//
// DO NOT USE THIS CLASS DIRECTLY YOURSELF.  Use linked_ptr<T>.
class linked_ptr_internal {
 public:
  // Create a new circle that includes only this instance.
  void join_new() {
    next_ = this;
  }

  // Many linked_ptr operations may change p.link_ for some linked_ptr
  // variable p in the same circle as this object.  Therefore we need
  // to prevent two such operations from occurring concurrently.
  //

//
// DO NOT USE THIS CLASS DIRECTLY YOURSELF.  Use linked_ptr<T>.
class linked_ptr_internal {
 public:
  // Create a new circle that includes only this instance.
  void join_new() {
    next_ = this;
  }

  // Many linked_ptr operations may change p.link_ for some linked_ptr
  // variable p in the same circle as this object.  Therefore we need
  // to prevent two such operations from occurring concurrently.
  //

    <nav class="navbar navbar-expand-xs navbar-dark fixed-top bg-dark justify-content-between">
        <a class="navbar-brand" href="/">
            <span class="logo">
                <svg viewBox="0 0 300 300">
                    <circle cx="150" cy="150" r="150" stroke-width="2" />
                    <polygon points="65,240 225,240 125,270"/>
                    <polygon points="65,230 125,220 125,110"/>
                    <polygon points="135,220 225,230 135,30"/>

								<li class="nav-item" data-toggle="tooltip" data-placement="left" title="<la:message key="labels.eol_error" />">
									<a class="nav-link active" href="${eolLink}" target="_olh"><em class="fas fa-times-circle text-danger"></a>
								</li>
							</c:if>
							<c:if test="${developmentMode}">
								<li class="nav-item" data-toggle="tooltip" data-placement="left"

								<li class="nav-item" data-toggle="tooltip" data-placement="left" title="<la:message key="labels.eol_error" />">
									<a class="nav-link active" href="${eolLink}" target="_olh"><em class="fas fa-times-circle text-danger"></a>
								</li>
							</c:if>
							<c:if test="${developmentMode}">
								<li class="nav-item" data-toggle="tooltip" data-placement="left"

								<button type="submit" class="btn btn-primary ${f:h(editableClass)}" name="upgradeFrom"
									value="<la:message key="labels.upgrade_start_button"/>"
								>
									<em class="fa fa-arrow-circle-right">
									<la:message key="labels.upgrade_start_button" />
								</button>
							</div>
						</div>
					</div>
				</la:form>
			</section>
		</div>

						</div>
					</div>
					<div class="text-center">
						<la:link href="/"
							styleClass="btn btn-default">
							<em class="fa fa-arrow-circle-left">
							<la:message key="labels.profile.back" />
						</la:link>
						<button type="submit" name="changePassword"
							class="btn btn-success"
							value="<la:message key="labels.profile.update"/>">

						</div>
					</div>
					<div class="text-center">
						<la:link href="/"
							styleClass="btn btn-default">
							<em class="fa fa-arrow-circle-left">
							<la:message key="labels.profile.back" />
						</la:link>
						<button type="submit" name="changePassword"
							class="btn btn-success"
							value="<la:message key="labels.profile.update"/>">

										</div>
									</div>
								</div>
								<div class="card-footer">
									<la:link styleClass="btn btn-default" href="list/${parentId}">
										<em class="fa fa-arrow-circle-left">
										<la:message key="labels.crud_button_back" />
									</la:link>
									<c:if test="${editable}">
										<button type="submit" class="btn btn-success" name="updateTags"

}

func checkListPointers(t *testing.T, l *List, es []*Element) {
	root := &l.root

	if !checkListLen(t, l, len(es)) {
		return
	}

	// zero length lists must be the zero value or properly initialized (sentinel circle)
	if len(es) == 0 {
		if l.root.next != nil && l.root.next != root || l.root.prev != nil && l.root.prev != root {
			t.Errorf("l.root.next = %p, l.root.prev = %p; both should both be nil or %p", l.root.next, l.root.prev, root)