Bug 1187784 (part 8) - Replace nsBaseHashtable::EnumerateRead() calls in layout/ with iterators. r=heycam. This fixes a type bug in CSSVariableDeclarations::MapRuleInfoInto(). The existing code passes aRuleData->mVariables.get(), which has type |CSSVariableDeclarations*|, into the |void*| parameter to EnumerateRead(). It then extracts that in EnumerateVariableForMapRuleInfoInto() via a cast to a different type, |nsDataHashtable<nsStringHashKey, nsString>*|. It's missing an intermediate access of CSSVariableDeclarations::mVariables. It's likely that this hasn't (seemingly) caused problems prior to now because mVariables is the only field in CSSVariableDeclarations, so mVariables->mVariables is at the same address as mVariables.

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIDOMNode;

[scriptable, uuid(FBB67442-27A3-483C-8EB2-29C3EED7514C)]
interface inIDOMView : nsISupports
{
  attribute nsIDOMNode rootNode;

  attribute boolean showAnonymousContent;
  attribute boolean showSubDocuments;
  attribute boolean showWhitespaceNodes;
  attribute boolean showAccessibleNodes;
  attribute unsigned long    whatToShow;

  nsIDOMNode getNodeFromRowIndex(in long rowIndex);
  long getRowIndexFromNode(in nsIDOMNode node);

  void rebuild();
};