C++ (Cpp) ASTContext::getTypeAlign Beispiele

Beispiel #1

static uint64_t CalculateCookiePadding(ASTContext &Ctx, const CXXNewExpr *E) {
  if (!E->isArray())
    return 0;
  
  QualType T = E->getAllocatedType();
  
  const RecordType *RT = T->getAs<RecordType>();
  if (!RT)
    return 0;
  
  const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl());
  if (!RD)
    return 0;
  
  // Check if the class has a trivial destructor.
  if (RD->hasTrivialDestructor()) {
    // FIXME: Check for a two-argument delete.
    return 0;
  }
  
  // Padding is the maximum of sizeof(size_t) and alignof(T)
  return std::max(Ctx.getTypeSize(Ctx.getSizeType()),
                  static_cast<uint64_t>(Ctx.getTypeAlign(T))) / 8;
}