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//== NullDerefChecker.h - Null dereference checker --------------*- C++ -*--==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This defines NullDerefChecker and UndefDerefChecker, two builtin checks
// in GRExprEngine that check for null and undefined pointers at loads
// and stores.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_DEREFCHECKER
#define LLVM_CLANG_DEREFCHECKER
#include "clang/Analysis/PathSensitive/Checker.h"
#include "clang/Analysis/PathSensitive/BugType.h"
namespace clang {
class ExplodedNode;
class NullDerefChecker : public Checker {
BuiltinBug *BT;
llvm::SmallVector<ExplodedNode*, 2> ImplicitNullDerefNodes;
public:
NullDerefChecker() : BT(0) {}
ExplodedNode *CheckLocation(const Stmt *S, ExplodedNode *Pred,
const GRState *state, SVal V,GRExprEngine &Eng);
static void *getTag();
typedef llvm::SmallVectorImpl<ExplodedNode*>::iterator iterator;
iterator implicit_nodes_begin() { return ImplicitNullDerefNodes.begin(); }
iterator implicit_nodes_end() { return ImplicitNullDerefNodes.end(); }
};
class UndefDerefChecker : public Checker {
BuiltinBug *BT;
public:
UndefDerefChecker() : BT(0) {}
ExplodedNode *CheckLocation(const Stmt *S, ExplodedNode *Pred,
const GRState *state, SVal V, GRExprEngine &Eng);
static void *getTag();
};
} // end clang namespace
#endif
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