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Add placeholder code in the static analyzer for MemberExprs involving struct temporaries. 

llvm-svn: 50502
This commit is contained in:
Ted Kremenek 2008-04-30 22:17:15 +00:00
parent ca67cab1e8
commit a16dacb6aa
1 changed files with 45 additions and 10 deletions
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55
clang/lib/Analysis/GRExprEngine.cpp
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@ -831,22 +831,57 @@ void GRExprEngine::VisitMemberExpr(MemberExpr* M, NodeTy* Pred,
// abstract address of the base object.
NodeSet Tmp;
if (IsPointerType(Base->getType())) // Base always is an LVal.
Visit(Base, Pred, Tmp);
else
VisitLVal(Base, Pred, Tmp);
if (asLVal) {
if (IsPointerType(Base->getType())) // Base always is an LVal.
Visit(Base, Pred, Tmp);
else
VisitLVal(Base, Pred, Tmp);
for (NodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) {
ValueState* St = GetState(*I);
RVal BaseV = GetRVal(St, Base);
RVal V = lval::FieldOffset::Make(BasicVals, GetRVal(St, Base),
M->getMemberDecl());
MakeNode(Dst, M, *I, SetRVal(St, M, V));
}
return;
}
// Evaluate the base. Can be an LVal or NonLVal (depends on whether
// or not isArrow() is true).
Visit(Base, Pred, Tmp);
for (NodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) {
ValueState* St = GetState(*I);
RVal BaseV = GetRVal(St, Base);
RVal BaseV = GetRVal(St, Base);
RVal V = lval::FieldOffset::Make(BasicVals, GetRVal(St, Base),
M->getMemberDecl());
if (IsPointerType(Base->getType())) {
assert (M->isArrow());
RVal V = lval::FieldOffset::Make(BasicVals, GetRVal(St, Base),
M->getMemberDecl());
if (asLVal)
MakeNode(Dst, M, *I, SetRVal(St, M, V));
else
EvalLoad(Dst, M, *I, St, V);
}
else {
assert (!M->isArrow());
if (BaseV.isUnknownOrUndef()) {
MakeNode(Dst, M, *I, SetRVal(St, M, BaseV));
continue;
}
// FIXME: Implement nonlval objects representing struct temporaries.
assert (isa<NonLVal>(BaseV));
MakeNode(Dst, M, *I, SetRVal(St, M, UnknownVal()));
}
}
}