Navigating to www.apple.com hits assertion in WebCore::TextIteratorCopyableText::set()

[zalan]

1. Load apple.com
2. Wait a few seconds.

   1 com.apple.JavaScriptCore       0x113e9d3f7 WTFCrash + 0x27
   2 com.apple.WebCore              0x1174d62b2 WebCore::TextIteratorCopyableText::set(WTF::String&&, unsigned int, unsigned int) + 0x92 (TextIterator.cpp:292)
   3 com.apple.WebCore              0x1174d0684 WebCore::TextIterator::emitText(WebCore::Text&, WebCore::RenderText&, int, int) + 0x1e4 (TextIterator.cpp:1128)
   4 com.apple.WebCore              0x1174cf66b WebCore::TextIterator::handleTextNode() + 0xfbb (TextIterator.cpp:601)
   5 com.apple.WebCore              0x1174cd67b WebCore::TextIterator::advance() + 0x2fb (TextIterator.cpp:437)
   6 com.apple.WebCore              0x1174d44a7 WebCore::plainText(WebCore::Range const*, unsigned short, bool) + 0x107 (TextIterator.cpp:2567)
   7 com.apple.WebKit               0x110a6c985 WebKit::WebFrame::contentsAsString() const + 0x265 (WebFrame.cpp:355)
   8 com.apple.WebKit               0x110b81fc3 WebKit::WebPage::getContentsAsString(unsigned long long) + 0x33 (WebPage.cpp:2500)

[zalan]

rdar://problem/20689877

[zalan]

Created attachment 252389 [details]
Patch

[zalan]

Created attachment 252390 [details]
Patch

[Said Abou-Hallawa]

Comment on attachment 252390 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=252390&action=review

> Source/WebCore/editing/TextIterator.cpp:620
> +        }

Should not we have a loop here to collect all the prefix tabs and newlines in one emitText() instead of emitting each one in emitCharacter()?

[zalan]

Comment on attachment 252390 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=252390&action=review

>> Source/WebCore/editing/TextIterator.cpp:620
>> +        }
> 
> Should not we have a loop here to collect all the prefix tabs and newlines in one emitText() instead of emitting each one in emitCharacter()?

Whitespace is usually collapsed.

[zalan]

Comment on attachment 252390 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=252390&action=review

>>> Source/WebCore/editing/TextIterator.cpp:620
>>> +        }
>> 
>> Should not we have a loop here to collect all the prefix tabs and newlines in one emitText() instead of emitting each one in emitCharacter()?
> 
> Whitespace is usually collapsed.

Non-collapsed case is handled separately. (see TextIterator::handleTextNode -> if (!renderer.style().collapseWhiteSpace()))

[zalan]

Created attachment 252406 [details]
Patch

[Andreas Kling]

Comment on attachment 252406 [details]
Patch

r=me

[WebKit Commit Bot]

Comment on attachment 252406 [details]
Patch

Clearing flags on attachment: 252406

Committed r183835: <http://trac.webkit.org/changeset/183835>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.