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C++ ProgramStateRef::bindDefaultZero方法代码示例

本文整理汇总了C++中ProgramStateRef::bindDefaultZero方法的典型用法代码示例。如果您正苦于以下问题:C++ ProgramStateRef::bindDefaultZero方法的具体用法?C++ ProgramStateRef::bindDefaultZero怎么用?C++ ProgramStateRef::bindDefaultZero使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在ProgramStateRef的用法示例。


在下文中一共展示了ProgramStateRef::bindDefaultZero方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: VisitCXXConstructExpr


//.........这里部分代码省略.........
    if (DstPrepare.size() == 0)
      return;
    Pred = *BldrPrepare.begin();
  }

  CallEventManager &CEMgr = getStateManager().getCallEventManager();
  CallEventRef<CXXConstructorCall> Call =
    CEMgr.getCXXConstructorCall(CE, Target.getAsRegion(), State, LCtx);

  ExplodedNodeSet DstPreVisit;
  getCheckerManager().runCheckersForPreStmt(DstPreVisit, Pred, CE, *this);

  // FIXME: Is it possible and/or useful to do this before PreStmt?
  ExplodedNodeSet PreInitialized;
  {
    StmtNodeBuilder Bldr(DstPreVisit, PreInitialized, *currBldrCtx);
    for (ExplodedNodeSet::iterator I = DstPreVisit.begin(),
                                   E = DstPreVisit.end();
         I != E; ++I) {
      ProgramStateRef State = (*I)->getState();
      if (CE->requiresZeroInitialization()) {
        // FIXME: Once we properly handle constructors in new-expressions, we'll
        // need to invalidate the region before setting a default value, to make
        // sure there aren't any lingering bindings around. This probably needs
        // to happen regardless of whether or not the object is zero-initialized
        // to handle random fields of a placement-initialized object picking up
        // old bindings. We might only want to do it when we need to, though.
        // FIXME: This isn't actually correct for arrays -- we need to zero-
        // initialize the entire array, not just the first element -- but our
        // handling of arrays everywhere else is weak as well, so this shouldn't
        // actually make things worse. Placement new makes this tricky as well,
        // since it's then possible to be initializing one part of a multi-
        // dimensional array.
        State = State->bindDefaultZero(Target, LCtx);
      }

      Bldr.generateNode(CE, *I, State, /*tag=*/nullptr,
                        ProgramPoint::PreStmtKind);
    }
  }

  ExplodedNodeSet DstPreCall;
  getCheckerManager().runCheckersForPreCall(DstPreCall, PreInitialized,
                                            *Call, *this);

  ExplodedNodeSet DstEvaluated;
  StmtNodeBuilder Bldr(DstPreCall, DstEvaluated, *currBldrCtx);

  if (CE->getConstructor()->isTrivial() &&
      CE->getConstructor()->isCopyOrMoveConstructor() &&
      !CallOpts.IsArrayCtorOrDtor) {
    // FIXME: Handle other kinds of trivial constructors as well.
    for (ExplodedNodeSet::iterator I = DstPreCall.begin(), E = DstPreCall.end();
         I != E; ++I)
      performTrivialCopy(Bldr, *I, *Call);

  } else {
    for (ExplodedNodeSet::iterator I = DstPreCall.begin(), E = DstPreCall.end();
         I != E; ++I)
      defaultEvalCall(Bldr, *I, *Call, CallOpts);
  }

  // If the CFG was constructed without elements for temporary destructors
  // and the just-called constructor created a temporary object then
  // stop exploration if the temporary object has a noreturn constructor.
  // This can lose coverage because the destructor, if it were present
开发者ID:LegalizeAdulthood,项目名称:clang,代码行数:67,代码来源:ExprEngineCXX.cpp


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