bool shouldProceed(void *S, void *T) {
using namespace clang;
Sema *Sem = (Sema *)S;
DiagnosticsEngine& Diag = Sem->getDiagnostics();
cling::Transaction* Trans = (cling::Transaction*)T;
// Here we will cheat a bit and assume that the warning came from the last
// stmt, which will be in the 90% of the cases.
CompoundStmt* CS = cast<CompoundStmt>(Trans->getWrapperFD()->getBody());
// Skip the NullStmts.
SourceLocation Loc = CS->getLocStart();
for(CompoundStmt::const_reverse_body_iterator I = CS->body_rbegin(),
E = CS->body_rend(); I != E; ++I)
if (!isa<NullStmt>(*I)) {
Loc = (*I)->getLocStart();
break;
}
Diag.Report(Loc, diag::warn_null_ptr_deref);
if (isatty(fileno(stdin))) {
int input = getchar();
getchar();
if (input == 'y' || input == 'Y')
return false;
}
return true;
}
/// CheckFallThroughForFunctionDef - Check that we don't fall off the end of a
/// function that should return a value. Check that we don't fall off the end
/// of a noreturn function. We assume that functions and blocks not marked
/// noreturn will return.
static void CheckFallThroughForBody(Sema &S, const Decl *D, const Stmt *Body,
QualType BlockTy,
const CheckFallThroughDiagnostics& CD,
AnalysisContext &AC) {
bool ReturnsVoid = false;
bool HasNoReturn = false;
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
ReturnsVoid = FD->getResultType()->isVoidType();
HasNoReturn = FD->hasAttr<NoReturnAttr>() ||
FD->getType()->getAs<FunctionType>()->getNoReturnAttr();
}
else if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
ReturnsVoid = MD->getResultType()->isVoidType();
HasNoReturn = MD->hasAttr<NoReturnAttr>();
}
else if (isa<BlockDecl>(D)) {
if (const FunctionType *FT =
BlockTy->getPointeeType()->getAs<FunctionType>()) {
if (FT->getResultType()->isVoidType())
ReturnsVoid = true;
if (FT->getNoReturnAttr())
HasNoReturn = true;
}
}
Diagnostic &Diags = S.getDiagnostics();
// Short circuit for compilation speed.
if (CD.checkDiagnostics(Diags, ReturnsVoid, HasNoReturn))
return;
// FIXME: Function try block
if (const CompoundStmt *Compound = dyn_cast<CompoundStmt>(Body)) {
switch (CheckFallThrough(AC)) {
case UnknownFallThrough:
break;
case MaybeFallThrough:
if (HasNoReturn)
S.Diag(Compound->getRBracLoc(),
CD.diag_MaybeFallThrough_HasNoReturn);
else if (!ReturnsVoid)
S.Diag(Compound->getRBracLoc(),
CD.diag_MaybeFallThrough_ReturnsNonVoid);
break;
case AlwaysFallThrough:
if (HasNoReturn)
S.Diag(Compound->getRBracLoc(),
CD.diag_AlwaysFallThrough_HasNoReturn);
else if (!ReturnsVoid)
S.Diag(Compound->getRBracLoc(),
CD.diag_AlwaysFallThrough_ReturnsNonVoid);
break;
case NeverFallThroughOrReturn:
if (ReturnsVoid && !HasNoReturn && CD.diag_NeverFallThroughOrReturn)
S.Diag(Compound->getLBracLoc(),
CD.diag_NeverFallThroughOrReturn);
break;
case NeverFallThrough:
break;
}
}
}
