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12 | |
13 | #include "clang/StaticAnalyzer/Frontend/AnalysisConsumer.h" |
14 | #include "ModelInjector.h" |
15 | #include "clang/AST/Decl.h" |
16 | #include "clang/AST/DeclCXX.h" |
17 | #include "clang/AST/DeclObjC.h" |
18 | #include "clang/AST/RecursiveASTVisitor.h" |
19 | #include "clang/Analysis/Analyses/LiveVariables.h" |
20 | #include "clang/Analysis/CFG.h" |
21 | #include "clang/Analysis/CallGraph.h" |
22 | #include "clang/Analysis/CodeInjector.h" |
23 | #include "clang/Basic/SourceManager.h" |
24 | #include "clang/CrossTU/CrossTranslationUnit.h" |
25 | #include "clang/Frontend/CompilerInstance.h" |
26 | #include "clang/Lex/Preprocessor.h" |
27 | #include "clang/StaticAnalyzer/Checkers/LocalCheckers.h" |
28 | #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h" |
29 | #include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h" |
30 | #include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h" |
31 | #include "clang/StaticAnalyzer/Core/CheckerManager.h" |
32 | #include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h" |
33 | #include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" |
34 | #include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" |
35 | #include "clang/StaticAnalyzer/Frontend/CheckerRegistration.h" |
36 | #include "llvm/ADT/PostOrderIterator.h" |
37 | #include "llvm/ADT/Statistic.h" |
38 | #include "llvm/Support/FileSystem.h" |
39 | #include "llvm/Support/Path.h" |
40 | #include "llvm/Support/Program.h" |
41 | #include "llvm/Support/Timer.h" |
42 | #include "llvm/Support/raw_ostream.h" |
43 | #include <memory> |
44 | #include <queue> |
45 | #include <utility> |
46 | |
47 | using namespace clang; |
48 | using namespace ento; |
49 | |
50 | #define DEBUG_TYPE "AnalysisConsumer" |
51 | |
52 | STATISTIC(NumFunctionTopLevel, "The # of functions at top level."); |
53 | STATISTIC(NumFunctionsAnalyzed, |
54 | "The # of functions and blocks analyzed (as top level " |
55 | "with inlining turned on)."); |
56 | STATISTIC(NumBlocksInAnalyzedFunctions, |
57 | "The # of basic blocks in the analyzed functions."); |
58 | STATISTIC(NumVisitedBlocksInAnalyzedFunctions, |
59 | "The # of visited basic blocks in the analyzed functions."); |
60 | STATISTIC(PercentReachableBlocks, "The % of reachable basic blocks."); |
61 | STATISTIC(MaxCFGSize, "The maximum number of basic blocks in a function."); |
62 | |
63 | |
64 | |
65 | |
66 | |
67 | void ento::createPlistHTMLDiagnosticConsumer(AnalyzerOptions &AnalyzerOpts, |
68 | PathDiagnosticConsumers &C, |
69 | const std::string &prefix, |
70 | const Preprocessor &PP) { |
71 | createHTMLDiagnosticConsumer(AnalyzerOpts, C, |
72 | llvm::sys::path::parent_path(prefix), PP); |
73 | createPlistMultiFileDiagnosticConsumer(AnalyzerOpts, C, prefix, PP); |
74 | } |
75 | |
76 | void ento::createTextPathDiagnosticConsumer(AnalyzerOptions &AnalyzerOpts, |
77 | PathDiagnosticConsumers &C, |
78 | const std::string &Prefix, |
79 | const clang::Preprocessor &PP) { |
80 | llvm_unreachable("'text' consumer should be enabled on ClangDiags"); |
81 | } |
82 | |
83 | namespace { |
84 | class ClangDiagPathDiagConsumer : public PathDiagnosticConsumer { |
85 | DiagnosticsEngine &Diag; |
86 | bool IncludePath; |
87 | public: |
88 | ClangDiagPathDiagConsumer(DiagnosticsEngine &Diag) |
89 | : Diag(Diag), IncludePath(false) {} |
90 | ~ClangDiagPathDiagConsumer() override {} |
91 | StringRef getName() const override { return "ClangDiags"; } |
92 | |
93 | bool supportsLogicalOpControlFlow() const override { return true; } |
94 | bool supportsCrossFileDiagnostics() const override { return true; } |
95 | |
96 | PathGenerationScheme getGenerationScheme() const override { |
97 | return IncludePath ? Minimal : None; |
98 | } |
99 | |
100 | void enablePaths() { |
101 | IncludePath = true; |
102 | } |
103 | |
104 | void FlushDiagnosticsImpl(std::vector<const PathDiagnostic *> &Diags, |
105 | FilesMade *filesMade) override { |
106 | unsigned WarnID = Diag.getCustomDiagID(DiagnosticsEngine::Warning, "%0"); |
107 | unsigned NoteID = Diag.getCustomDiagID(DiagnosticsEngine::Note, "%0"); |
108 | |
109 | for (std::vector<const PathDiagnostic*>::iterator I = Diags.begin(), |
110 | E = Diags.end(); I != E; ++I) { |
111 | const PathDiagnostic *PD = *I; |
112 | SourceLocation WarnLoc = PD->getLocation().asLocation(); |
113 | Diag.Report(WarnLoc, WarnID) << PD->getShortDescription() |
114 | << PD->path.back()->getRanges(); |
115 | |
116 | |
117 | for (const auto &Piece : PD->path) { |
118 | if (!isa<PathDiagnosticNotePiece>(Piece.get())) |
119 | continue; |
120 | |
121 | SourceLocation NoteLoc = Piece->getLocation().asLocation(); |
122 | Diag.Report(NoteLoc, NoteID) << Piece->getString() |
123 | << Piece->getRanges(); |
124 | } |
125 | |
126 | if (!IncludePath) |
127 | continue; |
128 | |
129 | |
130 | PathPieces FlatPath = PD->path.flatten(); |
131 | for (const auto &Piece : FlatPath) { |
132 | if (isa<PathDiagnosticNotePiece>(Piece.get())) |
133 | continue; |
134 | |
135 | SourceLocation NoteLoc = Piece->getLocation().asLocation(); |
136 | Diag.Report(NoteLoc, NoteID) << Piece->getString() |
137 | << Piece->getRanges(); |
138 | } |
139 | } |
140 | } |
141 | }; |
142 | } |
143 | |
144 | |
145 | |
146 | |
147 | |
148 | namespace { |
149 | |
150 | class AnalysisConsumer : public AnalysisASTConsumer, |
151 | public RecursiveASTVisitor<AnalysisConsumer> { |
152 | enum { |
153 | AM_None = 0, |
154 | AM_Syntax = 0x1, |
155 | AM_Path = 0x2 |
156 | }; |
157 | typedef unsigned AnalysisMode; |
158 | |
159 | |
160 | AnalysisMode RecVisitorMode; |
161 | |
162 | BugReporter *RecVisitorBR; |
163 | |
164 | std::vector<std::function<void(CheckerRegistry &)>> CheckerRegistrationFns; |
165 | |
166 | public: |
167 | ASTContext *Ctx; |
168 | const Preprocessor &PP; |
169 | const std::string OutDir; |
170 | AnalyzerOptionsRef Opts; |
171 | ArrayRef<std::string> Plugins; |
172 | CodeInjector *Injector; |
173 | cross_tu::CrossTranslationUnitContext CTU; |
174 | |
175 | |
176 | |
177 | |
178 | |
179 | |
180 | SetOfDecls LocalTUDecls; |
181 | |
182 | |
183 | PathDiagnosticConsumers PathConsumers; |
184 | |
185 | StoreManagerCreator CreateStoreMgr; |
186 | ConstraintManagerCreator CreateConstraintMgr; |
187 | |
188 | std::unique_ptr<CheckerManager> checkerMgr; |
189 | std::unique_ptr<AnalysisManager> Mgr; |
190 | |
191 | |
192 | std::unique_ptr<llvm::TimerGroup> AnalyzerTimers; |
193 | std::unique_ptr<llvm::Timer> TUTotalTimer; |
194 | |
195 | |
196 | |
197 | FunctionSummariesTy FunctionSummaries; |
198 | |
199 | AnalysisConsumer(CompilerInstance &CI, const std::string &outdir, |
200 | AnalyzerOptionsRef opts, ArrayRef<std::string> plugins, |
201 | CodeInjector *injector) |
202 | : RecVisitorMode(0), RecVisitorBR(nullptr), Ctx(nullptr), |
203 | PP(CI.getPreprocessor()), OutDir(outdir), Opts(std::move(opts)), |
204 | Plugins(plugins), Injector(injector), CTU(CI) { |
205 | DigestAnalyzerOptions(); |
206 | if (Opts->PrintStats || Opts->ShouldSerializeStats) { |
207 | AnalyzerTimers = llvm::make_unique<llvm::TimerGroup>( |
208 | "analyzer", "Analyzer timers"); |
209 | TUTotalTimer = llvm::make_unique<llvm::Timer>( |
210 | "time", "Analyzer total time", *AnalyzerTimers); |
211 | llvm::EnableStatistics( false); |
212 | } |
213 | } |
214 | |
215 | ~AnalysisConsumer() override { |
216 | if (Opts->PrintStats) { |
217 | llvm::PrintStatistics(); |
218 | } |
219 | } |
220 | |
221 | void DigestAnalyzerOptions() { |
222 | if (Opts->AnalysisDiagOpt != PD_NONE) { |
223 | |
224 | ClangDiagPathDiagConsumer *clangDiags = |
225 | new ClangDiagPathDiagConsumer(PP.getDiagnostics()); |
226 | PathConsumers.push_back(clangDiags); |
227 | |
228 | if (Opts->AnalysisDiagOpt == PD_TEXT) { |
229 | clangDiags->enablePaths(); |
230 | |
231 | } else if (!OutDir.empty()) { |
232 | switch (Opts->AnalysisDiagOpt) { |
233 | default: |
234 | #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN) \ |
235 | case PD_##NAME: \ |
236 | CREATEFN(*Opts.get(), PathConsumers, OutDir, PP); \ |
237 | break; |
238 | #include "clang/StaticAnalyzer/Core/Analyses.def" |
239 | } |
240 | } |
241 | } |
242 | |
243 | |
244 | switch (Opts->AnalysisStoreOpt) { |
245 | default: |
246 | llvm_unreachable("Unknown store manager."); |
247 | #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATEFN) \ |
248 | case NAME##Model: CreateStoreMgr = CREATEFN; break; |
249 | #include "clang/StaticAnalyzer/Core/Analyses.def" |
250 | } |
251 | |
252 | switch (Opts->AnalysisConstraintsOpt) { |
253 | default: |
254 | llvm_unreachable("Unknown constraint manager."); |
255 | #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATEFN) \ |
256 | case NAME##Model: CreateConstraintMgr = CREATEFN; break; |
257 | #include "clang/StaticAnalyzer/Core/Analyses.def" |
258 | } |
259 | } |
260 | |
261 | void DisplayFunction(const Decl *D, AnalysisMode Mode, |
262 | ExprEngine::InliningModes IMode) { |
263 | if (!Opts->AnalyzerDisplayProgress) |
264 | return; |
265 | |
266 | SourceManager &SM = Mgr->getASTContext().getSourceManager(); |
267 | PresumedLoc Loc = SM.getPresumedLoc(D->getLocation()); |
268 | if (Loc.isValid()) { |
269 | llvm::errs() << "ANALYZE"; |
270 | |
271 | if (Mode == AM_Syntax) |
272 | llvm::errs() << " (Syntax)"; |
273 | else if (Mode == AM_Path) { |
274 | llvm::errs() << " (Path, "; |
275 | switch (IMode) { |
276 | case ExprEngine::Inline_Minimal: |
277 | llvm::errs() << " Inline_Minimal"; |
278 | break; |
279 | case ExprEngine::Inline_Regular: |
280 | llvm::errs() << " Inline_Regular"; |
281 | break; |
282 | } |
283 | llvm::errs() << ")"; |
284 | } |
285 | else |
286 | (0) . __assert_fail ("Mode == (AM_Syntax | AM_Path) && \"Unexpected mode!\"", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp", 286, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(Mode == (AM_Syntax | AM_Path) && "Unexpected mode!"); |
287 | |
288 | llvm::errs() << ": " << Loc.getFilename() << ' ' |
289 | << getFunctionName(D) << '\n'; |
290 | } |
291 | } |
292 | |
293 | void Initialize(ASTContext &Context) override { |
294 | Ctx = &Context; |
295 | checkerMgr = createCheckerManager( |
296 | *Ctx, *Opts, Plugins, CheckerRegistrationFns, PP.getDiagnostics()); |
297 | |
298 | Mgr = llvm::make_unique<AnalysisManager>( |
299 | *Ctx, PP.getDiagnostics(), PathConsumers, CreateStoreMgr, |
300 | CreateConstraintMgr, checkerMgr.get(), *Opts, Injector); |
301 | } |
302 | |
303 | |
304 | |
305 | bool HandleTopLevelDecl(DeclGroupRef D) override; |
306 | void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override; |
307 | |
308 | void HandleTranslationUnit(ASTContext &C) override; |
309 | |
310 | |
311 | |
312 | |
313 | ExprEngine::InliningModes |
314 | getInliningModeForFunction(const Decl *D, const SetOfConstDecls &Visited); |
315 | |
316 | |
317 | |
318 | void HandleDeclsCallGraph(const unsigned LocalTUDeclsSize); |
319 | |
320 | |
321 | |
322 | |
323 | |
324 | |
325 | |
326 | void HandleCode(Decl *D, AnalysisMode Mode, |
327 | ExprEngine::InliningModes IMode = ExprEngine::Inline_Minimal, |
328 | SetOfConstDecls *VisitedCallees = nullptr); |
329 | |
330 | void RunPathSensitiveChecks(Decl *D, |
331 | ExprEngine::InliningModes IMode, |
332 | SetOfConstDecls *VisitedCallees); |
333 | |
334 | |
335 | bool shouldWalkTypesOfTypeLocs() const { return false; } |
336 | |
337 | |
338 | bool VisitDecl(Decl *D) { |
339 | AnalysisMode Mode = getModeForDecl(D, RecVisitorMode); |
340 | if (Mode & AM_Syntax) |
341 | checkerMgr->runCheckersOnASTDecl(D, *Mgr, *RecVisitorBR); |
342 | return true; |
343 | } |
344 | |
345 | bool VisitFunctionDecl(FunctionDecl *FD) { |
346 | IdentifierInfo *II = FD->getIdentifier(); |
347 | if (II && II->getName().startswith("__inline")) |
348 | return true; |
349 | |
350 | |
351 | |
352 | if (FD->isThisDeclarationADefinition() && |
353 | !FD->isDependentContext()) { |
354 | shouldInlineCall() == false", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp", 354, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(RecVisitorMode == AM_Syntax || Mgr->shouldInlineCall() == false); |
355 | HandleCode(FD, RecVisitorMode); |
356 | } |
357 | return true; |
358 | } |
359 | |
360 | bool VisitObjCMethodDecl(ObjCMethodDecl *MD) { |
361 | if (MD->isThisDeclarationADefinition()) { |
362 | shouldInlineCall() == false", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp", 362, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(RecVisitorMode == AM_Syntax || Mgr->shouldInlineCall() == false); |
363 | HandleCode(MD, RecVisitorMode); |
364 | } |
365 | return true; |
366 | } |
367 | |
368 | bool VisitBlockDecl(BlockDecl *BD) { |
369 | if (BD->hasBody()) { |
370 | shouldInlineCall() == false", "/home/seafit/code_projects/clang_source/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp", 370, __PRETTY_FUNCTION__))" file_link="../../../../include/assert.h.html#88" macro="true">assert(RecVisitorMode == AM_Syntax || Mgr->shouldInlineCall() == false); |
371 | |
372 | |
373 | if (!BD->isDependentContext()) { |
374 | HandleCode(BD, RecVisitorMode); |
375 | } |
376 | } |
377 | return true; |
378 | } |
379 | |
380 | void AddDiagnosticConsumer(PathDiagnosticConsumer *Consumer) override { |
381 | PathConsumers.push_back(Consumer); |
382 | } |
383 | |
384 | void AddCheckerRegistrationFn(std::function<void(CheckerRegistry&)> Fn) override { |
385 | CheckerRegistrationFns.push_back(std::move(Fn)); |
386 | } |
387 | |
388 | private: |
389 | void storeTopLevelDecls(DeclGroupRef DG); |
390 | std::string getFunctionName(const Decl *D); |
391 | |
392 | |
393 | AnalysisMode getModeForDecl(Decl *D, AnalysisMode Mode); |
394 | void runAnalysisOnTranslationUnit(ASTContext &C); |
395 | |
396 | |
397 | void reportAnalyzerProgress(StringRef S); |
398 | }; |
399 | } |
400 | |
401 | |
402 | |
403 | |
404 | |
405 | bool AnalysisConsumer::HandleTopLevelDecl(DeclGroupRef DG) { |
406 | storeTopLevelDecls(DG); |
407 | return true; |
408 | } |
409 | |
410 | void AnalysisConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) { |
411 | storeTopLevelDecls(DG); |
412 | } |
413 | |
414 | void AnalysisConsumer::storeTopLevelDecls(DeclGroupRef DG) { |
415 | for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I) { |
416 | |
417 | |
418 | |
419 | if (isa<ObjCMethodDecl>(*I)) |
420 | continue; |
421 | |
422 | LocalTUDecls.push_back(*I); |
423 | } |
424 | } |
425 | |
426 | static bool shouldSkipFunction(const Decl *D, |
427 | const SetOfConstDecls &Visited, |
428 | const SetOfConstDecls &VisitedAsTopLevel) { |
429 | if (VisitedAsTopLevel.count(D)) |
430 | return true; |
431 | |
432 | |
433 | |
434 | |
435 | |
436 | |
437 | |
438 | |
439 | if (isa<ObjCMethodDecl>(D)) |
440 | return false; |
441 | |
442 | |
443 | |
444 | if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) { |
445 | if (MD->isCopyAssignmentOperator() || MD->isMoveAssignmentOperator()) |
446 | return false; |
447 | } |
448 | |
449 | |
450 | return Visited.count(D); |
451 | } |
452 | |
453 | ExprEngine::InliningModes |
454 | AnalysisConsumer::getInliningModeForFunction(const Decl *D, |
455 | const SetOfConstDecls &Visited) { |
456 | |
457 | |
458 | |
459 | if (Visited.count(D) && isa<ObjCMethodDecl>(D)) { |
460 | const ObjCMethodDecl *ObjCM = cast<ObjCMethodDecl>(D); |
461 | if (ObjCM->getMethodFamily() != OMF_init) |
462 | return ExprEngine::Inline_Minimal; |
463 | } |
464 | |
465 | return ExprEngine::Inline_Regular; |
466 | } |
467 | |
468 | void AnalysisConsumer::HandleDeclsCallGraph(const unsigned LocalTUDeclsSize) { |
469 | |
470 | |
471 | |
472 | |
473 | CallGraph CG; |
474 | for (unsigned i = 0 ; i < LocalTUDeclsSize ; ++i) { |
475 | CG.addToCallGraph(LocalTUDecls[i]); |
476 | } |
477 | |
478 | |
479 | |
480 | |
481 | |
482 | |
483 | |
484 | SetOfConstDecls Visited; |
485 | SetOfConstDecls VisitedAsTopLevel; |
486 | llvm::ReversePostOrderTraversal<clang::CallGraph*> RPOT(&CG); |
487 | for (llvm::ReversePostOrderTraversal<clang::CallGraph*>::rpo_iterator |
488 | I = RPOT.begin(), E = RPOT.end(); I != E; ++I) { |
489 | NumFunctionTopLevel++; |
490 | |
491 | CallGraphNode *N = *I; |
492 | Decl *D = N->getDecl(); |
493 | |
494 | |
495 | if (!D) |
496 | continue; |
497 | |
498 | |
499 | |
500 | if (shouldSkipFunction(D, Visited, VisitedAsTopLevel)) |
501 | continue; |
502 | |
503 | |
504 | SetOfConstDecls VisitedCallees; |
505 | |
506 | HandleCode(D, AM_Path, getInliningModeForFunction(D, Visited), |
507 | (Mgr->options.InliningMode == All ? nullptr : &VisitedCallees)); |
508 | |
509 | |
510 | for (const Decl *Callee : VisitedCallees) |
511 | |
512 | |
513 | Visited.insert(isa<ObjCMethodDecl>(Callee) ? Callee |
514 | : Callee->getCanonicalDecl()); |
515 | VisitedAsTopLevel.insert(D); |
516 | } |
517 | } |
518 | |
519 | static bool isBisonFile(ASTContext &C) { |
520 | const SourceManager &SM = C.getSourceManager(); |
521 | FileID FID = SM.getMainFileID(); |
522 | StringRef Buffer = SM.getBuffer(FID)->getBuffer(); |
523 | if (Buffer.startswith("/* A Bison parser, made by")) |
524 | return true; |
525 | return false; |
526 | } |
527 | |
528 | void AnalysisConsumer::runAnalysisOnTranslationUnit(ASTContext &C) { |
529 | BugReporter BR(*Mgr); |
530 | TranslationUnitDecl *TU = C.getTranslationUnitDecl(); |
531 | checkerMgr->runCheckersOnASTDecl(TU, *Mgr, BR); |
532 | |
533 | |
534 | |
535 | |
536 | RecVisitorMode = AM_Syntax; |
537 | if (!Mgr->shouldInlineCall()) |
538 | RecVisitorMode |= AM_Path; |
539 | RecVisitorBR = &BR; |
540 | |
541 | |
542 | |
543 | |
544 | |
545 | |
546 | |
547 | const unsigned LocalTUDeclsSize = LocalTUDecls.size(); |
548 | for (unsigned i = 0 ; i < LocalTUDeclsSize ; ++i) { |
549 | TraverseDecl(LocalTUDecls[i]); |
550 | } |
551 | |
552 | if (Mgr->shouldInlineCall()) |
553 | HandleDeclsCallGraph(LocalTUDeclsSize); |
554 | |
555 | |
556 | checkerMgr->runCheckersOnEndOfTranslationUnit(TU, *Mgr, BR); |
557 | |
558 | RecVisitorBR = nullptr; |
559 | } |
560 | |
561 | void AnalysisConsumer::reportAnalyzerProgress(StringRef S) { |
562 | if (Opts->AnalyzerDisplayProgress) |
563 | llvm::errs() << S; |
564 | } |
565 | |
566 | void AnalysisConsumer::HandleTranslationUnit(ASTContext &C) { |
567 | |
568 | |
569 | DiagnosticsEngine &Diags = PP.getDiagnostics(); |
570 | if (Diags.hasErrorOccurred() || Diags.hasFatalErrorOccurred()) |
571 | return; |
572 | |
573 | if (TUTotalTimer) TUTotalTimer->startTimer(); |
574 | |
575 | if (isBisonFile(C)) { |
576 | reportAnalyzerProgress("Skipping bison-generated file\n"); |
577 | } else if (Opts->DisableAllChecks) { |
578 | |
579 | |
580 | |
581 | reportAnalyzerProgress("All checks are disabled using a supplied option\n"); |
582 | } else { |
583 | |
584 | runAnalysisOnTranslationUnit(C); |
585 | } |
586 | |
587 | if (TUTotalTimer) TUTotalTimer->stopTimer(); |
588 | |
589 | |
590 | NumBlocksInAnalyzedFunctions = FunctionSummaries.getTotalNumBasicBlocks(); |
591 | NumVisitedBlocksInAnalyzedFunctions = |
592 | FunctionSummaries.getTotalNumVisitedBasicBlocks(); |
593 | if (NumBlocksInAnalyzedFunctions > 0) |
594 | PercentReachableBlocks = |
595 | (FunctionSummaries.getTotalNumVisitedBasicBlocks() * 100) / |
596 | NumBlocksInAnalyzedFunctions; |
597 | |
598 | |
599 | |
600 | |
601 | |
602 | Mgr.reset(); |
603 | } |
604 | |
605 | std::string AnalysisConsumer::getFunctionName(const Decl *D) { |
606 | std::string Str; |
607 | llvm::raw_string_ostream OS(Str); |
608 | |
609 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { |
610 | OS << FD->getQualifiedNameAsString(); |
611 | |
612 | |
613 | if (Ctx->getLangOpts().CPlusPlus) { |
614 | OS << '('; |
615 | for (const auto &P : FD->parameters()) { |
616 | if (P != *FD->param_begin()) |
617 | OS << ", "; |
618 | OS << P->getType().getAsString(); |
619 | } |
620 | OS << ')'; |
621 | } |
622 | |
623 | } else if (isa<BlockDecl>(D)) { |
624 | PresumedLoc Loc = Ctx->getSourceManager().getPresumedLoc(D->getLocation()); |
625 | |
626 | if (Loc.isValid()) { |
627 | OS << "block (line: " << Loc.getLine() << ", col: " << Loc.getColumn() |
628 | << ')'; |
629 | } |
630 | |
631 | } else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) { |
632 | |
633 | |
634 | OS << (OMD->isInstanceMethod() ? '-' : '+') << '['; |
635 | const DeclContext *DC = OMD->getDeclContext(); |
636 | if (const auto *OID = dyn_cast<ObjCImplementationDecl>(DC)) { |
637 | OS << OID->getName(); |
638 | } else if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(DC)) { |
639 | OS << OID->getName(); |
640 | } else if (const auto *OC = dyn_cast<ObjCCategoryDecl>(DC)) { |
641 | if (OC->IsClassExtension()) { |
642 | OS << OC->getClassInterface()->getName(); |
643 | } else { |
644 | OS << OC->getIdentifier()->getNameStart() << '(' |
645 | << OC->getIdentifier()->getNameStart() << ')'; |
646 | } |
647 | } else if (const auto *OCD = dyn_cast<ObjCCategoryImplDecl>(DC)) { |
648 | OS << OCD->getClassInterface()->getName() << '(' |
649 | << OCD->getName() << ')'; |
650 | } else if (isa<ObjCProtocolDecl>(DC)) { |
651 | |
652 | if (ImplicitParamDecl *SelfDecl = OMD->getSelfDecl()) { |
653 | QualType ClassTy = |
654 | cast<ObjCObjectPointerType>(SelfDecl->getType())->getPointeeType(); |
655 | ClassTy.print(OS, PrintingPolicy(LangOptions())); |
656 | } |
657 | } |
658 | OS << ' ' << OMD->getSelector().getAsString() << ']'; |
659 | |
660 | } |
661 | |
662 | return OS.str(); |
663 | } |
664 | |
665 | AnalysisConsumer::AnalysisMode |
666 | AnalysisConsumer::getModeForDecl(Decl *D, AnalysisMode Mode) { |
667 | if (!Opts->AnalyzeSpecificFunction.empty() && |
668 | getFunctionName(D) != Opts->AnalyzeSpecificFunction) |
669 | return AM_None; |
670 | |
671 | |
672 | |
673 | |
674 | |
675 | |
676 | SourceManager &SM = Ctx->getSourceManager(); |
677 | const Stmt *Body = D->getBody(); |
678 | SourceLocation SL = Body ? Body->getBeginLoc() : D->getLocation(); |
679 | SL = SM.getExpansionLoc(SL); |
680 | |
681 | if (!Opts->AnalyzeAll && !Mgr->isInCodeFile(SL)) { |
682 | if (SL.isInvalid() || SM.isInSystemHeader(SL)) |
683 | return AM_None; |
684 | return Mode & ~AM_Path; |
685 | } |
686 | |
687 | return Mode; |
688 | } |
689 | |
690 | void AnalysisConsumer::HandleCode(Decl *D, AnalysisMode Mode, |
691 | ExprEngine::InliningModes IMode, |
692 | SetOfConstDecls *VisitedCallees) { |
693 | if (!D->hasBody()) |
694 | return; |
695 | Mode = getModeForDecl(D, Mode); |
696 | if (Mode == AM_None) |
697 | return; |
698 | |
699 | |
700 | Mgr->ClearContexts(); |
701 | |
702 | if (Mgr->getAnalysisDeclContext(D)->isBodyAutosynthesized()) |
703 | return; |
704 | |
705 | DisplayFunction(D, Mode, IMode); |
706 | CFG *DeclCFG = Mgr->getCFG(D); |
707 | if (DeclCFG) |
708 | MaxCFGSize.updateMax(DeclCFG->size()); |
709 | |
710 | BugReporter BR(*Mgr); |
711 | |
712 | if (Mode & AM_Syntax) |
713 | checkerMgr->runCheckersOnASTBody(D, *Mgr, BR); |
714 | if ((Mode & AM_Path) && checkerMgr->hasPathSensitiveCheckers()) { |
715 | RunPathSensitiveChecks(D, IMode, VisitedCallees); |
716 | if (IMode != ExprEngine::Inline_Minimal) |
717 | NumFunctionsAnalyzed++; |
718 | } |
719 | } |
720 | |
721 | |
722 | |
723 | |
724 | |
725 | void AnalysisConsumer::RunPathSensitiveChecks(Decl *D, |
726 | ExprEngine::InliningModes IMode, |
727 | SetOfConstDecls *VisitedCallees) { |
728 | |
729 | |
730 | if (!Mgr->getCFG(D)) |
731 | return; |
732 | |
733 | |
734 | if (!Mgr->getAnalysisDeclContext(D)->getAnalysis<RelaxedLiveVariables>()) |
735 | return; |
736 | |
737 | ExprEngine Eng(CTU, *Mgr, VisitedCallees, &FunctionSummaries, IMode); |
738 | |
739 | |
740 | Eng.ExecuteWorkList(Mgr->getAnalysisDeclContextManager().getStackFrame(D), |
741 | Mgr->options.MaxNodesPerTopLevelFunction); |
742 | |
743 | if (!Mgr->options.DumpExplodedGraphTo.empty()) |
744 | Eng.DumpGraph(Mgr->options.TrimGraph, Mgr->options.DumpExplodedGraphTo); |
745 | |
746 | |
747 | if (Mgr->options.visualizeExplodedGraphWithGraphViz) |
748 | Eng.ViewGraph(Mgr->options.TrimGraph); |
749 | |
750 | |
751 | Eng.getBugReporter().FlushReports(); |
752 | } |
753 | |
754 | |
755 | |
756 | |
757 | |
758 | std::unique_ptr<AnalysisASTConsumer> |
759 | ento::CreateAnalysisConsumer(CompilerInstance &CI) { |
760 | |
761 | CI.getPreprocessor().getDiagnostics().setWarningsAsErrors(false); |
762 | |
763 | AnalyzerOptionsRef analyzerOpts = CI.getAnalyzerOpts(); |
764 | bool hasModelPath = analyzerOpts->Config.count("model-path") > 0; |
765 | |
766 | return llvm::make_unique<AnalysisConsumer>( |
767 | CI, CI.getFrontendOpts().OutputFile, analyzerOpts, |
768 | CI.getFrontendOpts().Plugins, |
769 | hasModelPath ? new ModelInjector(CI) : nullptr); |
770 | } |
771 | |