From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- .../StaticAnalyzer/Frontend/AnalysisConsumer.cpp | 680 +++++++++++++++++++++ .../lib/StaticAnalyzer/Frontend/AnalysisConsumer.h | 43 ++ clang/lib/StaticAnalyzer/Frontend/CMakeLists.txt | 21 + .../Frontend/CheckerRegistration.cpp | 133 ++++ .../StaticAnalyzer/Frontend/FrontendActions.cpp | 23 + clang/lib/StaticAnalyzer/Frontend/Makefile | 19 + 6 files changed, 919 insertions(+) create mode 100644 clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp create mode 100644 clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.h create mode 100644 clang/lib/StaticAnalyzer/Frontend/CMakeLists.txt create mode 100644 clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp create mode 100644 clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp create mode 100644 clang/lib/StaticAnalyzer/Frontend/Makefile (limited to 'clang/lib/StaticAnalyzer/Frontend') diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp new file mode 100644 index 0000000..008f744 --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp @@ -0,0 +1,680 @@ +//===--- AnalysisConsumer.cpp - ASTConsumer for running Analyses ----------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// "Meta" ASTConsumer for running different source analyses. +// +//===----------------------------------------------------------------------===// + +#define DEBUG_TYPE "AnalysisConsumer" + +#include "AnalysisConsumer.h" +#include "clang/AST/ASTConsumer.h" +#include "clang/AST/Decl.h" +#include "clang/AST/DeclCXX.h" +#include "clang/AST/DeclObjC.h" +#include "clang/AST/ParentMap.h" +#include "clang/AST/RecursiveASTVisitor.h" +#include "clang/Analysis/CFG.h" +#include "clang/Analysis/CallGraph.h" +#include "clang/StaticAnalyzer/Frontend/CheckerRegistration.h" +#include "clang/StaticAnalyzer/Core/CheckerManager.h" +#include "clang/StaticAnalyzer/Checkers/LocalCheckers.h" +#include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h" +#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" +#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h" +#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" +#include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h" + +#include "clang/Basic/FileManager.h" +#include "clang/Basic/SourceManager.h" +#include "clang/Frontend/AnalyzerOptions.h" +#include "clang/Lex/Preprocessor.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/Program.h" +#include "llvm/Support/Timer.h" +#include "llvm/ADT/DepthFirstIterator.h" +#include "llvm/ADT/OwningPtr.h" +#include "llvm/ADT/SmallPtrSet.h" +#include "llvm/ADT/Statistic.h" + +#include + +using namespace clang; +using namespace ento; +using llvm::SmallPtrSet; + +static ExplodedNode::Auditor* CreateUbiViz(); + +STATISTIC(NumFunctionTopLevel, "The # of functions at top level."); +STATISTIC(NumFunctionsAnalyzed, "The # of functions analysed (as top level)."); +STATISTIC(NumBlocksInAnalyzedFunctions, + "The # of basic blocks in the analyzed functions."); +STATISTIC(PercentReachableBlocks, "The % of reachable basic blocks."); + +//===----------------------------------------------------------------------===// +// Special PathDiagnosticConsumers. +//===----------------------------------------------------------------------===// + +static PathDiagnosticConsumer* +createPlistHTMLDiagnosticConsumer(const std::string& prefix, + const Preprocessor &PP) { + PathDiagnosticConsumer *PD = + createHTMLDiagnosticConsumer(llvm::sys::path::parent_path(prefix), PP); + return createPlistDiagnosticConsumer(prefix, PP, PD); +} + +//===----------------------------------------------------------------------===// +// AnalysisConsumer declaration. +//===----------------------------------------------------------------------===// + +namespace { + +class AnalysisConsumer : public ASTConsumer, + public RecursiveASTVisitor { + enum AnalysisMode { + ANALYSIS_SYNTAX, + ANALYSIS_PATH, + ANALYSIS_ALL + }; + + /// Mode of the analyzes while recursively visiting Decls. + AnalysisMode RecVisitorMode; + /// Bug Reporter to use while recursively visiting Decls. + BugReporter *RecVisitorBR; + +public: + ASTContext *Ctx; + const Preprocessor &PP; + const std::string OutDir; + AnalyzerOptions Opts; + ArrayRef Plugins; + + /// \brief Stores the declarations from the local translation unit. + /// Note, we pre-compute the local declarations at parse time as an + /// optimization to make sure we do not deserialize everything from disk. + /// The local declaration to all declarations ratio might be very small when + /// working with a PCH file. + SetOfDecls LocalTUDecls; + + // PD is owned by AnalysisManager. + PathDiagnosticConsumer *PD; + + StoreManagerCreator CreateStoreMgr; + ConstraintManagerCreator CreateConstraintMgr; + + OwningPtr checkerMgr; + OwningPtr Mgr; + + /// Time the analyzes time of each translation unit. + static llvm::Timer* TUTotalTimer; + + /// The information about analyzed functions shared throughout the + /// translation unit. + FunctionSummariesTy FunctionSummaries; + + AnalysisConsumer(const Preprocessor& pp, + const std::string& outdir, + const AnalyzerOptions& opts, + ArrayRef plugins) + : RecVisitorMode(ANALYSIS_ALL), RecVisitorBR(0), + Ctx(0), PP(pp), OutDir(outdir), Opts(opts), Plugins(plugins), PD(0) { + DigestAnalyzerOptions(); + if (Opts.PrintStats) { + llvm::EnableStatistics(); + TUTotalTimer = new llvm::Timer("Analyzer Total Time"); + } + } + + ~AnalysisConsumer() { + if (Opts.PrintStats) + delete TUTotalTimer; + } + + void DigestAnalyzerOptions() { + // Create the PathDiagnosticConsumer. + if (!OutDir.empty()) { + switch (Opts.AnalysisDiagOpt) { + default: +#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN, AUTOCREATE) \ + case PD_##NAME: PD = CREATEFN(OutDir, PP); break; +#include "clang/Frontend/Analyses.def" + } + } else if (Opts.AnalysisDiagOpt == PD_TEXT) { + // Create the text client even without a specified output file since + // it just uses diagnostic notes. + PD = createTextPathDiagnosticConsumer("", PP); + } + + // Create the analyzer component creators. + switch (Opts.AnalysisStoreOpt) { + default: + llvm_unreachable("Unknown store manager."); +#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATEFN) \ + case NAME##Model: CreateStoreMgr = CREATEFN; break; +#include "clang/Frontend/Analyses.def" + } + + switch (Opts.AnalysisConstraintsOpt) { + default: + llvm_unreachable("Unknown store manager."); +#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATEFN) \ + case NAME##Model: CreateConstraintMgr = CREATEFN; break; +#include "clang/Frontend/Analyses.def" + } + } + + void DisplayFunction(const Decl *D, AnalysisMode Mode) { + if (!Opts.AnalyzerDisplayProgress) + return; + + SourceManager &SM = Mgr->getASTContext().getSourceManager(); + PresumedLoc Loc = SM.getPresumedLoc(D->getLocation()); + if (Loc.isValid()) { + llvm::errs() << "ANALYZE"; + switch (Mode) { + case ANALYSIS_SYNTAX: llvm::errs() << "(Syntax)"; break; + case ANALYSIS_PATH: llvm::errs() << "(Path Sensitive)"; break; + case ANALYSIS_ALL: break; + }; + llvm::errs() << ": " << Loc.getFilename(); + if (isa(D) || isa(D)) { + const NamedDecl *ND = cast(D); + llvm::errs() << ' ' << *ND << '\n'; + } + else if (isa(D)) { + llvm::errs() << ' ' << "block(line:" << Loc.getLine() << ",col:" + << Loc.getColumn() << '\n'; + } + else if (const ObjCMethodDecl *MD = dyn_cast(D)) { + Selector S = MD->getSelector(); + llvm::errs() << ' ' << S.getAsString(); + } + } + } + + virtual void Initialize(ASTContext &Context) { + Ctx = &Context; + checkerMgr.reset(createCheckerManager(Opts, PP.getLangOpts(), Plugins, + PP.getDiagnostics())); + Mgr.reset(new AnalysisManager(*Ctx, PP.getDiagnostics(), + PP.getLangOpts(), PD, + CreateStoreMgr, CreateConstraintMgr, + checkerMgr.get(), + Opts.MaxNodes, Opts.MaxLoop, + Opts.VisualizeEGDot, Opts.VisualizeEGUbi, + Opts.AnalysisPurgeOpt, Opts.EagerlyAssume, + Opts.TrimGraph, + Opts.UnoptimizedCFG, Opts.CFGAddImplicitDtors, + Opts.CFGAddInitializers, + Opts.EagerlyTrimEGraph, + Opts.IPAMode, + Opts.InlineMaxStackDepth, + Opts.InlineMaxFunctionSize, + Opts.InliningMode, + Opts.NoRetryExhausted)); + } + + /// \brief Store the top level decls in the set to be processed later on. + /// (Doing this pre-processing avoids deserialization of data from PCH.) + virtual bool HandleTopLevelDecl(DeclGroupRef D); + virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D); + + virtual void HandleTranslationUnit(ASTContext &C); + + /// \brief Build the call graph for all the top level decls of this TU and + /// use it to define the order in which the functions should be visited. + void HandleDeclsGallGraph(); + + /// \brief Run analyzes(syntax or path sensitive) on the given function. + /// \param Mode - determines if we are requesting syntax only or path + /// sensitive only analysis. + /// \param VisitedCallees - The output parameter, which is populated with the + /// set of functions which should be considered analyzed after analyzing the + /// given root function. + void HandleCode(Decl *D, AnalysisMode Mode, + SetOfConstDecls *VisitedCallees = 0); + + void RunPathSensitiveChecks(Decl *D, SetOfConstDecls *VisitedCallees); + void ActionExprEngine(Decl *D, bool ObjCGCEnabled, + SetOfConstDecls *VisitedCallees); + + /// Visitors for the RecursiveASTVisitor. + + /// Handle callbacks for arbitrary Decls. + bool VisitDecl(Decl *D) { + checkerMgr->runCheckersOnASTDecl(D, *Mgr, *RecVisitorBR); + return true; + } + + bool VisitFunctionDecl(FunctionDecl *FD) { + IdentifierInfo *II = FD->getIdentifier(); + if (II && II->getName().startswith("__inline")) + return true; + + // We skip function template definitions, as their semantics is + // only determined when they are instantiated. + if (FD->isThisDeclarationADefinition() && + !FD->isDependentContext()) { + HandleCode(FD, RecVisitorMode); + } + return true; + } + + bool VisitObjCMethodDecl(ObjCMethodDecl *MD) { + checkerMgr->runCheckersOnASTDecl(MD, *Mgr, *RecVisitorBR); + if (MD->isThisDeclarationADefinition()) + HandleCode(MD, RecVisitorMode); + return true; + } + +private: + void storeTopLevelDecls(DeclGroupRef DG); + + /// \brief Check if we should skip (not analyze) the given function. + bool skipFunction(Decl *D); + +}; +} // end anonymous namespace + + +//===----------------------------------------------------------------------===// +// AnalysisConsumer implementation. +//===----------------------------------------------------------------------===// +llvm::Timer* AnalysisConsumer::TUTotalTimer = 0; + +bool AnalysisConsumer::HandleTopLevelDecl(DeclGroupRef DG) { + storeTopLevelDecls(DG); + return true; +} + +void AnalysisConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) { + storeTopLevelDecls(DG); +} + +void AnalysisConsumer::storeTopLevelDecls(DeclGroupRef DG) { + for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I) { + + // Skip ObjCMethodDecl, wait for the objc container to avoid + // analyzing twice. + if (isa(*I)) + continue; + + LocalTUDecls.insert(*I); + } +} + +void AnalysisConsumer::HandleDeclsGallGraph() { + // Otherwise, use the Callgraph to derive the order. + // Build the Call Graph. + CallGraph CG; + // Add all the top level declarations to the graph. + for (SetOfDecls::iterator I = LocalTUDecls.begin(), + E = LocalTUDecls.end(); I != E; ++I) + CG.addToCallGraph(*I); + + // Find the top level nodes - children of root + the unreachable (parentless) + // nodes. + llvm::SmallVector TopLevelFunctions; + for (CallGraph::nodes_iterator TI = CG.parentless_begin(), + TE = CG.parentless_end(); TI != TE; ++TI) { + TopLevelFunctions.push_back(*TI); + NumFunctionTopLevel++; + } + CallGraphNode *Entry = CG.getRoot(); + for (CallGraphNode::iterator I = Entry->begin(), + E = Entry->end(); I != E; ++I) { + TopLevelFunctions.push_back(*I); + NumFunctionTopLevel++; + } + + // Make sure the nodes are sorted in order reverse of their definition in the + // translation unit. This step is very important for performance. It ensures + // that we analyze the root functions before the externally available + // subroutines. + std::queue BFSQueue; + for (llvm::SmallVector::reverse_iterator + TI = TopLevelFunctions.rbegin(), TE = TopLevelFunctions.rend(); + TI != TE; ++TI) + BFSQueue.push(*TI); + + // BFS over all of the functions, while skipping the ones inlined into + // the previously processed functions. Use external Visited set, which is + // also modified when we inline a function. + SmallPtrSet Visited; + while(!BFSQueue.empty()) { + CallGraphNode *N = BFSQueue.front(); + BFSQueue.pop(); + + // Skip the functions which have been processed already or previously + // inlined. + if (Visited.count(N)) + continue; + + // Analyze the function. + SetOfConstDecls VisitedCallees; + Decl *D = N->getDecl(); + assert(D); + HandleCode(D, ANALYSIS_PATH, + (Mgr->InliningMode == All ? 0 : &VisitedCallees)); + + // Add the visited callees to the global visited set. + for (SetOfConstDecls::const_iterator I = VisitedCallees.begin(), + E = VisitedCallees.end(); I != E; ++I){ + CallGraphNode *VN = CG.getNode(*I); + if (VN) + Visited.insert(VN); + } + Visited.insert(N); + + // Push the children into the queue. + for (CallGraphNode::const_iterator CI = N->begin(), + CE = N->end(); CI != CE; ++CI) { + BFSQueue.push(*CI); + } + } +} + +void AnalysisConsumer::HandleTranslationUnit(ASTContext &C) { + // Don't run the actions if an error has occurred with parsing the file. + DiagnosticsEngine &Diags = PP.getDiagnostics(); + if (Diags.hasErrorOccurred() || Diags.hasFatalErrorOccurred()) + return; + + { + if (TUTotalTimer) TUTotalTimer->startTimer(); + + // Introduce a scope to destroy BR before Mgr. + BugReporter BR(*Mgr); + TranslationUnitDecl *TU = C.getTranslationUnitDecl(); + checkerMgr->runCheckersOnASTDecl(TU, *Mgr, BR); + + // Run the AST-only checks using the order in which functions are defined. + // If inlining is not turned on, use the simplest function order for path + // sensitive analyzes as well. + RecVisitorMode = (Mgr->shouldInlineCall() ? ANALYSIS_SYNTAX : ANALYSIS_ALL); + RecVisitorBR = &BR; + + // Process all the top level declarations. + for (SetOfDecls::iterator I = LocalTUDecls.begin(), + E = LocalTUDecls.end(); I != E; ++I) + TraverseDecl(*I); + + if (Mgr->shouldInlineCall()) + HandleDeclsGallGraph(); + + // After all decls handled, run checkers on the entire TranslationUnit. + checkerMgr->runCheckersOnEndOfTranslationUnit(TU, *Mgr, BR); + + RecVisitorBR = 0; + } + + // Explicitly destroy the PathDiagnosticConsumer. This will flush its output. + // FIXME: This should be replaced with something that doesn't rely on + // side-effects in PathDiagnosticConsumer's destructor. This is required when + // used with option -disable-free. + Mgr.reset(NULL); + + if (TUTotalTimer) TUTotalTimer->stopTimer(); + + // Count how many basic blocks we have not covered. + NumBlocksInAnalyzedFunctions = FunctionSummaries.getTotalNumBasicBlocks(); + if (NumBlocksInAnalyzedFunctions > 0) + PercentReachableBlocks = + (FunctionSummaries.getTotalNumVisitedBasicBlocks() * 100) / + NumBlocksInAnalyzedFunctions; + +} + +static void FindBlocks(DeclContext *D, SmallVectorImpl &WL) { + if (BlockDecl *BD = dyn_cast(D)) + WL.push_back(BD); + + for (DeclContext::decl_iterator I = D->decls_begin(), E = D->decls_end(); + I!=E; ++I) + if (DeclContext *DC = dyn_cast(*I)) + FindBlocks(DC, WL); +} + +static std::string getFunctionName(const Decl *D) { + if (const ObjCMethodDecl *ID = dyn_cast(D)) { + return ID->getSelector().getAsString(); + } + if (const FunctionDecl *ND = dyn_cast(D)) { + IdentifierInfo *II = ND->getIdentifier(); + if (II) + return II->getName(); + } + return ""; +} + +bool AnalysisConsumer::skipFunction(Decl *D) { + if (!Opts.AnalyzeSpecificFunction.empty() && + getFunctionName(D) != Opts.AnalyzeSpecificFunction) + return true; + + // Don't run the actions on declarations in header files unless + // otherwise specified. + SourceManager &SM = Ctx->getSourceManager(); + SourceLocation SL = SM.getExpansionLoc(D->getLocation()); + if (!Opts.AnalyzeAll && !SM.isFromMainFile(SL)) + return true; + + return false; +} + +void AnalysisConsumer::HandleCode(Decl *D, AnalysisMode Mode, + SetOfConstDecls *VisitedCallees) { + if (skipFunction(D)) + return; + + DisplayFunction(D, Mode); + + // Clear the AnalysisManager of old AnalysisDeclContexts. + Mgr->ClearContexts(); + + // Dispatch on the actions. + SmallVector WL; + WL.push_back(D); + + if (D->hasBody() && Opts.AnalyzeNestedBlocks) + FindBlocks(cast(D), WL); + + BugReporter BR(*Mgr); + for (SmallVectorImpl::iterator WI=WL.begin(), WE=WL.end(); + WI != WE; ++WI) + if ((*WI)->hasBody()) { + if (Mode != ANALYSIS_PATH) + checkerMgr->runCheckersOnASTBody(*WI, *Mgr, BR); + if (Mode != ANALYSIS_SYNTAX && checkerMgr->hasPathSensitiveCheckers()) { + RunPathSensitiveChecks(*WI, VisitedCallees); + NumFunctionsAnalyzed++; + } + } +} + +//===----------------------------------------------------------------------===// +// Path-sensitive checking. +//===----------------------------------------------------------------------===// + +void AnalysisConsumer::ActionExprEngine(Decl *D, bool ObjCGCEnabled, + SetOfConstDecls *VisitedCallees) { + // Construct the analysis engine. First check if the CFG is valid. + // FIXME: Inter-procedural analysis will need to handle invalid CFGs. + if (!Mgr->getCFG(D)) + return; + + ExprEngine Eng(*Mgr, ObjCGCEnabled, VisitedCallees, &FunctionSummaries); + + // Set the graph auditor. + OwningPtr Auditor; + if (Mgr->shouldVisualizeUbigraph()) { + Auditor.reset(CreateUbiViz()); + ExplodedNode::SetAuditor(Auditor.get()); + } + + // Execute the worklist algorithm. + Eng.ExecuteWorkList(Mgr->getAnalysisDeclContextManager().getStackFrame(D, 0), + Mgr->getMaxNodes()); + + // Release the auditor (if any) so that it doesn't monitor the graph + // created BugReporter. + ExplodedNode::SetAuditor(0); + + // Visualize the exploded graph. + if (Mgr->shouldVisualizeGraphviz()) + Eng.ViewGraph(Mgr->shouldTrimGraph()); + + // Display warnings. + Eng.getBugReporter().FlushReports(); +} + +void AnalysisConsumer::RunPathSensitiveChecks(Decl *D, + SetOfConstDecls *Visited) { + + switch (Mgr->getLangOpts().getGC()) { + case LangOptions::NonGC: + ActionExprEngine(D, false, Visited); + break; + + case LangOptions::GCOnly: + ActionExprEngine(D, true, Visited); + break; + + case LangOptions::HybridGC: + ActionExprEngine(D, false, Visited); + ActionExprEngine(D, true, Visited); + break; + } +} + +//===----------------------------------------------------------------------===// +// AnalysisConsumer creation. +//===----------------------------------------------------------------------===// + +ASTConsumer* ento::CreateAnalysisConsumer(const Preprocessor& pp, + const std::string& outDir, + const AnalyzerOptions& opts, + ArrayRef plugins) { + // Disable the effects of '-Werror' when using the AnalysisConsumer. + pp.getDiagnostics().setWarningsAsErrors(false); + + return new AnalysisConsumer(pp, outDir, opts, plugins); +} + +//===----------------------------------------------------------------------===// +// Ubigraph Visualization. FIXME: Move to separate file. +//===----------------------------------------------------------------------===// + +namespace { + +class UbigraphViz : public ExplodedNode::Auditor { + OwningPtr Out; + llvm::sys::Path Dir, Filename; + unsigned Cntr; + + typedef llvm::DenseMap VMap; + VMap M; + +public: + UbigraphViz(raw_ostream *out, llvm::sys::Path& dir, + llvm::sys::Path& filename); + + ~UbigraphViz(); + + virtual void AddEdge(ExplodedNode *Src, ExplodedNode *Dst); +}; + +} // end anonymous namespace + +static ExplodedNode::Auditor* CreateUbiViz() { + std::string ErrMsg; + + llvm::sys::Path Dir = llvm::sys::Path::GetTemporaryDirectory(&ErrMsg); + if (!ErrMsg.empty()) + return 0; + + llvm::sys::Path Filename = Dir; + Filename.appendComponent("llvm_ubi"); + Filename.makeUnique(true,&ErrMsg); + + if (!ErrMsg.empty()) + return 0; + + llvm::errs() << "Writing '" << Filename.str() << "'.\n"; + + OwningPtr Stream; + Stream.reset(new llvm::raw_fd_ostream(Filename.c_str(), ErrMsg)); + + if (!ErrMsg.empty()) + return 0; + + return new UbigraphViz(Stream.take(), Dir, Filename); +} + +void UbigraphViz::AddEdge(ExplodedNode *Src, ExplodedNode *Dst) { + + assert (Src != Dst && "Self-edges are not allowed."); + + // Lookup the Src. If it is a new node, it's a root. + VMap::iterator SrcI= M.find(Src); + unsigned SrcID; + + if (SrcI == M.end()) { + M[Src] = SrcID = Cntr++; + *Out << "('vertex', " << SrcID << ", ('color','#00ff00'))\n"; + } + else + SrcID = SrcI->second; + + // Lookup the Dst. + VMap::iterator DstI= M.find(Dst); + unsigned DstID; + + if (DstI == M.end()) { + M[Dst] = DstID = Cntr++; + *Out << "('vertex', " << DstID << ")\n"; + } + else { + // We have hit DstID before. Change its style to reflect a cache hit. + DstID = DstI->second; + *Out << "('change_vertex_style', " << DstID << ", 1)\n"; + } + + // Add the edge. + *Out << "('edge', " << SrcID << ", " << DstID + << ", ('arrow','true'), ('oriented', 'true'))\n"; +} + +UbigraphViz::UbigraphViz(raw_ostream *out, llvm::sys::Path& dir, + llvm::sys::Path& filename) + : Out(out), Dir(dir), Filename(filename), Cntr(0) { + + *Out << "('vertex_style_attribute', 0, ('shape', 'icosahedron'))\n"; + *Out << "('vertex_style', 1, 0, ('shape', 'sphere'), ('color', '#ffcc66')," + " ('size', '1.5'))\n"; +} + +UbigraphViz::~UbigraphViz() { + Out.reset(0); + llvm::errs() << "Running 'ubiviz' program... "; + std::string ErrMsg; + llvm::sys::Path Ubiviz = llvm::sys::Program::FindProgramByName("ubiviz"); + std::vector args; + args.push_back(Ubiviz.c_str()); + args.push_back(Filename.c_str()); + args.push_back(0); + + if (llvm::sys::Program::ExecuteAndWait(Ubiviz, &args[0],0,0,0,0,&ErrMsg)) { + llvm::errs() << "Error viewing graph: " << ErrMsg << "\n"; + } + + // Delete the directory. + Dir.eraseFromDisk(true); +} diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.h b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.h new file mode 100644 index 0000000..5a16bff --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.h @@ -0,0 +1,43 @@ +//===--- AnalysisConsumer.h - Front-end Analysis Engine Hooks ---*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This header contains the functions necessary for a front-end to run various +// analyses. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_GR_ANALYSISCONSUMER_H +#define LLVM_CLANG_GR_ANALYSISCONSUMER_H + +#include "clang/Basic/LLVM.h" +#include + +namespace clang { + +class AnalyzerOptions; +class ASTConsumer; +class Preprocessor; +class DiagnosticsEngine; + +namespace ento { +class CheckerManager; + +/// CreateAnalysisConsumer - Creates an ASTConsumer to run various code +/// analysis passes. (The set of analyses run is controlled by command-line +/// options.) +ASTConsumer* CreateAnalysisConsumer(const Preprocessor &pp, + const std::string &output, + const AnalyzerOptions& opts, + ArrayRef plugins); + +} // end GR namespace + +} // end clang namespace + +#endif diff --git a/clang/lib/StaticAnalyzer/Frontend/CMakeLists.txt b/clang/lib/StaticAnalyzer/Frontend/CMakeLists.txt new file mode 100644 index 0000000..bbcb085 --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/CMakeLists.txt @@ -0,0 +1,21 @@ +set(LLVM_NO_RTTI 1) + +set(LLVM_USED_LIBS clangBasic clangLex clangAST clangFrontend clangRewrite + clangStaticAnalyzerCheckers) + +include_directories( ${CMAKE_CURRENT_BINARY_DIR}/../Checkers ) + +add_clang_library(clangStaticAnalyzerFrontend + AnalysisConsumer.cpp + CheckerRegistration.cpp + FrontendActions.cpp + ) + +add_dependencies(clangStaticAnalyzerFrontend + clangStaticAnalyzerCheckers + clangStaticAnalyzerCore + ClangAttrClasses + ClangAttrList + ClangDeclNodes + ClangStmtNodes + ) diff --git a/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp b/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp new file mode 100644 index 0000000..c06da0d --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp @@ -0,0 +1,133 @@ +//===--- CheckerRegistration.cpp - Registration for the Analyzer Checkers -===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Defines the registration function for the analyzer checkers. +// +//===----------------------------------------------------------------------===// + +#include "clang/StaticAnalyzer/Frontend/CheckerRegistration.h" +#include "clang/StaticAnalyzer/Frontend/FrontendActions.h" +#include "clang/StaticAnalyzer/Checkers/ClangCheckers.h" +#include "clang/StaticAnalyzer/Core/CheckerManager.h" +#include "clang/StaticAnalyzer/Core/CheckerOptInfo.h" +#include "clang/StaticAnalyzer/Core/CheckerRegistry.h" +#include "clang/Frontend/AnalyzerOptions.h" +#include "clang/Frontend/FrontendDiagnostic.h" +#include "clang/Basic/Diagnostic.h" +#include "llvm/Support/DynamicLibrary.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/ADT/OwningPtr.h" +#include "llvm/ADT/SmallVector.h" + +using namespace clang; +using namespace ento; +using llvm::sys::DynamicLibrary; + +namespace { +class ClangCheckerRegistry : public CheckerRegistry { + typedef void (*RegisterCheckersFn)(CheckerRegistry &); + + static bool isCompatibleAPIVersion(const char *versionString); + static void warnIncompatible(DiagnosticsEngine *diags, StringRef pluginPath, + const char *pluginAPIVersion); + +public: + ClangCheckerRegistry(ArrayRef plugins, + DiagnosticsEngine *diags = 0); +}; + +} // end anonymous namespace + +ClangCheckerRegistry::ClangCheckerRegistry(ArrayRef plugins, + DiagnosticsEngine *diags) { + registerBuiltinCheckers(*this); + + for (ArrayRef::iterator i = plugins.begin(), e = plugins.end(); + i != e; ++i) { + // Get access to the plugin. + DynamicLibrary lib = DynamicLibrary::getPermanentLibrary(i->c_str()); + + // See if it's compatible with this build of clang. + const char *pluginAPIVersion = + (const char *) lib.getAddressOfSymbol("clang_analyzerAPIVersionString"); + if (!isCompatibleAPIVersion(pluginAPIVersion)) { + warnIncompatible(diags, *i, pluginAPIVersion); + continue; + } + + // Register its checkers. + RegisterCheckersFn registerPluginCheckers = + (RegisterCheckersFn) (intptr_t) lib.getAddressOfSymbol( + "clang_registerCheckers"); + if (registerPluginCheckers) + registerPluginCheckers(*this); + } +} + +bool ClangCheckerRegistry::isCompatibleAPIVersion(const char *versionString) { + // If the version string is null, it's not an analyzer plugin. + if (versionString == 0) + return false; + + // For now, none of the static analyzer API is considered stable. + // Versions must match exactly. + if (strcmp(versionString, CLANG_ANALYZER_API_VERSION_STRING) == 0) + return true; + + return false; +} + +void ClangCheckerRegistry::warnIncompatible(DiagnosticsEngine *diags, + StringRef pluginPath, + const char *pluginAPIVersion) { + if (!diags) + return; + if (!pluginAPIVersion) + return; + + diags->Report(diag::warn_incompatible_analyzer_plugin_api) + << llvm::sys::path::filename(pluginPath); + diags->Report(diag::note_incompatible_analyzer_plugin_api) + << CLANG_ANALYZER_API_VERSION_STRING + << pluginAPIVersion; +} + + +CheckerManager *ento::createCheckerManager(const AnalyzerOptions &opts, + const LangOptions &langOpts, + ArrayRef plugins, + DiagnosticsEngine &diags) { + OwningPtr checkerMgr(new CheckerManager(langOpts)); + + SmallVector checkerOpts; + for (unsigned i = 0, e = opts.CheckersControlList.size(); i != e; ++i) { + const std::pair &opt = opts.CheckersControlList[i]; + checkerOpts.push_back(CheckerOptInfo(opt.first.c_str(), opt.second)); + } + + ClangCheckerRegistry allCheckers(plugins, &diags); + allCheckers.initializeManager(*checkerMgr, checkerOpts); + checkerMgr->finishedCheckerRegistration(); + + for (unsigned i = 0, e = checkerOpts.size(); i != e; ++i) { + if (checkerOpts[i].isUnclaimed()) + diags.Report(diag::warn_unknown_analyzer_checker) + << checkerOpts[i].getName(); + } + + return checkerMgr.take(); +} + +void ento::printCheckerHelp(raw_ostream &out, ArrayRef plugins) { + out << "OVERVIEW: Clang Static Analyzer Checkers List\n\n"; + out << "USAGE: -analyzer-checker \n\n"; + + ClangCheckerRegistry(plugins).printHelp(out); +} diff --git a/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp b/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp new file mode 100644 index 0000000..85a18ec --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/FrontendActions.cpp @@ -0,0 +1,23 @@ +//===--- FrontendActions.cpp ----------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/StaticAnalyzer/Frontend/FrontendActions.h" +#include "clang/Frontend/CompilerInstance.h" +#include "AnalysisConsumer.h" +using namespace clang; +using namespace ento; + +ASTConsumer *AnalysisAction::CreateASTConsumer(CompilerInstance &CI, + StringRef InFile) { + return CreateAnalysisConsumer(CI.getPreprocessor(), + CI.getFrontendOpts().OutputFile, + CI.getAnalyzerOpts(), + CI.getFrontendOpts().Plugins); +} + diff --git a/clang/lib/StaticAnalyzer/Frontend/Makefile b/clang/lib/StaticAnalyzer/Frontend/Makefile new file mode 100644 index 0000000..2698120 --- /dev/null +++ b/clang/lib/StaticAnalyzer/Frontend/Makefile @@ -0,0 +1,19 @@ +##===- clang/lib/StaticAnalyzer/Frontend/Makefile ----------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## +# +# Starting point into the static analyzer land for the driver. +# +##===----------------------------------------------------------------------===## + +CLANG_LEVEL := ../../.. +LIBRARYNAME := clangStaticAnalyzerFrontend + +CPP.Flags += -I${PROJ_OBJ_DIR}/../Checkers + +include $(CLANG_LEVEL)/Makefile -- cgit v1.2.3