 | |
| 1020 | |
| 1021 | |
| 1022 | |
| 1023 | |
| 1024 | |
| 1025 | if (const auto *MD = dyn_cast<ObjCMethodDecl>(Callee)) |
| 1026 | IsCalleeAnAutosynthesizedPropertyAccessor = ( |
| 1027 | MD->isPropertyAccessor() && |
| 1028 | CalleeCtx->getAnalysisDeclContext()->isBodyAutosynthesized()); |
| 1029 | } |
| 1030 | |
| 1031 | static void describeTemplateParameters(raw_ostream &Out, |
| 1032 | const ArrayRef<TemplateArgument> TAList, |
| 1033 | const LangOptions &LO, |
| 1034 | StringRef Prefix = StringRef(), |
| 1035 | StringRef Postfix = StringRef()); |
| 1036 | |
| 1037 | static void describeTemplateParameter(raw_ostream &Out, |
| 1038 | const TemplateArgument &TArg, |
| 1039 | const LangOptions &LO) { |
| 1040 | |
| 1041 | if (TArg.getKind() == TemplateArgument::ArgKind::Pack) { |
| 1042 | describeTemplateParameters(Out, TArg.getPackAsArray(), LO); |
| 1043 | } else { |
| 1044 | TArg.print(PrintingPolicy(LO), Out); |
| 1045 | } |
| 1046 | } |
| 1047 | |
| 1048 | static void describeTemplateParameters(raw_ostream &Out, |
| 1049 | const ArrayRef<TemplateArgument> TAList, |
| 1050 | const LangOptions &LO, |
| 1051 | StringRef Prefix, StringRef Postfix) { |
| 1052 | if (TAList.empty()) |
| 1053 | return; |
| 1054 | |
| 1055 | Out << Prefix; |
| 1056 | for (int I = 0, Last = TAList.size() - 1; I != Last; ++I) { |
| 1057 | describeTemplateParameter(Out, TAList[I], LO); |
| 1058 | Out << ", "; |
| 1059 | } |
| 1060 | describeTemplateParameter(Out, TAList[TAList.size() - 1], LO); |
| 1061 | Out << Postfix; |
| 1062 | } |
| 1063 | |
| 1064 | static void describeClass(raw_ostream &Out, const CXXRecordDecl *D, |
| 1065 | StringRef Prefix = StringRef()) { |
| 1066 | if (!D->getIdentifier()) |
| 1067 | return; |
| 1068 | Out << Prefix << '\'' << *D; |
| 1069 | if (const auto T = dyn_cast<ClassTemplateSpecializationDecl>(D)) |
| 1070 | describeTemplateParameters(Out, T->getTemplateArgs().asArray(), |
| 1071 | D->getASTContext().getLangOpts(), "<", ">"); |
| 1072 | |
| 1073 | Out << '\''; |
| 1074 | } |
| 1075 | |
| 1076 | static bool describeCodeDecl(raw_ostream &Out, const Decl *D, |
| 1077 | bool ExtendedDescription, |
| 1078 | StringRef Prefix = StringRef()) { |
| 1079 | if (!D) |
| 1080 | return false; |
| 1081 | |
| 1082 | if (isa<BlockDecl>(D)) { |
| 1083 | if (ExtendedDescription) |
| 1084 | Out << Prefix << "anonymous block"; |
| 1085 | return ExtendedDescription; |
| 1086 | } |
| 1087 | |
| 1088 | if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) { |
| 1089 | Out << Prefix; |
| 1090 | if (ExtendedDescription && !MD->isUserProvided()) { |
| 1091 | if (MD->isExplicitlyDefaulted()) |
| 1092 | Out << "defaulted "; |
| 1093 | else |
| 1094 | Out << "implicit "; |
| 1095 | } |
| 1096 | |
| 1097 | if (const auto *CD = dyn_cast<CXXConstructorDecl>(MD)) { |
| 1098 | if (CD->isDefaultConstructor()) |
| 1099 | Out << "default "; |
| 1100 | else if (CD->isCopyConstructor()) |
| 1101 | Out << "copy "; |
| 1102 | else if (CD->isMoveConstructor()) |
| 1103 | Out << "move "; |
| 1104 | |
| 1105 | Out << "constructor"; |
| 1106 | describeClass(Out, MD->getParent(), " for "); |
| 1107 | } else if (isa<CXXDestructorDecl>(MD)) { |
| 1108 | if (!MD->isUserProvided()) { |
| 1109 | Out << "destructor"; |
| 1110 | describeClass(Out, MD->getParent(), " for "); |
| 1111 | } else { |
| 1112 | |
| 1113 | Out << "'" << *MD << "'"; |
| 1114 | } |
| 1115 | } else if (MD->isCopyAssignmentOperator()) { |
| 1116 | Out << "copy assignment operator"; |
| 1117 | describeClass(Out, MD->getParent(), " for "); |
| 1118 | } else if (MD->isMoveAssignmentOperator()) { |
| 1119 | Out << "move assignment operator"; |
| 1120 | describeClass(Out, MD->getParent(), " for "); |
| 1121 | } else { |
| 1122 | if (MD->getParent()->getIdentifier()) |
| 1123 | Out << "'" << *MD->getParent() << "::" << *MD << "'"; |
| 1124 | else |
| 1125 | Out << "'" << *MD << "'"; |
| 1126 | } |
| 1127 | |
| 1128 | return true; |
| 1129 | } |
| 1130 | |
| 1131 | Out << Prefix << '\'' << cast<NamedDecl>(*D); |
| 1132 | |
| 1133 | |
| 1134 | if (const auto FD = dyn_cast<FunctionDecl>(D)) |
| 1135 | if (const TemplateArgumentList *TAList = |
| 1136 | FD->getTemplateSpecializationArgs()) |
| 1137 | describeTemplateParameters(Out, TAList->asArray(), |
| 1138 | FD->getASTContext().getLangOpts(), "<", ">"); |
| 1139 | |
| 1140 | Out << '\''; |
| 1141 | return true; |
| 1142 | } |
| 1143 | |
| 1144 | std::shared_ptr<PathDiagnosticEventPiece> |
| 1145 | PathDiagnosticCallPiece::getCallEnterEvent() const { |
| 1146 | |
| 1147 | |
| 1148 | |
| 1149 | |
| 1150 | if (!Callee || IsCalleeAnAutosynthesizedPropertyAccessor) |
| 1151 | return nullptr; |
| 1152 | |
| 1153 | SmallString<256> buf; |
| 1154 | llvm::raw_svector_ostream Out(buf); |
| 1155 | |
| 1156 | Out << "Calling "; |
| 1157 | describeCodeDecl(Out, Callee, ); |
| 1158 | |
| 1159 | assert(callEnter.asLocation().isValid()); |
| 1160 | return std::make_shared<PathDiagnosticEventPiece>(callEnter, Out.str()); |
| 1161 | } |
| 1162 | |
| 1163 | std::shared_ptr<PathDiagnosticEventPiece> |
| 1164 | PathDiagnosticCallPiece::getCallEnterWithinCallerEvent() const { |
| 1165 | if (!callEnterWithin.asLocation().isValid()) |
| 1166 | return nullptr; |
| 1167 | if (Callee->isImplicit() || !Callee->hasBody()) |
| 1168 | return nullptr; |
| 1169 | if (const auto *MD = dyn_cast<CXXMethodDecl>(Callee)) |
| 1170 | if (MD->isDefaulted()) |
| 1171 | return nullptr; |
| 1172 | |
| 1173 | SmallString<256> buf; |
| 1174 | llvm::raw_svector_ostream Out(buf); |
| 1175 | |
| 1176 | Out << "Entered call"; |
| 1177 | describeCodeDecl(Out, Caller, , " from "); |
| 1178 | |
| 1179 | return std::make_shared<PathDiagnosticEventPiece>(callEnterWithin, Out.str()); |
| 1180 | } |
| 1181 | |
| 1182 | std::shared_ptr<PathDiagnosticEventPiece> |
| 1183 | PathDiagnosticCallPiece::getCallExitEvent() const { |
| 1184 | |
| 1185 | |
| 1186 | |
| 1187 | |
| 1188 | if (NoExit || IsCalleeAnAutosynthesizedPropertyAccessor) |
| 1189 | return nullptr; |
| 1190 | |
| 1191 | SmallString<256> buf; |
| 1192 | llvm::raw_svector_ostream Out(buf); |
| 1193 | |
| 1194 | if (!CallStackMessage.empty()) { |
| 1195 | Out << CallStackMessage; |
| 1196 | } else { |
| 1197 | bool DidDescribe = describeCodeDecl(Out, Callee, |
| 1198 | , |
| 1199 | "Returning from "); |
| 1200 | if (!DidDescribe) |
| 1201 | Out << "Returning to caller"; |
| 1202 | } |
| 1203 | |
| 1204 | assert(callReturn.asLocation().isValid()); |
| 1205 | return std::make_shared<PathDiagnosticEventPiece>(callReturn, Out.str()); |
| 1206 | } |
| 1207 | |
| 1208 | static void compute_path_size(const PathPieces &pieces, unsigned &size) { |
| 1209 | for (const auto &I : pieces) { |
| 1210 | const PathDiagnosticPiece *piece = I.get(); |
| 1211 | if (const auto *cp = dyn_cast<PathDiagnosticCallPiece>(piece)) |
| 1212 | compute_path_size(cp->path, size); |
| 1213 | else |
| 1214 | ++size; |
| 1215 | } |
| 1216 | } |
| 1217 | |
| 1218 | unsigned PathDiagnostic::full_size() { |
| 1219 | unsigned size = 0; |
| 1220 | compute_path_size(path, size); |
| 1221 | return size; |
| 1222 | } |
| 1223 | |
| 1224 | |
| 1225 | |
| 1226 | |
| 1227 | |
| 1228 | void PathDiagnosticLocation::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1229 | ID.AddInteger(Range.getBegin().getRawEncoding()); |
| 1230 | ID.AddInteger(Range.getEnd().getRawEncoding()); |
| 1231 | ID.AddInteger(Loc.getRawEncoding()); |
| 1232 | } |
| 1233 | |
| 1234 | void PathDiagnosticPiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1235 | ID.AddInteger((unsigned) getKind()); |
| 1236 | ID.AddString(str); |
| 1237 | |
| 1238 | ID.AddInteger((unsigned) getDisplayHint()); |
| 1239 | ArrayRef<SourceRange> Ranges = getRanges(); |
| 1240 | for (const auto &I : Ranges) { |
| 1241 | ID.AddInteger(I.getBegin().getRawEncoding()); |
| 1242 | ID.AddInteger(I.getEnd().getRawEncoding()); |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | void PathDiagnosticCallPiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1247 | PathDiagnosticPiece::Profile(ID); |
| 1248 | for (const auto &I : path) |
| 1249 | ID.Add(*I); |
| 1250 | } |
| 1251 | |
| 1252 | void PathDiagnosticSpotPiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1253 | PathDiagnosticPiece::Profile(ID); |
| 1254 | ID.Add(Pos); |
| 1255 | } |
| 1256 | |
| 1257 | void PathDiagnosticControlFlowPiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1258 | PathDiagnosticPiece::Profile(ID); |
| 1259 | for (const auto &I : *this) |
| 1260 | ID.Add(I); |
| 1261 | } |
| 1262 | |
| 1263 | void PathDiagnosticMacroPiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1264 | PathDiagnosticSpotPiece::Profile(ID); |
| 1265 | for (const auto &I : subPieces) |
| 1266 | ID.Add(*I); |
| 1267 | } |
| 1268 | |
| 1269 | void PathDiagnosticNotePiece::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1270 | PathDiagnosticSpotPiece::Profile(ID); |
| 1271 | } |
| 1272 | |
| 1273 | void PathDiagnostic::Profile(llvm::FoldingSetNodeID &ID) const { |
| 1274 | ID.Add(getLocation()); |
| 1275 | ID.AddString(BugType); |
| 1276 | ID.AddString(VerboseDesc); |
| 1277 | ID.AddString(Category); |
| 1278 | } |
| 1279 | |
| 1280 | void PathDiagnostic::FullProfile(llvm::FoldingSetNodeID &ID) const { |
| 1281 | Profile(ID); |
| 1282 | for (const auto &I : path) |
| 1283 | ID.Add(*I); |
| 1284 | for (meta_iterator I = meta_begin(), E = meta_end(); I != E; ++I) |
| 1285 | ID.AddString(*I); |
| 1286 | } |
| 1287 | |
| 1288 | StackHintGenerator::~StackHintGenerator() = default; |
| 1289 | |
| 1290 | std::string StackHintGeneratorForSymbol::getMessage(const ExplodedNode *N){ |
| 1291 | if (!N) |
| 1292 | return getMessageForSymbolNotFound(); |
| 1293 | |
| 1294 | ProgramPoint P = N->getLocation(); |
| 1295 | CallExitEnd CExit = P.castAs<CallExitEnd>(); |
| 1296 | |
| 1297 | |
| 1298 | const Stmt *CallSite = CExit.getCalleeContext()->getCallSite(); |
| 1299 | const auto *CE = dyn_cast_or_null<CallExpr>(CallSite); |
| 1300 | if (!CE) |
| 1301 | return {}; |
| 1302 | |
| 1303 | |
| 1304 | unsigned ArgIndex = 0; |
| 1305 | for (CallExpr::const_arg_iterator I = CE->arg_begin(), |
| 1306 | E = CE->arg_end(); I != E; ++I, ++ArgIndex){ |
| 1307 | SVal SV = N->getSVal(*I); |
| 1308 | |
| 1309 | |
| 1310 | SymbolRef AS = SV.getAsLocSymbol(); |
| 1311 | if (AS == Sym) { |
| 1312 | return getMessageForArg(*I, ArgIndex); |
| 1313 | } |
| 1314 | |
| 1315 | |
| 1316 | if (Optional<loc::MemRegionVal> Reg = SV.getAs<loc::MemRegionVal>()) { |
| 1317 | |
| 1318 | if ((*I)->getType()->isVoidPointerType()) |
| 1319 | continue; |
| 1320 | SVal PSV = N->getState()->getSVal(Reg->getRegion()); |
| 1321 | SymbolRef AS = PSV.getAsLocSymbol(); |
| 1322 | if (AS == Sym) { |
| 1323 | return getMessageForArg(*I, ArgIndex); |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | |
| 1329 | SVal SV = N->getSVal(CE); |
| 1330 | SymbolRef RetSym = SV.getAsLocSymbol(); |
| 1331 | if (RetSym == Sym) { |
| 1332 | return getMessageForReturn(CE); |
| 1333 | } |
| 1334 | |
| 1335 | return getMessageForSymbolNotFound(); |
| 1336 | } |
| 1337 | |
| 1338 | std::string StackHintGeneratorForSymbol::getMessageForArg(const Expr *ArgE, |
| 1339 | unsigned ArgIndex) { |
| 1340 | |
| 1341 | ++ArgIndex; |
| 1342 | |
| 1343 | SmallString<200> buf; |
| 1344 | llvm::raw_svector_ostream os(buf); |
| 1345 | |
| 1346 | os << Msg << " via " << ArgIndex << llvm::getOrdinalSuffix(ArgIndex) |
| 1347 | << " parameter"; |
| 1348 | |
| 1349 | return os.str(); |
| 1350 | } |
| 1351 | |
| 1352 | LLVM_DUMP_METHOD void PathPieces::dump() const { |
| 1353 | unsigned index = 0; |
| 1354 | for (PathPieces::const_iterator I = begin(), E = end(); I != E; ++I) { |
| 1355 | llvm::errs() << "[" << index++ << "] "; |
| 1356 | (*I)->dump(); |
| 1357 | llvm::errs() << "\n"; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | LLVM_DUMP_METHOD void PathDiagnosticCallPiece::dump() const { |
| 1362 | llvm::errs() << "CALL\n--------------\n"; |
| 1363 | |
| 1364 | if (const Stmt *SLoc = getLocation().getStmtOrNull()) |
| 1365 | SLoc->dump(); |
| 1366 | else if (const auto *ND = dyn_cast_or_null<NamedDecl>(getCallee())) |
| 1367 | llvm::errs() << *ND << "\n"; |
| 1368 | else |
| 1369 | getLocation().dump(); |
| 1370 | } |
| 1371 | |
| 1372 | LLVM_DUMP_METHOD void PathDiagnosticEventPiece::dump() const { |
| 1373 | llvm::errs() << "EVENT\n--------------\n"; |
| 1374 | llvm::errs() << getString() << "\n"; |
| 1375 | llvm::errs() << " ---- at ----\n"; |
| 1376 | getLocation().dump(); |
| 1377 | } |
| 1378 | |
| 1379 | LLVM_DUMP_METHOD void PathDiagnosticControlFlowPiece::dump() const { |
| 1380 | llvm::errs() << "CONTROL\n--------------\n"; |
| 1381 | getStartLocation().dump(); |
| 1382 | llvm::errs() << " ---- to ----\n"; |
| 1383 | getEndLocation().dump(); |
| 1384 | } |
| 1385 | |
| 1386 | LLVM_DUMP_METHOD void PathDiagnosticMacroPiece::dump() const { |
| 1387 | llvm::errs() << "MACRO\n--------------\n"; |
| 1388 | |
| 1389 | } |
| 1390 | |
| 1391 | LLVM_DUMP_METHOD void PathDiagnosticNotePiece::dump() const { |
| 1392 | llvm::errs() << "NOTE\n--------------\n"; |
| 1393 | llvm::errs() << getString() << "\n"; |
| 1394 | llvm::errs() << " ---- at ----\n"; |
| 1395 | getLocation().dump(); |
| 1396 | } |
| 1397 | |
| 1398 | LLVM_DUMP_METHOD void PathDiagnosticLocation::dump() const { |
| 1399 | if (!isValid()) { |
| 1400 | llvm::errs() << "<INVALID>\n"; |
| 1401 | return; |
| 1402 | } |
| 1403 | |
| 1404 | switch (K) { |
| 1405 | case RangeK: |
| 1406 | |
| 1407 | llvm::errs() << "<range>\n"; |
| 1408 | break; |
| 1409 | case SingleLocK: |
| 1410 | asLocation().dump(); |
| 1411 | llvm::errs() << "\n"; |
| 1412 | break; |
| 1413 | case StmtK: |
| 1414 | if (S) |
| 1415 | S->dump(); |
| 1416 | else |
| 1417 | llvm::errs() << "<NULL STMT>\n"; |
| 1418 | break; |
| 1419 | case DeclK: |
| 1420 | if (const auto *ND = dyn_cast_or_null<NamedDecl>(D)) |
| 1421 | llvm::errs() << *ND << "\n"; |
| 1422 | else if (isa<BlockDecl>(D)) |
| 1423 | |
| 1424 | llvm::errs() << "<block>\n"; |
| 1425 | else if (D) |
| 1426 | llvm::errs() << "<unknown decl>\n"; |
| 1427 | else |
| 1428 | llvm::errs() << "<NULL DECL>\n"; |
| 1429 | break; |
| 1430 | } |
| 1431 | } |
| 1432 | |