REGRESSION: fast/text/international/text-spliced-font.html sometimes crashes in GlyphPageTreeNode::page()

• Component: Text
• Status: RESOLVED FIXED

[Alexey Proskuryakov]

fast/text/international/text-spliced-font.html has started to sometimes crash in late December (first recorded crash was on December 29).

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore             	0x000000010f9b2a9c WTF::RefPtr<WebCore::GlyphPage>::get() const + 12
1   com.apple.WebCore             	0x000000010f9b1dac WebCore::GlyphPageTreeNode::page() const + 28
2   com.apple.WebCore             	0x0000000110d5cf4c WebCore::SimpleFontData::platformGlyphInit() + 44
3   com.apple.WebCore             	0x0000000110d5cf02 WebCore::SimpleFontData::SimpleFontData(WebCore::FontPlatformData const&, bool, bool, bool) + 946
4   com.apple.WebCore             	0x0000000110d5d13b WebCore::SimpleFontData::SimpleFontData(WebCore::FontPlatformData const&, bool, bool, bool) + 91
5   com.apple.WebCore             	0x000000010f3b4dfe WebCore::SimpleFontData::create(WebCore::FontPlatformData const&, bool, bool, bool) + 126
6   com.apple.WebCore             	0x000000010f99a19a WebCore::FontCache::getCachedFontData(WebCore::FontPlatformData const*, WebCore::FontCache::ShouldRetain) + 394
7   com.apple.WebCore             	0x000000010f999ffd WebCore::FontCache::getCachedFontData(WebCore::FontDescription const&, WTF::AtomicString const&, bool, WebCore::FontCache::ShouldRetain) + 141
8   com.apple.WebCore             	0x000000010f5572fb WebCore::CSSFontSelector::getFontData(WebCore::FontDescription const&, WTF::AtomicString const&) + 267

[Radar WebKit Bug Importer]

<rdar://problem/19368855>

[Alexey Proskuryakov]

Created attachment 243918 [details]
full crash log

[Antti Koivisto]

GlyphPageTreeNode is gone so this exact crash can't happen anymore.

[Alexey Proskuryakov]

Yes, fast/text/international/text-spliced-font.html still fails, but no longer crashes.