void StreamChecker::OpenFileAux(CheckerContext &C, const CallExpr *CE) const {
const GRState *state = C.getState();
unsigned Count = C.getNodeBuilder().getCurrentBlockCount();
SValBuilder &svalBuilder = C.getSValBuilder();
DefinedSVal RetVal =
cast<DefinedSVal>(svalBuilder.getConjuredSymbolVal(0, CE, Count));
state = state->BindExpr(CE, RetVal);
ConstraintManager &CM = C.getConstraintManager();
// Bifurcate the state into two: one with a valid FILE* pointer, the other
// with a NULL.
const GRState *stateNotNull, *stateNull;
llvm::tie(stateNotNull, stateNull) = CM.assumeDual(state, RetVal);
if (SymbolRef Sym = RetVal.getAsSymbol()) {
// if RetVal is not NULL, set the symbol's state to Opened.
stateNotNull =
stateNotNull->set<StreamState>(Sym,StreamState::getOpened(CE));
stateNull =
stateNull->set<StreamState>(Sym, StreamState::getOpenFailed(CE));
C.addTransition(stateNotNull);
C.addTransition(stateNull);
}
}
void StreamChecker::OpenFileAux(CheckerContext &C, const CallExpr *CE) const {
ProgramStateRef state = C.getState();
SValBuilder &svalBuilder = C.getSValBuilder();
const LocationContext *LCtx = C.getPredecessor()->getLocationContext();
DefinedSVal RetVal = svalBuilder.conjureSymbolVal(nullptr, CE, LCtx,
C.blockCount())
.castAs<DefinedSVal>();
state = state->BindExpr(CE, C.getLocationContext(), RetVal);
ConstraintManager &CM = C.getConstraintManager();
// Bifurcate the state into two: one with a valid FILE* pointer, the other
// with a NULL.
ProgramStateRef stateNotNull, stateNull;
std::tie(stateNotNull, stateNull) = CM.assumeDual(state, RetVal);
if (SymbolRef Sym = RetVal.getAsSymbol()) {
// if RetVal is not NULL, set the symbol's state to Opened.
stateNotNull =
stateNotNull->set<StreamMap>(Sym,StreamState::getOpened(CE));
stateNull =
stateNull->set<StreamMap>(Sym, StreamState::getOpenFailed(CE));
C.addTransition(stateNotNull);
C.addTransition(stateNull);
}
}
