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llvm-project/clang/lib/StaticAnalyzer/Core/CheckerManager.cpp

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//===- CheckerManager.cpp - Static Analyzer Checker Manager ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Defines the Static Analyzer Checker Manager.
//
//===----------------------------------------------------------------------===//
#include "clang/StaticAnalyzer/Core/CheckerManager.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/Stmt.h"
#include "clang/Analysis/ProgramPoint.h"
#include "clang/Basic/JsonSupport.h"
#include "clang/Basic/LLVM.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CoreEngine.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
#include <vector>
using namespace clang;
using namespace ento;
bool CheckerManager::hasPathSensitiveCheckers() const {
return !StmtCheckers.empty() ||
!PreObjCMessageCheckers.empty() ||
!PostObjCMessageCheckers.empty() ||
!PreCallCheckers.empty() ||
!PostCallCheckers.empty() ||
!LocationCheckers.empty() ||
!BindCheckers.empty() ||
!EndAnalysisCheckers.empty() ||
!EndFunctionCheckers.empty() ||
!BranchConditionCheckers.empty() ||
!LiveSymbolsCheckers.empty() ||
!DeadSymbolsCheckers.empty() ||
!RegionChangesCheckers.empty() ||
!EvalAssumeCheckers.empty() ||
!EvalCallCheckers.empty();
}
void CheckerManager::finishedCheckerRegistration() {
#ifndef NDEBUG
// Make sure that for every event that has listeners, there is at least
// one dispatcher registered for it.
for (const auto &Event : Events)
assert(Event.second.HasDispatcher &&
"No dispatcher registered for an event");
#endif
}
void CheckerManager::reportInvalidCheckerOptionValue(
const CheckerBase *C, StringRef OptionName,
StringRef ExpectedValueDesc) const {
getDiagnostics().Report(diag::err_analyzer_checker_option_invalid_input)
<< (llvm::Twine() + C->getTagDescription() + ":" + OptionName).str()
<< ExpectedValueDesc;
}
//===----------------------------------------------------------------------===//
// Functions for running checkers for AST traversing..
//===----------------------------------------------------------------------===//
void CheckerManager::runCheckersOnASTDecl(const Decl *D, AnalysisManager& mgr,
BugReporter &BR) {
assert(D);
unsigned DeclKind = D->getKind();
CachedDeclCheckers *checkers = nullptr;
CachedDeclCheckersMapTy::iterator CCI = CachedDeclCheckersMap.find(DeclKind);
if (CCI != CachedDeclCheckersMap.end()) {
checkers = &(CCI->second);
} else {
// Find the checkers that should run for this Decl and cache them.
checkers = &CachedDeclCheckersMap[DeclKind];
for (const auto &info : DeclCheckers)
if (info.IsForDeclFn(D))
checkers->push_back(info.CheckFn);
}
assert(checkers);
for (const auto &checker : *checkers)
checker(D, mgr, BR);
}
void CheckerManager::runCheckersOnASTBody(const Decl *D, AnalysisManager& mgr,
BugReporter &BR) {
assert(D && D->hasBody());
for (const auto &BodyChecker : BodyCheckers)
BodyChecker(D, mgr, BR);
}
//===----------------------------------------------------------------------===//
// Functions for running checkers for path-sensitive checking.
//===----------------------------------------------------------------------===//
template <typename CHECK_CTX>
static void expandGraphWithCheckers(CHECK_CTX checkCtx,
ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src) {
const NodeBuilderContext &BldrCtx = checkCtx.Eng.getBuilderContext();
if (Src.empty())
return;
typename CHECK_CTX::CheckersTy::const_iterator
I = checkCtx.checkers_begin(), E = checkCtx.checkers_end();
if (I == E) {
Dst.insert(Src);
return;
}
ExplodedNodeSet Tmp1, Tmp2;
const ExplodedNodeSet *PrevSet = &Src;
for (; I != E; ++I) {
ExplodedNodeSet *CurrSet = nullptr;
if (I+1 == E)
CurrSet = &Dst;
else {
CurrSet = (PrevSet == &Tmp1) ? &Tmp2 : &Tmp1;
CurrSet->clear();
}
NodeBuilder B(*PrevSet, *CurrSet, BldrCtx);
for (const auto &NI : *PrevSet)
checkCtx.runChecker(*I, B, NI);
// If all the produced transitions are sinks, stop.
if (CurrSet->empty())
return;
// Update which NodeSet is the current one.
PrevSet = CurrSet;
}
}
namespace {
struct CheckStmtContext {
using CheckersTy = SmallVectorImpl<CheckerManager::CheckStmtFunc>;
bool IsPreVisit;
const CheckersTy &Checkers;
const Stmt *S;
ExprEngine &Eng;
bool WasInlined;
CheckStmtContext(bool isPreVisit, const CheckersTy &checkers,
const Stmt *s, ExprEngine &eng, bool wasInlined = false)
: IsPreVisit(isPreVisit), Checkers(checkers), S(s), Eng(eng),
WasInlined(wasInlined) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckStmtFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
// FIXME: Remove respondsToCallback from CheckerContext;
ProgramPoint::Kind K = IsPreVisit ? ProgramPoint::PreStmtKind :
ProgramPoint::PostStmtKind;
const ProgramPoint &L = ProgramPoint::getProgramPoint(S, K,
Pred->getLocationContext(), checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L, WasInlined);
checkFn(S, C);
}
};
} // namespace
/// Run checkers for visiting Stmts.
void CheckerManager::runCheckersForStmt(bool isPreVisit,
ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
const Stmt *S,
ExprEngine &Eng,
bool WasInlined) {
CheckStmtContext C(isPreVisit, getCachedStmtCheckersFor(S, isPreVisit),
S, Eng, WasInlined);
expandGraphWithCheckers(C, Dst, Src);
}
namespace {
struct CheckObjCMessageContext {
using CheckersTy = std::vector<CheckerManager::CheckObjCMessageFunc>;
ObjCMessageVisitKind Kind;
bool WasInlined;
const CheckersTy &Checkers;
const ObjCMethodCall &Msg;
ExprEngine &Eng;
CheckObjCMessageContext(ObjCMessageVisitKind visitKind,
const CheckersTy &checkers,
const ObjCMethodCall &msg, ExprEngine &eng,
bool wasInlined)
: Kind(visitKind), WasInlined(wasInlined), Checkers(checkers), Msg(msg),
Eng(eng) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckObjCMessageFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
bool IsPreVisit;
switch (Kind) {
case ObjCMessageVisitKind::Pre:
IsPreVisit = true;
break;
case ObjCMessageVisitKind::MessageNil:
case ObjCMessageVisitKind::Post:
IsPreVisit = false;
break;
}
const ProgramPoint &L = Msg.getProgramPoint(IsPreVisit,checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L, WasInlined);
checkFn(*Msg.cloneWithState<ObjCMethodCall>(Pred->getState()), C);
}
};
} // namespace
/// Run checkers for visiting obj-c messages.
void CheckerManager::runCheckersForObjCMessage(ObjCMessageVisitKind visitKind,
ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
const ObjCMethodCall &msg,
ExprEngine &Eng,
bool WasInlined) {
const auto &checkers = getObjCMessageCheckers(visitKind);
CheckObjCMessageContext C(visitKind, checkers, msg, Eng, WasInlined);
expandGraphWithCheckers(C, Dst, Src);
}
const std::vector<CheckerManager::CheckObjCMessageFunc> &
CheckerManager::getObjCMessageCheckers(ObjCMessageVisitKind Kind) const {
switch (Kind) {
case ObjCMessageVisitKind::Pre:
return PreObjCMessageCheckers;
break;
case ObjCMessageVisitKind::Post:
return PostObjCMessageCheckers;
case ObjCMessageVisitKind::MessageNil:
return ObjCMessageNilCheckers;
}
llvm_unreachable("Unknown Kind");
}
namespace {
// FIXME: This has all the same signatures as CheckObjCMessageContext.
// Is there a way we can merge the two?
struct CheckCallContext {
using CheckersTy = std::vector<CheckerManager::CheckCallFunc>;
bool IsPreVisit, WasInlined;
const CheckersTy &Checkers;
const CallEvent &Call;
ExprEngine &Eng;
CheckCallContext(bool isPreVisit, const CheckersTy &checkers,
const CallEvent &call, ExprEngine &eng,
bool wasInlined)
: IsPreVisit(isPreVisit), WasInlined(wasInlined), Checkers(checkers),
Call(call), Eng(eng) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckCallFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
const ProgramPoint &L = Call.getProgramPoint(IsPreVisit,checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L, WasInlined);
checkFn(*Call.cloneWithState(Pred->getState()), C);
}
};
} // namespace
/// Run checkers for visiting an abstract call event.
void CheckerManager::runCheckersForCallEvent(bool isPreVisit,
ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
const CallEvent &Call,
ExprEngine &Eng,
bool WasInlined) {
CheckCallContext C(isPreVisit,
isPreVisit ? PreCallCheckers
: PostCallCheckers,
Call, Eng, WasInlined);
expandGraphWithCheckers(C, Dst, Src);
}
namespace {
struct CheckLocationContext {
using CheckersTy = std::vector<CheckerManager::CheckLocationFunc>;
const CheckersTy &Checkers;
SVal Loc;
bool IsLoad;
const Stmt *NodeEx; /* Will become a CFGStmt */
const Stmt *BoundEx;
ExprEngine &Eng;
CheckLocationContext(const CheckersTy &checkers,
SVal loc, bool isLoad, const Stmt *NodeEx,
const Stmt *BoundEx,
ExprEngine &eng)
: Checkers(checkers), Loc(loc), IsLoad(isLoad), NodeEx(NodeEx),
BoundEx(BoundEx), Eng(eng) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckLocationFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
ProgramPoint::Kind K = IsLoad ? ProgramPoint::PreLoadKind :
ProgramPoint::PreStoreKind;
const ProgramPoint &L =
ProgramPoint::getProgramPoint(NodeEx, K,
Pred->getLocationContext(),
checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
checkFn(Loc, IsLoad, BoundEx, C);
}
};
} // namespace
/// Run checkers for load/store of a location.
void CheckerManager::runCheckersForLocation(ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
SVal location, bool isLoad,
const Stmt *NodeEx,
const Stmt *BoundEx,
ExprEngine &Eng) {
CheckLocationContext C(LocationCheckers, location, isLoad, NodeEx,
BoundEx, Eng);
expandGraphWithCheckers(C, Dst, Src);
}
namespace {
struct CheckBindContext {
using CheckersTy = std::vector<CheckerManager::CheckBindFunc>;
const CheckersTy &Checkers;
SVal Loc;
SVal Val;
const Stmt *S;
ExprEngine &Eng;
const ProgramPoint &PP;
CheckBindContext(const CheckersTy &checkers,
SVal loc, SVal val, const Stmt *s, ExprEngine &eng,
const ProgramPoint &pp)
: Checkers(checkers), Loc(loc), Val(val), S(s), Eng(eng), PP(pp) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckBindFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
const ProgramPoint &L = PP.withTag(checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
checkFn(Loc, Val, S, C);
}
};
} // namespace
/// Run checkers for binding of a value to a location.
void CheckerManager::runCheckersForBind(ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
SVal location, SVal val,
const Stmt *S, ExprEngine &Eng,
const ProgramPoint &PP) {
CheckBindContext C(BindCheckers, location, val, S, Eng, PP);
expandGraphWithCheckers(C, Dst, Src);
}
void CheckerManager::runCheckersForEndAnalysis(ExplodedGraph &G,
BugReporter &BR,
ExprEngine &Eng) {
for (const auto &EndAnalysisChecker : EndAnalysisCheckers)
EndAnalysisChecker(G, BR, Eng);
}
namespace {
struct CheckBeginFunctionContext {
using CheckersTy = std::vector<CheckerManager::CheckBeginFunctionFunc>;
const CheckersTy &Checkers;
ExprEngine &Eng;
const ProgramPoint &PP;
CheckBeginFunctionContext(const CheckersTy &Checkers, ExprEngine &Eng,
const ProgramPoint &PP)
: Checkers(Checkers), Eng(Eng), PP(PP) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckBeginFunctionFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
const ProgramPoint &L = PP.withTag(checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
checkFn(C);
}
};
} // namespace
void CheckerManager::runCheckersForBeginFunction(ExplodedNodeSet &Dst,
const BlockEdge &L,
ExplodedNode *Pred,
ExprEngine &Eng) {
ExplodedNodeSet Src;
Src.insert(Pred);
CheckBeginFunctionContext C(BeginFunctionCheckers, Eng, L);
expandGraphWithCheckers(C, Dst, Src);
}
/// Run checkers for end of path.
// Note, We do not chain the checker output (like in expandGraphWithCheckers)
// for this callback since end of path nodes are expected to be final.
void CheckerManager::runCheckersForEndFunction(NodeBuilderContext &BC,
ExplodedNodeSet &Dst,
ExplodedNode *Pred,
ExprEngine &Eng,
const ReturnStmt *RS) {
// We define the builder outside of the loop because if at least one checker
// creates a successor for Pred, we do not need to generate an
// autotransition for it.
NodeBuilder Bldr(Pred, Dst, BC);
for (const auto &checkFn : EndFunctionCheckers) {
const ProgramPoint &L =
FunctionExitPoint(RS, Pred->getLocationContext(), checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
checkFn(RS, C);
}
}
namespace {
struct CheckBranchConditionContext {
using CheckersTy = std::vector<CheckerManager::CheckBranchConditionFunc>;
const CheckersTy &Checkers;
const Stmt *Condition;
ExprEngine &Eng;
CheckBranchConditionContext(const CheckersTy &checkers,
const Stmt *Cond, ExprEngine &eng)
: Checkers(checkers), Condition(Cond), Eng(eng) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckBranchConditionFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
ProgramPoint L = PostCondition(Condition, Pred->getLocationContext(),
checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
checkFn(Condition, C);
}
};
} // namespace
/// Run checkers for branch condition.
void CheckerManager::runCheckersForBranchCondition(const Stmt *Condition,
ExplodedNodeSet &Dst,
ExplodedNode *Pred,
ExprEngine &Eng) {
ExplodedNodeSet Src;
Src.insert(Pred);
CheckBranchConditionContext C(BranchConditionCheckers, Condition, Eng);
expandGraphWithCheckers(C, Dst, Src);
}
namespace {
struct CheckNewAllocatorContext {
using CheckersTy = std::vector<CheckerManager::CheckNewAllocatorFunc>;
const CheckersTy &Checkers;
const CXXAllocatorCall &Call;
bool WasInlined;
ExprEngine &Eng;
CheckNewAllocatorContext(const CheckersTy &Checkers,
const CXXAllocatorCall &Call, bool WasInlined,
ExprEngine &Eng)
: Checkers(Checkers), Call(Call), WasInlined(WasInlined), Eng(Eng) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckNewAllocatorFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
ProgramPoint L =
PostAllocatorCall(Call.getOriginExpr(), Pred->getLocationContext());
CheckerContext C(Bldr, Eng, Pred, L, WasInlined);
checkFn(cast<CXXAllocatorCall>(*Call.cloneWithState(Pred->getState())),
C);
}
};
} // namespace
void CheckerManager::runCheckersForNewAllocator(const CXXAllocatorCall &Call,
ExplodedNodeSet &Dst,
ExplodedNode *Pred,
ExprEngine &Eng,
bool WasInlined) {
ExplodedNodeSet Src;
Src.insert(Pred);
CheckNewAllocatorContext C(NewAllocatorCheckers, Call, WasInlined, Eng);
expandGraphWithCheckers(C, Dst, Src);
}
/// Run checkers for live symbols.
void CheckerManager::runCheckersForLiveSymbols(ProgramStateRef state,
SymbolReaper &SymReaper) {
for (const auto &LiveSymbolsChecker : LiveSymbolsCheckers)
LiveSymbolsChecker(state, SymReaper);
}
namespace {
struct CheckDeadSymbolsContext {
using CheckersTy = std::vector<CheckerManager::CheckDeadSymbolsFunc>;
const CheckersTy &Checkers;
SymbolReaper &SR;
const Stmt *S;
ExprEngine &Eng;
ProgramPoint::Kind ProgarmPointKind;
CheckDeadSymbolsContext(const CheckersTy &checkers, SymbolReaper &sr,
const Stmt *s, ExprEngine &eng,
ProgramPoint::Kind K)
: Checkers(checkers), SR(sr), S(s), Eng(eng), ProgarmPointKind(K) {}
CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
void runChecker(CheckerManager::CheckDeadSymbolsFunc checkFn,
NodeBuilder &Bldr, ExplodedNode *Pred) {
const ProgramPoint &L = ProgramPoint::getProgramPoint(S, ProgarmPointKind,
Pred->getLocationContext(), checkFn.Checker);
CheckerContext C(Bldr, Eng, Pred, L);
// Note, do not pass the statement to the checkers without letting them
// differentiate if we ran remove dead bindings before or after the
// statement.
checkFn(SR, C);
}
};
} // namespace
/// Run checkers for dead symbols.
void CheckerManager::runCheckersForDeadSymbols(ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
SymbolReaper &SymReaper,
const Stmt *S,
ExprEngine &Eng,
ProgramPoint::Kind K) {
CheckDeadSymbolsContext C(DeadSymbolsCheckers, SymReaper, S, Eng, K);
expandGraphWithCheckers(C, Dst, Src);
}
/// Run checkers for region changes.
ProgramStateRef
CheckerManager::runCheckersForRegionChanges(ProgramStateRef state,
const InvalidatedSymbols *invalidated,
ArrayRef<const MemRegion *> ExplicitRegions,
ArrayRef<const MemRegion *> Regions,
const LocationContext *LCtx,
const CallEvent *Call) {
for (const auto &RegionChangesChecker : RegionChangesCheckers) {
// If any checker declares the state infeasible (or if it starts that way),
// bail out.
if (!state)
return nullptr;
state = RegionChangesChecker(state, invalidated, ExplicitRegions, Regions,
LCtx, Call);
}
return state;
}
/// Run checkers to process symbol escape event.
ProgramStateRef
CheckerManager::runCheckersForPointerEscape(ProgramStateRef State,
const InvalidatedSymbols &Escaped,
const CallEvent *Call,
PointerEscapeKind Kind,
RegionAndSymbolInvalidationTraits *ETraits) {
assert((Call != nullptr ||
(Kind != PSK_DirectEscapeOnCall &&
Kind != PSK_IndirectEscapeOnCall)) &&
"Call must not be NULL when escaping on call");
for (const auto &PointerEscapeChecker : PointerEscapeCheckers) {
// If any checker declares the state infeasible (or if it starts that
// way), bail out.
if (!State)
return nullptr;
State = PointerEscapeChecker(State, Escaped, Call, Kind, ETraits);
}
return State;
}
/// Run checkers for handling assumptions on symbolic values.
ProgramStateRef
CheckerManager::runCheckersForEvalAssume(ProgramStateRef state,
SVal Cond, bool Assumption) {
for (const auto &EvalAssumeChecker : EvalAssumeCheckers) {
// If any checker declares the state infeasible (or if it starts that way),
// bail out.
if (!state)
return nullptr;
state = EvalAssumeChecker(state, Cond, Assumption);
}
return state;
}
/// Run checkers for evaluating a call.
/// Only one checker will evaluate the call.
void CheckerManager::runCheckersForEvalCall(ExplodedNodeSet &Dst,
const ExplodedNodeSet &Src,
const CallEvent &Call,
ExprEngine &Eng,
const EvalCallOptions &CallOpts) {
for (auto *const Pred : Src) {
bool anyEvaluated = false;
ExplodedNodeSet checkDst;
NodeBuilder B(Pred, checkDst, Eng.getBuilderContext());
// Check if any of the EvalCall callbacks can evaluate the call.
for (const auto &EvalCallChecker : EvalCallCheckers) {
// TODO: Support the situation when the call doesn't correspond
// to any Expr.
ProgramPoint L = ProgramPoint::getProgramPoint(
Call.getOriginExpr(), ProgramPoint::PostStmtKind,
Pred->getLocationContext(), EvalCallChecker.Checker);
bool evaluated = false;
{ // CheckerContext generates transitions(populates checkDest) on
// destruction, so introduce the scope to make sure it gets properly
// populated.
CheckerContext C(B, Eng, Pred, L);
evaluated = EvalCallChecker(Call, C);
}
assert(!(evaluated && anyEvaluated)
&& "There are more than one checkers evaluating the call");
if (evaluated) {
anyEvaluated = true;
Dst.insert(checkDst);
#ifdef NDEBUG
break; // on release don't check that no other checker also evals.
#endif
}
}
// If none of the checkers evaluated the call, ask ExprEngine to handle it.
if (!anyEvaluated) {
NodeBuilder B(Pred, Dst, Eng.getBuilderContext());
Eng.defaultEvalCall(B, Pred, Call, CallOpts);
}
}
}
/// Run checkers for the entire Translation Unit.
void CheckerManager::runCheckersOnEndOfTranslationUnit(
const TranslationUnitDecl *TU,
AnalysisManager &mgr,
BugReporter &BR) {
for (const auto &EndOfTranslationUnitChecker : EndOfTranslationUnitCheckers)
EndOfTranslationUnitChecker(TU, mgr, BR);
}
void CheckerManager::runCheckersForPrintStateJson(raw_ostream &Out,
ProgramStateRef State,
const char *NL,
unsigned int Space,
bool IsDot) const {
Indent(Out, Space, IsDot) << "\"checker_messages\": ";
// Create a temporary stream to see whether we have any message.
SmallString<1024> TempBuf;
llvm::raw_svector_ostream TempOut(TempBuf);
unsigned int InnerSpace = Space + 2;
// Create the new-line in JSON with enough space.
SmallString<128> NewLine;
llvm::raw_svector_ostream NLOut(NewLine);
NLOut << "\", " << NL; // Inject the ending and a new line
Indent(NLOut, InnerSpace, IsDot) << "\""; // then begin the next message.
++Space;
bool HasMessage = false;
// Store the last CheckerTag.
const void *LastCT = nullptr;
for (const auto &CT : CheckerTags) {
// See whether the current checker has a message.
CT.second->printState(TempOut, State, /*NL=*/NewLine.c_str(), /*Sep=*/"");
if (TempBuf.empty())
continue;
if (!HasMessage) {
Out << '[' << NL;
HasMessage = true;
}
LastCT = &CT;
TempBuf.clear();
}
for (const auto &CT : CheckerTags) {
// See whether the current checker has a message.
CT.second->printState(TempOut, State, /*NL=*/NewLine.c_str(), /*Sep=*/"");
if (TempBuf.empty())
continue;
Indent(Out, Space, IsDot)
<< "{ \"checker\": \"" << CT.second->getCheckerName().getName()
<< "\", \"messages\": [" << NL;
Indent(Out, InnerSpace, IsDot)
<< '\"' << TempBuf.str().trim() << '\"' << NL;
Indent(Out, Space, IsDot) << "]}";
if (&CT != LastCT)
Out << ',';
Out << NL;
TempBuf.clear();
}
// It is the last element of the 'program_state' so do not add a comma.
if (HasMessage)
Indent(Out, --Space, IsDot) << "]";
else
Out << "null";
Out << NL;
}
//===----------------------------------------------------------------------===//
// Internal registration functions for AST traversing.
//===----------------------------------------------------------------------===//
void CheckerManager::_registerForDecl(CheckDeclFunc checkfn,
HandlesDeclFunc isForDeclFn) {
DeclCheckerInfo info = { checkfn, isForDeclFn };
DeclCheckers.push_back(info);
}
void CheckerManager::_registerForBody(CheckDeclFunc checkfn) {
BodyCheckers.push_back(checkfn);
}
//===----------------------------------------------------------------------===//
// Internal registration functions for path-sensitive checking.
//===----------------------------------------------------------------------===//
void CheckerManager::_registerForPreStmt(CheckStmtFunc checkfn,
HandlesStmtFunc isForStmtFn) {
StmtCheckerInfo info = { checkfn, isForStmtFn, /*IsPreVisit*/true };
StmtCheckers.push_back(info);
}
void CheckerManager::_registerForPostStmt(CheckStmtFunc checkfn,
HandlesStmtFunc isForStmtFn) {
StmtCheckerInfo info = { checkfn, isForStmtFn, /*IsPreVisit*/false };
StmtCheckers.push_back(info);
}
void CheckerManager::_registerForPreObjCMessage(CheckObjCMessageFunc checkfn) {
PreObjCMessageCheckers.push_back(checkfn);
}
void CheckerManager::_registerForObjCMessageNil(CheckObjCMessageFunc checkfn) {
ObjCMessageNilCheckers.push_back(checkfn);
}
void CheckerManager::_registerForPostObjCMessage(CheckObjCMessageFunc checkfn) {
PostObjCMessageCheckers.push_back(checkfn);
}
void CheckerManager::_registerForPreCall(CheckCallFunc checkfn) {
PreCallCheckers.push_back(checkfn);
}
void CheckerManager::_registerForPostCall(CheckCallFunc checkfn) {
PostCallCheckers.push_back(checkfn);
}
void CheckerManager::_registerForLocation(CheckLocationFunc checkfn) {
LocationCheckers.push_back(checkfn);
}
void CheckerManager::_registerForBind(CheckBindFunc checkfn) {
BindCheckers.push_back(checkfn);
}
void CheckerManager::_registerForEndAnalysis(CheckEndAnalysisFunc checkfn) {
EndAnalysisCheckers.push_back(checkfn);
}
void CheckerManager::_registerForBeginFunction(CheckBeginFunctionFunc checkfn) {
BeginFunctionCheckers.push_back(checkfn);
}
void CheckerManager::_registerForEndFunction(CheckEndFunctionFunc checkfn) {
EndFunctionCheckers.push_back(checkfn);
}
void CheckerManager::_registerForBranchCondition(
CheckBranchConditionFunc checkfn) {
BranchConditionCheckers.push_back(checkfn);
}
void CheckerManager::_registerForNewAllocator(CheckNewAllocatorFunc checkfn) {
NewAllocatorCheckers.push_back(checkfn);
}
void CheckerManager::_registerForLiveSymbols(CheckLiveSymbolsFunc checkfn) {
LiveSymbolsCheckers.push_back(checkfn);
}
void CheckerManager::_registerForDeadSymbols(CheckDeadSymbolsFunc checkfn) {
DeadSymbolsCheckers.push_back(checkfn);
}
void CheckerManager::_registerForRegionChanges(CheckRegionChangesFunc checkfn) {
RegionChangesCheckers.push_back(checkfn);
}
void CheckerManager::_registerForPointerEscape(CheckPointerEscapeFunc checkfn){
PointerEscapeCheckers.push_back(checkfn);
}
void CheckerManager::_registerForConstPointerEscape(
CheckPointerEscapeFunc checkfn) {
PointerEscapeCheckers.push_back(checkfn);
}
void CheckerManager::_registerForEvalAssume(EvalAssumeFunc checkfn) {
EvalAssumeCheckers.push_back(checkfn);
}
void CheckerManager::_registerForEvalCall(EvalCallFunc checkfn) {
EvalCallCheckers.push_back(checkfn);
}
void CheckerManager::_registerForEndOfTranslationUnit(
CheckEndOfTranslationUnit checkfn) {
EndOfTranslationUnitCheckers.push_back(checkfn);
}
//===----------------------------------------------------------------------===//
// Implementation details.
//===----------------------------------------------------------------------===//
const CheckerManager::CachedStmtCheckers &
CheckerManager::getCachedStmtCheckersFor(const Stmt *S, bool isPreVisit) {
assert(S);
unsigned Key = (S->getStmtClass() << 1) | unsigned(isPreVisit);
CachedStmtCheckersMapTy::iterator CCI = CachedStmtCheckersMap.find(Key);
if (CCI != CachedStmtCheckersMap.end())
return CCI->second;
// Find the checkers that should run for this Stmt and cache them.
CachedStmtCheckers &Checkers = CachedStmtCheckersMap[Key];
for (const auto &Info : StmtCheckers)
if (Info.IsPreVisit == isPreVisit && Info.IsForStmtFn(S))
Checkers.push_back(Info.CheckFn);
return Checkers;
}
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