| // BugReporter.cpp - Generate PathDiagnostics for Bugs ------------*- C++ -*--// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines BugReporter, a utility class for generating |
| // PathDiagnostics for analyses based on GRSimpleVals. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Analysis/PathSensitive/BugReporter.h" |
| #include "clang/Analysis/PathSensitive/GRExprEngine.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/SourceLocation.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/CFG.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/Analysis/ProgramPoint.h" |
| #include "clang/Analysis/PathDiagnostic.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include <sstream> |
| |
| using namespace clang; |
| |
| BugReporter::~BugReporter() {} |
| GRBugReporter::~GRBugReporter() {} |
| BugReporterData::~BugReporterData() {} |
| BugType::~BugType() {} |
| BugReport::~BugReport() {} |
| RangedBugReport::~RangedBugReport() {} |
| |
| ExplodedGraph<GRState>& GRBugReporter::getGraph() { |
| return Eng.getGraph(); |
| } |
| |
| GRStateManager& GRBugReporter::getStateManager() { |
| return Eng.getStateManager(); |
| } |
| |
| static inline Stmt* GetStmt(const ProgramPoint& P) { |
| if (const PostStmt* PS = dyn_cast<PostStmt>(&P)) { |
| return PS->getStmt(); |
| } |
| else if (const BlockEdge* BE = dyn_cast<BlockEdge>(&P)) { |
| return BE->getSrc()->getTerminator(); |
| } |
| else if (const BlockEntrance* BE = dyn_cast<BlockEntrance>(&P)) { |
| return BE->getFirstStmt(); |
| } |
| |
| assert (false && "Unsupported ProgramPoint."); |
| return NULL; |
| } |
| |
| static inline Stmt* GetStmt(const CFGBlock* B) { |
| if (B->empty()) |
| return const_cast<Stmt*>(B->getTerminator()); |
| else |
| return (*B)[0]; |
| } |
| |
| static inline ExplodedNode<GRState>* |
| GetNextNode(ExplodedNode<GRState>* N) { |
| return N->pred_empty() ? NULL : *(N->pred_begin()); |
| } |
| |
| static Stmt* GetLastStmt(ExplodedNode<GRState>* N) { |
| assert (isa<BlockEntrance>(N->getLocation())); |
| |
| for (N = GetNextNode(N); N; N = GetNextNode(N)) { |
| |
| ProgramPoint P = N->getLocation(); |
| |
| if (PostStmt* PS = dyn_cast<PostStmt>(&P)) |
| return PS->getStmt(); |
| } |
| |
| return NULL; |
| } |
| |
| static void ExecutionContinues(std::ostringstream& os, SourceManager& SMgr, |
| Stmt* S) { |
| |
| if (!S) |
| return; |
| |
| // Slow, but probably doesn't matter. |
| if (os.str().empty()) |
| os << ' '; |
| |
| os << "Execution continues on line " |
| << SMgr.getLogicalLineNumber(S->getLocStart()) << '.'; |
| } |
| |
| |
| static inline void ExecutionContinues(std::ostringstream& os, |
| SourceManager& SMgr, |
| ExplodedNode<GRState>* N) { |
| |
| ExecutionContinues(os, SMgr, GetStmt(N->getLocation())); |
| } |
| |
| static inline void ExecutionContinues(std::ostringstream& os, |
| SourceManager& SMgr, |
| const CFGBlock* B) { |
| |
| ExecutionContinues(os, SMgr, GetStmt(B)); |
| } |
| |
| |
| Stmt* BugReport::getStmt(BugReporter& BR) const { |
| |
| ProgramPoint ProgP = EndNode->getLocation(); |
| Stmt *S = NULL; |
| |
| if (BlockEntrance* BE = dyn_cast<BlockEntrance>(&ProgP)) |
| if (BE->getBlock() == &BR.getCFG()->getExit()) |
| S = GetLastStmt(EndNode); |
| if (!S) |
| S = GetStmt(ProgP); |
| |
| return S; |
| } |
| |
| PathDiagnosticPiece* |
| BugReport::getEndPath(BugReporter& BR, |
| ExplodedNode<GRState>* EndPathNode) { |
| |
| Stmt* S = getStmt(BR); |
| |
| if (!S) |
| return NULL; |
| |
| FullSourceLoc L(S->getLocStart(), BR.getContext().getSourceManager()); |
| PathDiagnosticPiece* P = new PathDiagnosticPiece(L, getDescription()); |
| |
| const SourceRange *Beg, *End; |
| getRanges(BR, Beg, End); |
| |
| for (; Beg != End; ++Beg) |
| P->addRange(*Beg); |
| |
| return P; |
| } |
| |
| void BugReport::getRanges(BugReporter& BR, const SourceRange*& beg, |
| const SourceRange*& end) { |
| |
| if (Expr* E = dyn_cast_or_null<Expr>(getStmt(BR))) { |
| R = E->getSourceRange(); |
| beg = &R; |
| end = beg+1; |
| } |
| else |
| beg = end = 0; |
| } |
| |
| FullSourceLoc BugReport::getLocation(SourceManager& Mgr) { |
| |
| if (!EndNode) |
| return FullSourceLoc(); |
| |
| Stmt* S = GetStmt(EndNode->getLocation()); |
| |
| if (!S) |
| return FullSourceLoc(); |
| |
| return FullSourceLoc(S->getLocStart(), Mgr); |
| } |
| |
| PathDiagnosticPiece* BugReport::VisitNode(ExplodedNode<GRState>* N, |
| ExplodedNode<GRState>* PrevN, |
| ExplodedGraph<GRState>& G, |
| BugReporter& BR) { |
| return NULL; |
| } |
| |
| static std::pair<ExplodedGraph<GRState>*, ExplodedNode<GRState>*> |
| MakeReportGraph(ExplodedGraph<GRState>* G, ExplodedNode<GRState>* N) { |
| |
| llvm::OwningPtr<ExplodedGraph<GRState> > GTrim(G->Trim(&N, &N+1)); |
| |
| // Find the error node in the trimmed graph. |
| |
| ExplodedNode<GRState>* NOld = N; |
| N = 0; |
| |
| for (ExplodedGraph<GRState>::node_iterator |
| I = GTrim->nodes_begin(), E = GTrim->nodes_end(); I != E; ++I) { |
| |
| if (I->getState() == NOld->getState() && |
| I->getLocation() == NOld->getLocation()) { |
| N = &*I; |
| break; |
| } |
| } |
| |
| assert(N); |
| |
| // Create a new graph with a single path. |
| |
| G = new ExplodedGraph<GRState>(GTrim->getCFG(), GTrim->getCodeDecl(), |
| GTrim->getContext()); |
| |
| // Sometimes TrimGraph can contain a cycle. Perform a reverse DFS |
| // to the root node, and then construct a new graph that contains only |
| // a single path. |
| llvm::DenseMap<void*,unsigned> Visited; |
| llvm::SmallVector<ExplodedNode<GRState>*, 10> WS; |
| WS.push_back(N); |
| unsigned cnt = 0; |
| ExplodedNode<GRState>* Root = 0; |
| |
| while (!WS.empty()) { |
| ExplodedNode<GRState>* Node = WS.back(); |
| WS.pop_back(); |
| |
| if (Visited.find(Node) != Visited.end()) |
| continue; |
| |
| Visited[Node] = cnt++; |
| |
| if (Node->pred_empty()) { |
| Root = Node; |
| break; |
| } |
| |
| for (ExplodedNode<GRState>::pred_iterator I=Node->pred_begin(), |
| E=Node->pred_end(); I!=E; ++I) |
| WS.push_back(*I); |
| } |
| |
| assert (Root); |
| |
| // Now walk from the root down the DFS path, always taking the successor |
| // with the lowest number. |
| ExplodedNode<GRState> *Last = 0, *First = 0; |
| |
| for ( N = Root ;;) { |
| |
| // Lookup the number associated with the current node. |
| llvm::DenseMap<void*,unsigned>::iterator I=Visited.find(N); |
| assert (I != Visited.end()); |
| |
| // Create the equivalent node in the new graph with the same state |
| // and location. |
| ExplodedNode<GRState>* NewN = |
| G->getNode(N->getLocation(), N->getState()); |
| |
| // Link up the new node with the previous node. |
| if (Last) |
| NewN->addPredecessor(Last); |
| |
| Last = NewN; |
| |
| // Are we at the final node? |
| if (I->second == 0) { |
| First = NewN; |
| break; |
| } |
| |
| // Find the next successor node. We choose the node that is marked |
| // with the lowest DFS number. |
| ExplodedNode<GRState>::succ_iterator SI = N->succ_begin(); |
| ExplodedNode<GRState>::succ_iterator SE = N->succ_end(); |
| N = 0; |
| |
| for (unsigned MinVal = 0; SI != SE; ++SI) { |
| |
| I = Visited.find(*SI); |
| |
| if (I == Visited.end()) |
| continue; |
| |
| if (!N || I->second < MinVal) { |
| N = *SI; |
| MinVal = I->second; |
| } |
| } |
| |
| assert (N); |
| } |
| |
| assert (First); |
| return std::make_pair(G, First); |
| } |
| |
| static VarDecl* GetMostRecentVarDeclBinding(ExplodedNode<GRState>* N, |
| GRStateManager& VMgr, |
| SVal X) { |
| |
| for ( ; N ; N = N->pred_empty() ? 0 : *N->pred_begin()) { |
| |
| ProgramPoint P = N->getLocation(); |
| |
| if (!isa<PostStmt>(P)) |
| continue; |
| |
| DeclRefExpr* DR = dyn_cast<DeclRefExpr>(cast<PostStmt>(P).getStmt()); |
| |
| if (!DR) |
| continue; |
| |
| SVal Y = VMgr.GetSVal(N->getState(), DR); |
| |
| if (X != Y) |
| continue; |
| |
| VarDecl* VD = dyn_cast<VarDecl>(DR->getDecl()); |
| |
| if (!VD) |
| continue; |
| |
| return VD; |
| } |
| |
| return 0; |
| } |
| |
| namespace { |
| class VISIBILITY_HIDDEN NotableSymbolHandler |
| : public StoreManager::BindingsHandler { |
| |
| SymbolID Sym; |
| const GRState* PrevSt; |
| Stmt* S; |
| GRStateManager& VMgr; |
| ExplodedNode<GRState>* Pred; |
| PathDiagnostic& PD; |
| BugReporter& BR; |
| |
| public: |
| |
| NotableSymbolHandler(SymbolID sym, const GRState* prevst, Stmt* s, |
| GRStateManager& vmgr, ExplodedNode<GRState>* pred, |
| PathDiagnostic& pd, BugReporter& br) |
| : Sym(sym), PrevSt(prevst), S(s), VMgr(vmgr), Pred(pred), PD(pd), BR(br) {} |
| |
| bool HandleBinding(StoreManager& SMgr, Store store, MemRegion* R, SVal V) { |
| |
| SymbolID ScanSym; |
| |
| if (loc::SymbolVal* SV = dyn_cast<loc::SymbolVal>(&V)) |
| ScanSym = SV->getSymbol(); |
| else if (nonloc::SymbolVal* SV = dyn_cast<nonloc::SymbolVal>(&V)) |
| ScanSym = SV->getSymbol(); |
| else |
| return true; |
| |
| if (ScanSym != Sym) |
| return true; |
| |
| // Check if the previous state has this binding. |
| SVal X = VMgr.GetSVal(PrevSt, loc::MemRegionVal(R)); |
| |
| if (X == V) // Same binding? |
| return true; |
| |
| // Different binding. Only handle assignments for now. We don't pull |
| // this check out of the loop because we will eventually handle other |
| // cases. |
| |
| VarDecl *VD = 0; |
| |
| if (BinaryOperator* B = dyn_cast<BinaryOperator>(S)) { |
| if (!B->isAssignmentOp()) |
| return true; |
| |
| // What variable did we assign to? |
| DeclRefExpr* DR = dyn_cast<DeclRefExpr>(B->getLHS()->IgnoreParenCasts()); |
| |
| if (!DR) |
| return true; |
| |
| VD = dyn_cast<VarDecl>(DR->getDecl()); |
| } |
| else if (DeclStmt* DS = dyn_cast<DeclStmt>(S)) { |
| // FIXME: Eventually CFGs won't have DeclStmts. Right now we |
| // assume that each DeclStmt has a single Decl. This invariant |
| // holds by contruction in the CFG. |
| VD = dyn_cast<VarDecl>(*DS->decl_begin()); |
| } |
| |
| if (!VD) |
| return true; |
| |
| // What is the most recently referenced variable with this binding? |
| VarDecl* MostRecent = GetMostRecentVarDeclBinding(Pred, VMgr, V); |
| |
| if (!MostRecent) |
| return true; |
| |
| // Create the diagnostic. |
| |
| FullSourceLoc L(S->getLocStart(), BR.getSourceManager()); |
| |
| if (VD->getType()->isPointerLikeType()) { |
| std::string msg = "'" + std::string(VD->getName()) + |
| "' now aliases '" + MostRecent->getName() + "'"; |
| |
| PD.push_front(new PathDiagnosticPiece(L, msg)); |
| } |
| |
| return true; |
| } |
| }; |
| } |
| |
| static void HandleNotableSymbol(ExplodedNode<GRState>* N, Stmt* S, |
| SymbolID Sym, BugReporter& BR, |
| PathDiagnostic& PD) { |
| |
| ExplodedNode<GRState>* Pred = N->pred_empty() ? 0 : *N->pred_begin(); |
| const GRState* PrevSt = Pred ? Pred->getState() : 0; |
| |
| if (!PrevSt) |
| return; |
| |
| // Look at the region bindings of the current state that map to the |
| // specified symbol. Are any of them not in the previous state? |
| GRStateManager& VMgr = cast<GRBugReporter>(BR).getStateManager(); |
| NotableSymbolHandler H(Sym, PrevSt, S, VMgr, Pred, PD, BR); |
| cast<GRBugReporter>(BR).getStateManager().iterBindings(N->getState(), H); |
| } |
| |
| namespace { |
| class VISIBILITY_HIDDEN ScanNotableSymbols |
| : public StoreManager::BindingsHandler { |
| |
| llvm::SmallSet<SymbolID, 10> AlreadyProcessed; |
| ExplodedNode<GRState>* N; |
| Stmt* S; |
| GRBugReporter& BR; |
| PathDiagnostic& PD; |
| |
| public: |
| ScanNotableSymbols(ExplodedNode<GRState>* n, Stmt* s, GRBugReporter& br, |
| PathDiagnostic& pd) |
| : N(n), S(s), BR(br), PD(pd) {} |
| |
| bool HandleBinding(StoreManager& SMgr, Store store, MemRegion* R, SVal V) { |
| SymbolID ScanSym; |
| |
| if (loc::SymbolVal* SV = dyn_cast<loc::SymbolVal>(&V)) |
| ScanSym = SV->getSymbol(); |
| else if (nonloc::SymbolVal* SV = dyn_cast<nonloc::SymbolVal>(&V)) |
| ScanSym = SV->getSymbol(); |
| else |
| return true; |
| |
| assert (ScanSym.isInitialized()); |
| |
| if (!BR.isNotable(ScanSym)) |
| return true; |
| |
| if (AlreadyProcessed.count(ScanSym)) |
| return true; |
| |
| AlreadyProcessed.insert(ScanSym); |
| |
| HandleNotableSymbol(N, S, ScanSym, BR, PD); |
| return true; |
| } |
| }; |
| } // end anonymous namespace |
| |
| void GRBugReporter::GeneratePathDiagnostic(PathDiagnostic& PD, |
| BugReport& R) { |
| |
| ExplodedNode<GRState>* N = R.getEndNode(); |
| |
| if (!N) return; |
| |
| // Construct a new graph that contains only a single path from the error |
| // node to a root. |
| |
| const std::pair<ExplodedGraph<GRState>*,ExplodedNode<GRState>*> |
| GPair = MakeReportGraph(&getGraph(), N); |
| |
| llvm::OwningPtr<ExplodedGraph<GRState> > ReportGraph(GPair.first); |
| assert(GPair.second->getLocation() == N->getLocation()); |
| N = GPair.second; |
| |
| // Start building the path diagnostic... |
| |
| if (PathDiagnosticPiece* Piece = R.getEndPath(*this, N)) |
| PD.push_back(Piece); |
| else |
| return; |
| |
| ExplodedNode<GRState>* NextNode = N->pred_empty() |
| ? NULL : *(N->pred_begin()); |
| |
| ASTContext& Ctx = getContext(); |
| SourceManager& SMgr = Ctx.getSourceManager(); |
| |
| while (NextNode) { |
| |
| ExplodedNode<GRState>* LastNode = N; |
| N = NextNode; |
| NextNode = GetNextNode(N); |
| |
| ProgramPoint P = N->getLocation(); |
| |
| if (const BlockEdge* BE = dyn_cast<BlockEdge>(&P)) { |
| |
| CFGBlock* Src = BE->getSrc(); |
| CFGBlock* Dst = BE->getDst(); |
| |
| Stmt* T = Src->getTerminator(); |
| |
| if (!T) |
| continue; |
| |
| FullSourceLoc L(T->getLocStart(), SMgr); |
| |
| switch (T->getStmtClass()) { |
| default: |
| break; |
| |
| case Stmt::GotoStmtClass: |
| case Stmt::IndirectGotoStmtClass: { |
| |
| Stmt* S = GetStmt(LastNode->getLocation()); |
| |
| if (!S) |
| continue; |
| |
| std::ostringstream os; |
| |
| os << "Control jumps to line " |
| << SMgr.getLogicalLineNumber(S->getLocStart()) << ".\n"; |
| |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| break; |
| } |
| |
| case Stmt::SwitchStmtClass: { |
| |
| // Figure out what case arm we took. |
| |
| std::ostringstream os; |
| |
| if (Stmt* S = Dst->getLabel()) |
| switch (S->getStmtClass()) { |
| |
| default: |
| assert(false && "Not a valid switch label."); |
| continue; |
| |
| case Stmt::DefaultStmtClass: { |
| |
| os << "Control jumps to the 'default' case at line " |
| << SMgr.getLogicalLineNumber(S->getLocStart()) << ".\n"; |
| |
| break; |
| } |
| |
| case Stmt::CaseStmtClass: { |
| |
| os << "Control jumps to 'case "; |
| |
| CaseStmt* Case = cast<CaseStmt>(S); |
| Expr* LHS = Case->getLHS()->IgnoreParenCasts(); |
| |
| // Determine if it is an enum. |
| |
| bool GetRawInt = true; |
| |
| if (DeclRefExpr* DR = dyn_cast<DeclRefExpr>(LHS)) { |
| |
| // FIXME: Maybe this should be an assertion. Are there cases |
| // were it is not an EnumConstantDecl? |
| EnumConstantDecl* D = dyn_cast<EnumConstantDecl>(DR->getDecl()); |
| if (D) { |
| GetRawInt = false; |
| os << D->getName(); |
| } |
| } |
| |
| if (GetRawInt) { |
| |
| // Not an enum. |
| Expr* CondE = cast<SwitchStmt>(T)->getCond(); |
| unsigned bits = Ctx.getTypeSize(CondE->getType()); |
| llvm::APSInt V(bits, false); |
| |
| if (!LHS->isIntegerConstantExpr(V, Ctx, 0, true)) { |
| assert (false && "Case condition must be constant."); |
| continue; |
| } |
| |
| llvm::raw_os_ostream OS(os); |
| OS << V; |
| } |
| |
| os << ":' at line " |
| << SMgr.getLogicalLineNumber(S->getLocStart()) << ".\n"; |
| |
| break; |
| |
| } |
| } |
| else { |
| os << "'Default' branch taken. "; |
| ExecutionContinues(os, SMgr, LastNode); |
| } |
| |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| break; |
| } |
| |
| case Stmt::BreakStmtClass: |
| case Stmt::ContinueStmtClass: { |
| std::ostringstream os; |
| ExecutionContinues(os, SMgr, LastNode); |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| break; |
| } |
| |
| case Stmt::ConditionalOperatorClass: { |
| |
| std::ostringstream os; |
| os << "'?' condition evaluates to "; |
| |
| if (*(Src->succ_begin()+1) == Dst) |
| os << "false."; |
| else |
| os << "true."; |
| |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| |
| break; |
| } |
| |
| case Stmt::DoStmtClass: { |
| |
| if (*(Src->succ_begin()) == Dst) { |
| |
| std::ostringstream os; |
| |
| os << "Loop condition is true. "; |
| ExecutionContinues(os, SMgr, Dst); |
| |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| } |
| else |
| PD.push_front(new PathDiagnosticPiece(L, |
| "Loop condition is false. Exiting loop.")); |
| |
| break; |
| } |
| |
| case Stmt::WhileStmtClass: |
| case Stmt::ForStmtClass: { |
| |
| if (*(Src->succ_begin()+1) == Dst) { |
| |
| std::ostringstream os; |
| |
| os << "Loop condition is false. "; |
| ExecutionContinues(os, SMgr, Dst); |
| |
| PD.push_front(new PathDiagnosticPiece(L, os.str())); |
| } |
| else |
| PD.push_front(new PathDiagnosticPiece(L, |
| "Loop condition is true. Entering loop body.")); |
| |
| break; |
| } |
| |
| case Stmt::IfStmtClass: { |
| |
| if (*(Src->succ_begin()+1) == Dst) |
| PD.push_front(new PathDiagnosticPiece(L, "Taking false branch.")); |
| else |
| PD.push_front(new PathDiagnosticPiece(L, "Taking true branch.")); |
| |
| break; |
| } |
| } |
| } |
| |
| if (PathDiagnosticPiece* p = R.VisitNode(N, NextNode, *ReportGraph, *this)) |
| PD.push_front(p); |
| |
| if (const PostStmt* PS = dyn_cast<PostStmt>(&P)) { |
| // Scan the region bindings, and see if a "notable" symbol has a new |
| // lval binding. |
| ScanNotableSymbols SNS(N, PS->getStmt(), *this, PD); |
| getStateManager().iterBindings(N->getState(), SNS); |
| } |
| } |
| } |
| |
| |
| bool BugTypeCacheLocation::isCached(BugReport& R) { |
| |
| ExplodedNode<GRState>* N = R.getEndNode(); |
| |
| if (!N) |
| return false; |
| |
| // Cache the location of the error. Don't emit the same |
| // warning for the same error type that occurs at the same program |
| // location but along a different path. |
| |
| return isCached(N->getLocation()); |
| } |
| |
| bool BugTypeCacheLocation::isCached(ProgramPoint P) { |
| if (CachedErrors.count(P)) |
| return true; |
| |
| CachedErrors.insert(P); |
| return false; |
| } |
| |
| void BugReporter::EmitWarning(BugReport& R) { |
| |
| if (R.getBugType().isCached(R)) |
| return; |
| |
| llvm::OwningPtr<PathDiagnostic> D(new PathDiagnostic(R.getName(), |
| R.getCategory())); |
| GeneratePathDiagnostic(*D.get(), R); |
| |
| // Get the meta data. |
| |
| std::pair<const char**, const char**> Meta = R.getExtraDescriptiveText(); |
| |
| for (const char** s = Meta.first; s != Meta.second; ++s) |
| D->addMeta(*s); |
| |
| // Emit a full diagnostic for the path if we have a PathDiagnosticClient. |
| |
| PathDiagnosticClient* PD = getPathDiagnosticClient(); |
| |
| if (PD && !D->empty()) { |
| PD->HandlePathDiagnostic(D.take()); |
| return; |
| } |
| |
| // We don't have a PathDiagnosticClient, but we can still emit a single |
| // line diagnostic. Determine the location. |
| |
| FullSourceLoc L = D->empty() ? R.getLocation(getSourceManager()) |
| : D->back()->getLocation(); |
| |
| |
| // Determine the range. |
| |
| const SourceRange *Beg, *End; |
| |
| if (!D->empty()) { |
| Beg = D->back()->ranges_begin(); |
| End = D->back()->ranges_end(); |
| } |
| else |
| R.getRanges(*this, Beg, End); |
| |
| if (PD) { |
| PathDiagnosticPiece* piece = new PathDiagnosticPiece(L, R.getDescription()); |
| |
| for ( ; Beg != End; ++Beg) |
| piece->addRange(*Beg); |
| |
| D->push_back(piece); |
| PD->HandlePathDiagnostic(D.take()); |
| return; |
| } |
| else { |
| std::string str; |
| |
| if (D->empty()) |
| str = R.getDescription(); |
| else |
| str = D->back()->getString(); |
| |
| Diagnostic& Diag = getDiagnostic(); |
| unsigned ErrorDiag = Diag.getCustomDiagID(Diagnostic::Warning, str.c_str()); |
| |
| switch (End-Beg) { |
| default: assert(0 && "Don't handle this many ranges yet!"); |
| case 0: Diag.Report(L, ErrorDiag); break; |
| case 1: Diag.Report(L, ErrorDiag) << Beg[0]; break; |
| case 2: Diag.Report(L, ErrorDiag) << Beg[0] << Beg[1]; break; |
| case 3: Diag.Report(L, ErrorDiag) << Beg[0] << Beg[1] << Beg[2]; break; |
| } |
| } |
| } |
| |
| void BugReporter::EmitBasicReport(const char* name, const char* str, |
| SourceLocation Loc, |
| SourceRange* RBeg, unsigned NumRanges) { |
| EmitBasicReport(name, "", str, Loc, RBeg, NumRanges); |
| } |
| |
| void BugReporter::EmitBasicReport(const char* name, const char* category, |
| const char* str, SourceLocation Loc, |
| SourceRange* RBeg, unsigned NumRanges) { |
| |
| SimpleBugType BT(name, category, 0); |
| DiagCollector C(BT); |
| Diagnostic& Diag = getDiagnostic(); |
| |
| DiagnosticClient *OldClient = Diag.getClient(); |
| Diag.setClient(&C); |
| FullSourceLoc L = getContext().getFullLoc(Loc); |
| unsigned DiagID = Diag.getCustomDiagID(Diagnostic::Warning, str); |
| |
| switch (NumRanges) { |
| default: assert(0 && "Don't handle this many ranges yet!"); |
| case 0: Diag.Report(L, DiagID); break; |
| case 1: Diag.Report(L, DiagID) << RBeg[0]; break; |
| case 2: Diag.Report(L, DiagID) << RBeg[0] << RBeg[1]; break; |
| case 3: Diag.Report(L, DiagID) << RBeg[0] << RBeg[1] << RBeg[2]; break; |
| } |
| |
| Diag.setClient(OldClient); |
| |
| for (DiagCollector::iterator I = C.begin(), E = C.end(); I != E; ++I) |
| EmitWarning(*I); |
| } |
| |