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Bug 865317 - Allow a useful NodePool::Enumerator to be constructed for an empty CC graph. r=smaug

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This commit is contained in:
Andrew McCreight 2013-04-25 08:42:44 -07:00
parent 6654ca9f77
commit cbcfef43dc
1 changed files with 4 additions and 1 deletions
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5
xpcom/base/nsCycleCollector.cpp
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@ -574,7 +574,10 @@ public:
return mNext++;
}
private:
Block *mFirstBlock, *mCurBlock;
// mFirstBlock is a reference to allow an Enumerator to be constructed
// for an empty graph.
Block *&mFirstBlock;
Block *mCurBlock;
// mNext is the next value we want to return, unless mNext == mBlockEnd
// NB: mLast is a reference to allow enumerating while building!
PtrInfo *mNext, *mBlockEnd, *&mLast;