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Bug 267511 - tons of assertions from bug 204784 fix.

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r+sr=bzbarsky@mit.edu
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pkw%us.ibm.com 2004-11-03 21:28:40 +00:00
parent b4ec07bd8c
commit 9ed7a10e14
1 changed files with 9 additions and 3 deletions
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12
content/html/content/src/nsHTMLFormElement.cpp
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@ -1119,10 +1119,16 @@ static PRInt32 CompareFormControlPosition(nsIFormControl *control1, nsIFormContr
{
nsCOMPtr<nsIContent> content1 = do_QueryInterface(control1);
nsCOMPtr<nsIContent> content2 = do_QueryInterface(control2);
if (content1 && content2)
return nsLayoutUtils::CompareTreePosition(content1, content2);
// This should not occur - we should be able to QI to nsIContent
NS_ASSERTION(content1 && content2, "We should be able to QI to nsIContent here!");
// We check that the parent of both content nodes is non-null here, because
// newly created form control elements may not be in the parent form
// element's DOM tree yet. This prevents an assertion in CompareTreePosition.
// See Bug 267511 for more information.
if (content1 && content2 && content1->GetParent() && content2->GetParent())
return nsLayoutUtils::CompareTreePosition(content1, content2);
return 0;
}