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[analyzer] Add PostStmt callback for ArraySubscriptExpr 

A patch by Jan Smets!

Differential Revision: https://reviews.llvm.org/D25009

llvm-svn: 283253
This commit is contained in:
Anna Zaks 2016-10-04 20:49:31 +00:00
parent bfdbea6481
commit fb859a934a
2 changed files with 23 additions and 9 deletions
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14
clang/lib/StaticAnalyzer/Checkers/AnalysisOrderChecker.cpp
View File

@ -25,7 +25,9 @@ using namespace ento;
namespace {
class AnalysisOrderChecker : public Checker< check::PreStmt<CastExpr>,
check::PostStmt<CastExpr>> {
check::PostStmt<CastExpr>,
check::PreStmt<ArraySubscriptExpr>,
check::PostStmt<ArraySubscriptExpr>> {
bool isCallbackEnabled(CheckerContext &C, StringRef CallbackName) const {
AnalyzerOptions &Opts = C.getAnalysisManager().getAnalyzerOptions();
return Opts.getBooleanOption("*", false, this) ||
@ -44,6 +46,16 @@ public:
llvm::errs() << "PostStmt<CastExpr> (Kind : " << CE->getCastKindName()
<< ")\n";
}
void checkPreStmt(const ArraySubscriptExpr *SubExpr, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtArraySubscriptExpr"))
llvm::errs() << "PreStmt<ArraySubscriptExpr>\n";
}
void checkPostStmt(const ArraySubscriptExpr *SubExpr, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtArraySubscriptExpr"))
llvm::errs() << "PostStmt<ArraySubscriptExpr>\n";
}
};
}

18
clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
View File

@ -1968,24 +1968,26 @@ void ExprEngine::VisitLvalArraySubscriptExpr(const ArraySubscriptExpr *A,
const Expr *Base = A->getBase()->IgnoreParens();
const Expr *Idx = A->getIdx()->IgnoreParens();
ExplodedNodeSet checkerPreStmt;
getCheckerManager().runCheckersForPreStmt(checkerPreStmt, Pred, A, *this);
ExplodedNodeSet CheckerPreStmt;
getCheckerManager().runCheckersForPreStmt(CheckerPreStmt, Pred, A, *this);
StmtNodeBuilder Bldr(checkerPreStmt, Dst, *currBldrCtx);
ExplodedNodeSet EvalSet;
StmtNodeBuilder Bldr(CheckerPreStmt, EvalSet, *currBldrCtx);
assert(A->isGLValue() ||
(!AMgr.getLangOpts().CPlusPlus &&
A->getType().isCForbiddenLValueType()));
for (ExplodedNodeSet::iterator it = checkerPreStmt.begin(),
ei = checkerPreStmt.end(); it != ei; ++it) {
const LocationContext *LCtx = (*it)->getLocationContext();
ProgramStateRef state = (*it)->getState();
for (auto *Node : CheckerPreStmt) {
const LocationContext *LCtx = Node->getLocationContext();
ProgramStateRef state = Node->getState();
SVal V = state->getLValue(A->getType(),
state->getSVal(Idx, LCtx),
state->getSVal(Base, LCtx));
Bldr.generateNode(A, *it, state->BindExpr(A, LCtx, V), nullptr,
Bldr.generateNode(A, Node, state->BindExpr(A, LCtx, V), nullptr,
ProgramPoint::PostLValueKind);
}
getCheckerManager().runCheckersForPostStmt(Dst, EvalSet, A, *this);
}
/// VisitMemberExpr - Transfer function for member expressions.