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Diffstat (limited to 'clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp')
-rw-r--r--clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp13
1 files changed, 9 insertions, 4 deletions
diff --git a/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
index 152b937bb03..368d5ce3574 100644
--- a/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
@@ -111,6 +111,12 @@ static bool suppressReport(const Expr *E) {
return E->getType().getQualifiers().hasAddressSpace();
}
+static bool isDeclRefExprToReference(const Expr *E) {
+ if (const auto *DRE = dyn_cast<DeclRefExpr>(E))
+ return DRE->getDecl()->getType()->isReferenceType();
+ return false;
+}
+
void DereferenceChecker::reportBug(ProgramStateRef State, const Stmt *S,
CheckerContext &C) const {
// Generate an error node.
@@ -154,7 +160,7 @@ void DereferenceChecker::reportBug(ProgramStateRef State, const Stmt *S,
}
case Stmt::MemberExprClass: {
const MemberExpr *M = cast<MemberExpr>(S);
- if (M->isArrow() || bugreporter::isDeclRefExprToReference(M->getBase())) {
+ if (M->isArrow() || isDeclRefExprToReference(M->getBase())) {
os << "Access to field '" << M->getMemberNameInfo()
<< "' results in a dereference of a null pointer";
AddDerefSource(os, Ranges, M->getBase()->IgnoreParenCasts(),
@@ -177,7 +183,7 @@ void DereferenceChecker::reportBug(ProgramStateRef State, const Stmt *S,
auto report = llvm::make_unique<BugReport>(
*BT_null, buf.empty() ? BT_null->getDescription() : StringRef(buf), N);
- bugreporter::trackNullOrUndefValue(N, bugreporter::getDerefExpr(S), *report);
+ bugreporter::trackExpressionValue(N, bugreporter::getDerefExpr(S), *report);
for (SmallVectorImpl<SourceRange>::iterator
I = Ranges.begin(), E = Ranges.end(); I!=E; ++I)
@@ -197,8 +203,7 @@ void DereferenceChecker::checkLocation(SVal l, bool isLoad, const Stmt* S,
auto report =
llvm::make_unique<BugReport>(*BT_undef, BT_undef->getDescription(), N);
- bugreporter::trackNullOrUndefValue(N, bugreporter::getDerefExpr(S),
- *report);
+ bugreporter::trackExpressionValue(N, bugreporter::getDerefExpr(S), *report);
C.emitReport(std::move(report));
}
return;
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