46794 2010-09-29 03:48:19 -0700 Crashes randomly in cairo_scaled_font_destroy 2010-10-25 13:16:35 -0700 1 1 1 Unclassified WebKit WebKitGTK 528+ (Nightly build) PC Linux RESOLVED FIXED P2 Normal --- 0 plaes webkit-unassigned bunk darin fabien.coeurjoly mrobinson xan.lopez oldest_to_newest 286786 0 plaes 2010-09-29 03:48:19 -0700 Webkit-gtk-1.3.4 on amd64 and epiphany 2.30.6 I'm getting random crashes like this: #6 cairo_scaled_font_destroy (scaled_font=0xffffffffffffffff) at cairo-scaled-font.c:1221 #7 0x00007f380820f7f5 in operator= (this=0x7f3761ee2230, other=...) at ./JavaScriptCore/wtf/PlatformRefPtr.h:114 #8 WebCore::FontPlatformData::operator= (this=0x7f3761ee2230, other=...) at WebCore/platform/graphics/cairo/FontPlatformDataFreeType.cpp:169 #9 0x00007f3807f33161 in translate (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:124 #10 add<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WTF::HashMapTranslator<std::pair<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int> >, WTF::PairHashTraits<WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >, WebCore::FontDataCacheKeyHash> > (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashTable.h:691 #11 inlineAdd (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:241 #12 WTF::HashMap<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WebCore::FontDataCacheKeyHash, WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >::set (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:248 #13 0x00007f3807f2fcd5 in WebCore::FontCache::getCachedFontData (this=<value optimized out>, platformData=0x7f37612c6600) at WebCore/platform/graphics/FontCache.cpp:282 #14 0x00007f3807bc42b2 in WebCore::fontDataForGenericFamily (document=<value optimized out>, fontDescription=..., familyName=<value optimized out>) at WebCore/css/CSSFontSelector.cpp:393 #15 0x00007f3807bc5342 in WebCore::CSSFontSelector::getFontData (this=0x7f37e656fea0, fontDescription=<value optimized out>, familyName=<value optimized out>) at WebCore/css/CSSFontSelector.cpp:466 #16 0x00007f3807f31ea5 in WebCore::FontCache::getFontData (this=0x7f37ed2c4048, font=..., familyIndex=@0x7f37e6b89e60, fontSelector=0x7f37e656fea0) at WebCore/platform/graphics/FontCache.cpp:384 #17 0x00007f3807f35d8a in WebCore::FontFallbackList::fontDataAt (this=0x7f37e6b89e00, font=<value optimized out>, realizedFontIndex=<value optimized out>) at WebCore/platform/graphics/FontFallbackList.cpp:105 #18 0x00007f3807f35ed8 in primaryFontData (this=0xffffffffffffffff, font=0x7f37612c6600) at WebCore/platform/graphics/FontFallbackList.h:66 #19 WebCore::FontFallbackList::determinePitch (this=0xffffffffffffffff, font=0x7f37612c6600) at WebCore/platform/graphics/FontFallbackList.cpp:76 #20 0x00007f380806ccf5 in isFixedPitch (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at ./WebCore/platform/graphics/FontFallbackList.h:47 #21 isFixedPitch (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at ./WebCore/platform/graphics/Font.h:251 #22 widthFromCache (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at WebCore/rendering/RenderText.cpp:540 #23 WebCore::RenderText::calcPrefWidths (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at WebCore/rendering/RenderText.cpp:793 #24 0x00007f380806de9d in WebCore::RenderText::calcPrefWidths (this=0xffffffffffffffff, leadWidth=1630299648) at WebCore/rendering/RenderText.cpp:687 #25 0x00007f380806c1da in WebCore::RenderText::trimmedPrefWidths (this=0x7f3763a10a58, leadWidth=<value optimized out>, beginMinW=@0x7fff9e4b2edc, beginWS=<value optimized out>, endMinW=<value optimized out>, endWS=<value optimized out>, hasBreakableChar=@0x7fff9e4b2eee, hasBreak=@0x7fff9e4b2eed, beginMaxW=@0x7fff9e4b2ed4, endMaxW=@0x7fff9e4b2ed0, minW=@0x7fff9e4b2ee4, maxW=@0x7fff9e4b2ee0, stripFrontSpaces=@0x7fff9e4b2eef) at WebCore/rendering/RenderText.cpp:585 #26 0x00007f3807fc5b9a in WebCore::RenderBlock::calcInlinePrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderBlock.cpp:4924 #27 0x00007f3807fc6058 in WebCore::RenderBlock::calcPrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderBlock.cpp:4606 #28 0x00007f3808054bf7 in WebCore::RenderTableCell::calcPrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderTableCell.cpp:132 #29 0x00007f3807f9d754 in WebCore::AutoTableLayout::recalcColumn (this=<value optimized out>, effCol=<value optimized out>) at WebCore/rendering/AutoTableLayout.cpp:83 #30 0x00007f3807f9de4e in WebCore::AutoTableLayout::fullRecalc (this=0x7f375fe28c30) at WebCore/rendering/AutoTableLayout.cpp:206 #31 0x00007f3807f9e9b2 in WebCore::AutoTableLayout::calcPrefWidths (this=0xffffffffffffffff, minWidth=@0x7f37612c6600, maxWidth=@0xba706d9d) at WebCore/rendering/AutoTableLayout.cpp:244 #32 0x00007f38080595bf in WebCore::RenderTable::calcPrefWidths (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:543 #33 0x00007f3807fd99c3 in WebCore::RenderBox::minPrefWidth (this=0x7f3763a106f0) at WebCore/rendering/RenderBox.cpp:539 #34 0x00007f38080572ef in WebCore::RenderTable::calcWidth (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:209 #35 0x00007f3808059adf in WebCore::RenderTable::layout (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:255 #36 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49538, child=0x7f3763a106f0, marginInfo=..., previousFloatBottom=@0x7fff9e4b334c, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 #37 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49538, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b3454) at WebCore/rendering/RenderBlock.cpp:1792 #38 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49538, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 #39 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49538) at WebCore/rendering/RenderBlock.cpp:1103 #40 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49368, child=0x7f3761d49538, marginInfo=..., previousFloatBottom=@0x7fff9e4b357c, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 #41 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49368, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b3684) at WebCore/rendering/RenderBlock.cpp:1792 #42 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49368, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 #43 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49368) at WebCore/rendering/RenderBlock.cpp:1103 #44 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49120, child=0x7f3761d49368, marginInfo=..., previousFloatBottom=@0x7fff9e4b37ac, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 #45 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49120, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b38b4) at WebCore/rendering/RenderBlock.cpp:1792 #46 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49120, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 #47 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49120) at WebCore/rendering/RenderBlock.cpp:1103 #48 0x00007f3808077d4f in WebCore::RenderView::layout (this=0x7f3761d49120) at WebCore/rendering/RenderView.cpp:124 #49 0x00007f3807ef903a in WebCore::FrameView::layout (this=0x7f376131e8c0, allowSubtree=<value optimized out>) at WebCore/page/FrameView.cpp:766 #50 0x00007f3807f836f6 in WebCore::ThreadTimers::sharedTimerFiredInternal (this=0x7f37ed350570) at WebCore/platform/ThreadTimers.cpp:112 #51 0x00007f38081f47c2 in WebCore::timeout_cb () at WebCore/platform/gtk/SharedTimerGtk.cpp:49 #52 0x00007f3804decbab in IA__g_mapped_file_new (filename=<value optimized out>, writable=<value optimized out>, error=0x1) at gmappedfile.c:227 #53 0x00007f3800000000 in ?? () #54 0x00007f38050aa748 in ?? () #55 0x00007f38050aa780 in ?? () #56 0x0000000100000001 in ?? () #57 0x0000000000b3e1d8 in ?? () #58 0x00007fff9e4b4d58 in ?? () #59 0x0000007800000000 in ?? () #60 0x000000001bc8e1ac in ?? () #61 0x0000000000be81f0 in ?? () #62 0x0000000000b03e50 in ?? () #63 0x00007f38050aae20 in ?? () #64 0x0000000000000001 in ?? () #65 0x0000000000be81fc in ?? () #66 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f37edbc2710 (LWP 11025)): #0 pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 No locals. #1 0x00007f3808809034 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f3808e32960) at JavaScriptCore/wtf/FastMalloc.cpp:2400 No locals. #2 0x00007f3808809059 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f3808e40a34) at JavaScriptCore/wtf/FastMalloc.cpp:1517 No locals. #3 0x00007f3804657c1a in start_thread (arg=<value optimized out>) at pthread_create.c:301 __res = <value optimized out> pd = 0x7f37edbc2710 unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139878188459792, 3900333059547475318, 139878568699296, 139878188460496, 139878673485824, 3, -4012954415397196426, -4012482373570908810}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <value optimized out> robust = <value optimized out> freesize = <value optimized out> __PRETTY_FUNCTION__ = "start_thread" #4 0x00007f38043bca9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 No locals. Thread 2 (Thread 0x7f37ed2c1710 (LWP 11026)): #0 pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 No locals. #1 0x00007f3807e92c85 in WebCore::IconDatabase::syncThreadMainLoop (this=0x7f37ed2ca800) at WebCore/loader/icon/IconDatabase.cpp:1420 didAnyWork = false shouldReenableSuddenTermination = true #2 0x00007f3807e92d96 in WebCore::IconDatabase::iconDatabaseSyncThread (this=0x7f37ed2ca800) at WebCore/loader/icon/IconDatabase.cpp:1044 journalFilename = {m_impl = {<WTF::FastAllocBase> = {<No data fields>}, m_ptr = 0x7f37ed2d8f20}} #3 0x00007f3804657c1a in start_thread (arg=<value optimized out>) at pthread_create.c:301 __res = <value optimized out> pd = 0x7f37ed2c1710 unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139878179018512, 3900333059547475318, 139878568699296, 139878179019216, 139878673485824, 3, -4012955651810906762, -4012482373570908810}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <value optimized out> robust = <value optimized out> freesize = <value optimized out> __PRETTY_FUNCTION__ = "start_thread" #4 0x00007f38043bca9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 No locals. Thread 1 (Thread 0x7f380a9ff8c0 (LWP 11024)): #0 0x00007f380465ffdd in __libc_waitpid (pid=20157, stat_loc=<value optimized out>, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:41 _a3 = 0 _a1 = 20157 resultvar = <value optimized out> _a4 = 0 _a2 = 140735849111520 oldtype = 0 result = <value optimized out> #1 0x00007f3804e32751 in compile_branch (options=<value optimized out>, oldims=<value optimized out>, codeptr=<value optimized out>, ptrptr=<value optimized out>, errorcodeptr=<value optimized out>, lookbehind=<value optimized out>, reset_bracount=149090296, skipbytes=<value optimized out>, firstbyteptr=0x0, reqbyteptr=0x0, bcptr=0x0, cd=0x0, lengthptr=0x0) at /usr/include/bits/string3.h:52 prop_type = <value optimized out> prop_value = 0 recno = <value optimized out> subfirstbyte = 59848768 mclength = <value optimized out> class_charcount = <value optimized out> possessive_quantifier = 0 is_quantifier = 0 is_recurse = <value optimized out> reset_bracount = <value optimized out> subreqbyte = 0 mcbuffer = "@\000\000\000\000\000\000" negate_class = <value optimized out> should_flip_negation = 0 class_lastchar = <value optimized out> refsign = <value optimized out> skipbytes = <value optimized out> terminator = <value optimized out> repeat_max = <value optimized out> greedy_non_default = 69219624 save_hwm = <value optimized out> repeat_type = <value optimized out> code = 0x1 <Address 0x1 out of bounds> tempcode = 0x1c001d0040000a <Address 0x1c001d0040000a out of bounds> inescq = <value optimized out> ptr = 0x38004000000000 <Address 0x38004000000000 out of bounds> tempptr = <value optimized out> classbits = "\001", '\000' <repeats 15 times>, "\177ELF\002\001\001\000\000\000\000\000\000\000\000" after_manual_callout = <value optimized out> c = <value optimized out> op_type = <value optimized out> length_prevgroup = 0 utf8_char = "\020\065 \004\000" bravalue = -1639243796 groupsetfirstbyte = 2105977 class_utf8 = 69219624 req_caseopt = 32767 utf8 = 0 class_utf8data = <value optimized out> reqvary = 0 tempreqvary = 69219624 #2 compile_regex (options=<value optimized out>, oldims=<value optimized out>, codeptr=<value optimized out>, ptrptr=<value optimized out>, errorcodeptr=<value optimized out>, lookbehind=<value optimized out>, reset_bracount=149090296, skipbytes=<value optimized out>, firstbyteptr=0x0, reqbyteptr=0x0, bcptr=0x0, cd=0x0, lengthptr=0x0) at pcre_compile.c:5401 ptr = <value optimized out> code = 0x7fff9e4b1fe0 "" last_branch = <value optimized out> reverse_count = 0x0 firstbyte = 0 reqbyte = 0 branchreqbyte = <value optimized out> length = 0 max_bracount = 32767 bc = {outer = 0x1003e0002, current = 0x434a20 "1\355I\211\321^H\211\342H\203\344\360PTI\307\300\200\225J"} #3 0x00007f3808e2efe8 in guard variable for WebCore::FontPlatformDataCacheKeyTraits::emptyValue()::key () from /usr/lib64/libwebkitgtk-1.0.so.0 No symbol table info available. #4 0x00007f3808e2eff8 in WebCore::FontPlatformDataCacheKeyTraits::emptyValue()::key () from /usr/lib64/libwebkitgtk-1.0.so.0 No symbol table info available. #5 <signal handler called> No symbol table info available. #6 cairo_scaled_font_destroy (scaled_font=0xffffffffffffffff) at cairo-scaled-font.c:1221 lru = <value optimized out> font_map = <value optimized out> __PRETTY_FUNCTION__ = "cairo_scaled_font_destroy" #7 0x00007f380820f7f5 in operator= (this=0x7f3761ee2230, other=...) at ./JavaScriptCore/wtf/PlatformRefPtr.h:114 optr = 0x3bba300 ptr = 0xffffffffffffffff #8 WebCore::FontPlatformData::operator= (this=0x7f3761ee2230, other=...) at WebCore/platform/graphics/cairo/FontPlatformDataFreeType.cpp:169 No locals. #9 0x00007f3807f33161 in translate (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:124 No locals. #10 add<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WTF::HashMapTranslator<std::pair<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int> >, WTF::PairHashTraits<WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >, WebCore::FontDataCacheKeyHash> > (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashTable.h:691 k = 0 i = <value optimized out> sizeMask = 511 h = <value optimized out> #11 inlineAdd (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:241 No locals. #12 WTF::HashMap<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WebCore::FontDataCacheKeyHash, WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >::set (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:248 result = {first = {m_impl = {m_iterator = {m_position = 0xb97d5b1be, m_endPosition = 0x6}}}, second = 160} #13 0x00007f3807f2fcd5 in WebCore::FontCache::getCachedFontData (this=<value optimized out>, platformData=0x7f37612c6600) at WebCore/platform/graphics/FontCache.cpp:282 newValue = {first = 0x7f375faa7000, second = 1} #14 0x00007f3807bc42b2 in WebCore::fontDataForGenericFamily (document=<value optimized out>, fontDescription=..., familyName=<value optimized out>) at WebCore/css/CSSFontSelector.cpp:393 settings = 0x7f375ff3b300 genericFamily = {m_string = {m_impl = {<WTF::FastAllocBase> = {<No data fields>}, m_ptr = 0x7f37ed350510}}} #15 0x00007f3807bc5342 in WebCore::CSSFontSelector::getFontData (this=0x7f37e656fea0, fontDescription=<value optimized out>, familyName=<value optimized out>) at WebCore/css/CSSFontSelector.cpp:466 family = {m_impl = {<WTF::FastAllocBase> = {<No data fields>}, m_ptr = 0x0}} familyFontFaces = <value optimized out> segmentedFontFaceCache = <value optimized out> traitsMask = <value optimized out> face = {<WTF::FastAllocBase> = {<No data fields>}, m_ptr = 0x0} #16 0x00007f3807f31ea5 in WebCore::FontCache::getFontData (this=0x7f37ed2c4048, font=..., familyIndex=@0x7f37e6b89e60, fontSelector=0x7f37e656fea0) at WebCore/platform/graphics/FontCache.cpp:384 data = <value optimized out> result = <value optimized out> startIndex = 0 startFamily = 0x7f37615106f0 currFamily = 0x7f37615106f0 #17 0x00007f3807f35d8a in WebCore::FontFallbackList::fontDataAt (this=0x7f37e6b89e00, font=<value optimized out>, realizedFontIndex=<value optimized out>) at WebCore/platform/graphics/FontFallbackList.cpp:105 No locals. #18 0x00007f3807f35ed8 in primaryFontData (this=0xffffffffffffffff, font=0x7f37612c6600) at WebCore/platform/graphics/FontFallbackList.h:66 No locals. #19 WebCore::FontFallbackList::determinePitch (this=0xffffffffffffffff, font=0x7f37612c6600) at WebCore/platform/graphics/FontFallbackList.cpp:76 fontData = <value optimized out> #20 0x00007f380806ccf5 in isFixedPitch (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at ./WebCore/platform/graphics/FontFallbackList.h:47 No locals. #21 isFixedPitch (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at ./WebCore/platform/graphics/Font.h:251 No locals. #22 widthFromCache (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at WebCore/rendering/RenderText.cpp:540 No locals. #23 WebCore::RenderText::calcPrefWidths (this=0x7f3763a10a58, leadWidth=<value optimized out>, fallbackFonts=<value optimized out>, glyphOverflow=<value optimized out>) at WebCore/rendering/RenderText.cpp:793 w = <value optimized out> isSpace = <value optimized out> isCollapsibleWhiteSpace = <value optimized out> c = 32 wordLen = 8 isNewline = false hasBreak = false betweenWords = true j = 8 i = 0 currMaxWidth = 0 wordSpacing = 0 len = <value optimized out> needsWordSpacing = false ignoringSpaces = <value optimized out> f = @0x7f37615106f0 firstWord = true nextBreakable = 8 firstGlyphLeftOverflow = -1 lastWordBoundary = <value optimized out> breakAll = false txt = 0x7f3763393920 isSpace = false firstLine = true breakNBSP = <value optimized out> #24 0x00007f380806de9d in WebCore::RenderText::calcPrefWidths (this=0xffffffffffffffff, leadWidth=1630299648) at WebCore/rendering/RenderText.cpp:687 fallbackFonts = {<WTF::FastAllocBase> = {<No data fields>}, m_impl = {static m_minTableSize = <optimized out>, static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}} glyphOverflow = {left = 0, right = 0, top = 0, bottom = 0} #25 0x00007f380806c1da in WebCore::RenderText::trimmedPrefWidths (this=0x7f3763a10a58, leadWidth=<value optimized out>, beginMinW=@0x7fff9e4b2edc, beginWS=<value optimized out>, endMinW=<value optimized out>, endWS=<value optimized out>, hasBreakableChar=@0x7fff9e4b2eee, hasBreak=@0x7fff9e4b2eed, beginMaxW=@0x7fff9e4b2ed4, endMaxW=@0x7fff9e4b2ed0, minW=@0x7fff9e4b2ee4, maxW=@0x7fff9e4b2ee0, stripFrontSpaces=@0x7fff9e4b2eef) at WebCore/rendering/RenderText.cpp:585 collapseWhiteSpace = <value optimized out> len = <value optimized out> text = <value optimized out> #26 0x00007f3807fc5b9a in WebCore::RenderBlock::calcInlinePrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderBlock.cpp:4924 hasBreakableChar = false beginWS = 55 beginMax = 0 endMax = 0 hasBreak = 127 beginMin = 0 endMin = 1008 endWS = 161 ti = <value optimized out> cstyle = <value optimized out> childMin = 0 childMax = 0 child = 0x7f3763a10a58 trailingSpaceChild = 0x0 allowImagesToBreak = true autoWrap = true inlineMax = 0 addedTextIndent = false prevFloat = 0x0 inlineMin = 0 cw = 1008 stripFrontSpaces = true oldAutoWrap = true childIterator = {parent = 0x7f3763a10820, current = 0x7f3763a10a58, endOfInline = false} #27 0x00007f3807fc6058 in WebCore::RenderBlock::calcPrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderBlock.cpp:4606 toAdd = <value optimized out> #28 0x00007f3808054bf7 in WebCore::RenderTableCell::calcPrefWidths (this=0x7f3763a10820) at WebCore/rendering/RenderTableCell.cpp:132 No locals. #29 0x00007f3807f9d754 in WebCore::AutoTableLayout::recalcColumn (this=<value optimized out>, effCol=<value optimized out>) at WebCore/rendering/AutoTableLayout.cpp:83 w = <value optimized out> current = {cells = {<WTF::FastAllocBase> = {<No data fields>}, m_size = 1, m_buffer = {<WTF::VectorBufferBase<WebCore::RenderTableCell*>> = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = {<No data fields>}, <No data fields>}, m_buffer = 0x7fff9e4b2fd8, m_capacity = 1}, static m_inlineBufferSize = 8, m_inlineBuffer = {buffer = " \b\241c7\177\000"}}}, inColSpan = false} cell = 0x7f3763a10820 cellHasContent = <value optimized out> i = 0 numRows = 1 l = @0x7f375fe28c58 child = 0x7f3763a108f8 fixedContributor = 0x0 maxContributor = 0x0 #30 0x00007f3807f9de4e in WebCore::AutoTableLayout::fullRecalc (this=0x7f375fe28c30) at WebCore/rendering/AutoTableLayout.cpp:206 i = 1 nEffCols = 1 child = <value optimized out> cCol = 0 #31 0x00007f3807f9e9b2 in WebCore::AutoTableLayout::calcPrefWidths (this=0xffffffffffffffff, minWidth=@0x7f37612c6600, maxWidth=@0xba706d9d) at WebCore/rendering/AutoTableLayout.cpp:244 spanMaxWidth = <value optimized out> maxPercent = <value optimized out> maxNonPercent = <value optimized out> scaleColumns = true remainingPercent = <value optimized out> bs = <value optimized out> #32 0x00007f38080595bf in WebCore::RenderTable::calcPrefWidths (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:543 No locals. #33 0x00007f3807fd99c3 in WebCore::RenderBox::minPrefWidth (this=0x7f3763a106f0) at WebCore/rendering/RenderBox.cpp:539 No locals. #34 0x00007f38080572ef in WebCore::RenderTable::calcWidth (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:209 cb = <value optimized out> availableWidth = 1008 #35 0x00007f3808059adf in WebCore::RenderTable::layout (this=0x7f3763a106f0) at WebCore/rendering/RenderTable.cpp:255 th = <value optimized out> section = <value optimized out> calculatedHeight = 1 bpBottom = 86843095 rightBorderOverflow = <value optimized out> leftBorderOverflow = <value optimized out> bottomBorderOverflow = <value optimized out> didFullRepaint = <value optimized out> collapsing = <value optimized out> sectionMoved = <value optimized out> movedSectionTop = <value optimized out> bpTop = <value optimized out> bl = <value optimized out> topBorderOverflow = <value optimized out> repainter = {m_object = @0x7f3763a106f0, m_repaintContainer = 0x0, m_oldBounds = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_oldOutlineBox = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_checkForRepaint = false} oldWidth = 0 h = {<WTF::FastAllocBase> = {<No data fields>}, m_value = -1639238848} #36 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49538, child=0x7f3763a106f0, marginInfo=..., previousFloatBottom=@0x7fff9e4b334c, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 oldRect = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}} childRenderBlock = 0x7f3763a106f0 paginated = false oldTopPosMargin = 8 oldTopNegMargin = 0 yPosEstimate = 96 markDescendantsWithFloats = <value optimized out> yBeforeClear = 0 yAfterClear = <value optimized out> childHadLayout = false childNeededLayout = true atTopOfBlock = <value optimized out> #37 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49538, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b3454) at WebCore/rendering/RenderBlock.cpp:1792 top = 0 marginInfo = {m_canCollapseWithChildren = true, m_canCollapseTopWithChildren = true, m_canCollapseBottomWithChildren = true, m_quirkContainer = true, m_atTopOfBlock = false, m_atBottomOfBlock = false, m_topQuirk = false, m_bottomQuirk = false, m_determinedTopQuirk = false, m_posMargin = 1, m_negMargin = 0} bottom = 0 legend = 0x0 previousFloatBottom = 0 next = 0x7f3763a106f0 #38 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49538, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 oldWidth = <value optimized out> previousHeight = 0 hasSpecifiedPageHeight = <value optimized out> colInfo = 0x0 repaintTop = 0 statePusher = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = {<No data fields>}, <No data fields>}, m_view = 0x7f3761d49120, m_disabled = false, m_didStart = true, m_didEnd = false, m_didCreateLayoutState = false} isCell = <value optimized out> repaintBottom = 0 maxFloatBottom = 0 oldHeight = <value optimized out> didFullRepaint = <value optimized out> repainter = {m_object = @0x7f3761d49538, m_repaintContainer = 0x0, m_oldBounds = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_oldOutlineBox = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_checkForRepaint = false} oldColumnWidth = <value optimized out> toAdd = <value optimized out> #39 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49538) at WebCore/rendering/RenderBlock.cpp:1103 No locals. #40 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49368, child=0x7f3761d49538, marginInfo=..., previousFloatBottom=@0x7fff9e4b357c, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 oldRect = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}} childRenderBlock = 0x7f3761d49538 paginated = false oldTopPosMargin = 0 oldTopNegMargin = 0 yPosEstimate = 8 markDescendantsWithFloats = <value optimized out> yBeforeClear = 32568 yAfterClear = <value optimized out> childHadLayout = false childNeededLayout = false atTopOfBlock = <value optimized out> #41 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49368, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b3684) at WebCore/rendering/RenderBlock.cpp:1792 top = 0 marginInfo = {m_canCollapseWithChildren = false, m_canCollapseTopWithChildren = false, m_canCollapseBottomWithChildren = false, m_quirkContainer = false, m_atTopOfBlock = true, m_atBottomOfBlock = false, m_topQuirk = false, m_bottomQuirk = false, m_determinedTopQuirk = false, m_posMargin = 0, m_negMargin = 0} bottom = 0 legend = 0x0 previousFloatBottom = 0 next = 0x7f3761d49538 #42 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49368, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 oldWidth = <value optimized out> previousHeight = 0 hasSpecifiedPageHeight = <value optimized out> colInfo = 0x0 repaintTop = 0 statePusher = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = {<No data fields>}, <No data fields>}, m_view = 0x7f3761d49120, m_disabled = false, m_didStart = true, m_didEnd = false, m_didCreateLayoutState = false} isCell = <value optimized out> repaintBottom = 0 maxFloatBottom = 0 oldHeight = <value optimized out> didFullRepaint = <value optimized out> repainter = {m_object = @0x7f3761d49368, m_repaintContainer = 0x0, m_oldBounds = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_oldOutlineBox = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_checkForRepaint = false} oldColumnWidth = <value optimized out> toAdd = <value optimized out> #43 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49368) at WebCore/rendering/RenderBlock.cpp:1103 No locals. #44 0x00007f3807fc7116 in WebCore::RenderBlock::layoutBlockChild (this=0x7f3761d49120, child=0x7f3761d49368, marginInfo=..., previousFloatBottom=@0x7fff9e4b37ac, maxFloatBottom=<value optimized out>) at WebCore/rendering/RenderBlock.cpp:1853 oldRect = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}} childRenderBlock = 0x7f3761d49368 paginated = false oldTopPosMargin = 0 oldTopNegMargin = 0 yPosEstimate = 0 markDescendantsWithFloats = <value optimized out> yBeforeClear = 0 yAfterClear = <value optimized out> childHadLayout = false childNeededLayout = false atTopOfBlock = <value optimized out> #45 0x00007f3807fc8e1e in WebCore::RenderBlock::layoutBlockChildren (this=0x7f3761d49120, relayoutChildren=<value optimized out>, maxFloatBottom=@0x7fff9e4b38b4) at WebCore/rendering/RenderBlock.cpp:1792 top = 0 marginInfo = {m_canCollapseWithChildren = false, m_canCollapseTopWithChildren = false, m_canCollapseBottomWithChildren = false, m_quirkContainer = false, m_atTopOfBlock = true, m_atBottomOfBlock = false, m_topQuirk = false, m_bottomQuirk = false, m_determinedTopQuirk = false, m_posMargin = 0, m_negMargin = 0} bottom = 0 legend = 0x0 previousFloatBottom = 0 next = 0x7f3761d49368 #46 0x00007f3807fc9674 in WebCore::RenderBlock::layoutBlock (this=0x7f3761d49120, relayoutChildren=true, pageHeight=0) at WebCore/rendering/RenderBlock.cpp:1206 oldWidth = <value optimized out> previousHeight = 0 hasSpecifiedPageHeight = <value optimized out> colInfo = 0x0 repaintTop = 0 statePusher = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = {<No data fields>}, <No data fields>}, m_view = 0x7f3761d49120, m_disabled = false, m_didStart = true, m_didEnd = false, m_didCreateLayoutState = false} isCell = <value optimized out> repaintBottom = 0 maxFloatBottom = 0 oldHeight = <value optimized out> didFullRepaint = <value optimized out> repainter = {m_object = @0x7f3761d49120, m_repaintContainer = 0x0, m_oldBounds = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_oldOutlineBox = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_checkForRepaint = false} oldColumnWidth = <value optimized out> toAdd = <value optimized out> #47 0x00007f3807fb502d in WebCore::RenderBlock::layout (this=0x7f3761d49120) at WebCore/rendering/RenderBlock.cpp:1103 No locals. #48 0x00007f3808077d4f in WebCore::RenderView::layout (this=0x7f3761d49120) at WebCore/rendering/RenderView.cpp:124 state = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = {<No data fields>}, <No data fields>}, m_clipped = false, m_clipRect = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 0, m_height = 0}}, m_paintOffset = {m_width = 0, m_height = 0}, m_layoutOffset = {m_width = 0, m_height = 0}, m_layoutDelta = {m_width = 0, m_height = -104}, m_pageHeight = 0, m_pageOffset = {m_width = 0, m_height = 0}, m_columnInfo = 0x0, m_next = 0x0} #49 0x00007f3807ef903a in WebCore::FrameView::layout (this=0x7f376131e8c0, allowSubtree=<value optimized out>) at WebCore/page/FrameView.cpp:766 root = 0x7f3761d49120 hMode = WebCore::ScrollbarAuto vMode = WebCore::ScrollbarAuto layer = 0x7f3761d49258 document = 0x7f3763bda000 subtree = false disableLayoutState = false cachedOffset = {m_x = -315292304, m_y = 32567} #50 0x00007f3807f836f6 in WebCore::ThreadTimers::sharedTimerFiredInternal (this=0x7f37ed350570) at WebCore/platform/ThreadTimers.cpp:112 interval = <value optimized out> fireTime = 1285756939.530076 timeToQuit = 1285756939.580076 #51 0x00007f38081f47c2 in WebCore::timeout_cb () at WebCore/platform/gtk/SharedTimerGtk.cpp:49 No locals. #52 0x00007f3804decbab in IA__g_mapped_file_new (filename=<value optimized out>, writable=<value optimized out>, error=0x1) at gmappedfile.c:227 save_errno = 32568 file = <value optimized out> fd = 11965264 st = {st_dev = 11788752, st_ino = 67738592, st_nlink = 0, st_mode = 81707985, st_uid = 32568, st_gid = 120, __pad0 = 0, st_rdev = 11553856, st_size = 139878576606096, st_blksize = 67760832, st_blocks = 140735849118448, st_atim = {tv_sec = 11788760, tv_nsec = 140735849118472}, st_mtim = {tv_sec = 140735849118464, tv_nsec = 67738592}, st_ctim = {tv_sec = 0, tv_nsec = 139878631163824}, __unused = {0, 0, 11788752}} __PRETTY_FUNCTION__ = "\377\377\377L\215%\202\224\004\000\211D$\ff\220\017\266\302\200\372r" #53 0x00007f3800000000 in ?? () No symbol table info available. #54 0x00007f38050aa748 in ?? () No symbol table info available. #55 0x00007f38050aa780 in ?? () No symbol table info available. #56 0x0000000100000001 in ?? () 291070 1 70101 mrobinson 2010-10-07 09:55:04 -0700 Created attachment 70101 Potential crash fix Looks like some of the HashTraits machinery is missing for PlatformRefPtr. Do you think you can try this patch and see if it improves things? 292270 2 plaes 2010-10-10 02:55:39 -0700 (In reply to comment #1) > Looks like some of the HashTraits machinery is missing for PlatformRefPtr. Do you think you can try this patch and see if it improves things? It seems that something is still missing, as it crashed with the patch: #7 cairo_scaled_font_destroy (scaled_font=0xffffffffffffffff) at cairo-scaled-font.c:1221 #8 0x00007f689a7377f5 in operator= (this=0x7f67effa9bc0, other=...) at ./JavaScriptCore/wtf/PlatformRefPtr.h:115 #9 WebCore::FontPlatformData::operator= (this=0x7f67effa9bc0, other=...) at WebCore/platform/graphics/cairo/FontPlatformDataFreeType.cpp:169 #10 0x00007f689a45b161 in translate (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:124 #11 add<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WTF::HashMapTranslator<std::pair<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int> >, WTF::PairHashTraits<WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >, WebCore::FontDataCacheKeyHash> > (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashTable.h:691 #12 inlineAdd (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:241 #13 WTF::HashMap<WebCore::FontPlatformData, std::pair<WebCore::SimpleFontData*, unsigned int>, WebCore::FontDataCacheKeyHash, WebCore::FontDataCacheKeyTraits, WTF::HashTraits<std::pair<WebCore::SimpleFontData*, unsigned int> > >::set (this=<value optimized out>, key=<value optimized out>, mapped=<value optimized out>) at ./JavaScriptCore/wtf/HashMap.h:248 #14 0x00007f689a457cd5 in WebCore::FontCache::getCachedFontData (this=<value optimized out>, platformData=0x7f67f5443680) at WebCore/platform/graphics/FontCache.cpp:282 #15 0x00007f689a459eba in WebCore::FontCache::getFontData (this=0x7f689cdec048, font=..., familyIndex=@0x7f67ee92fd80, fontSelector=0x7f67e9c6b840) at WebCore/platform/graphics/FontCache.cpp:388 #16 0x00007f689a45dd8a in WebCore::FontFallbackList::fontDataAt (this=0x7f67ee92fd20, font=<value optimized out>, realizedFontIndex=<value optimized out>) at WebCore/platform/graphics/FontFallbackList.cpp:105 #17 0x00007f689a45ded8 in primaryFontData (this=0xffffffffffffffff, font=0x7f67f5443680) at WebCore/platform/graphics/FontFallbackList.h:66 #18 WebCore::FontFallbackList::determinePitch (this=0xffffffffffffffff, font=0x7f67f5443680) at WebCore/platform/graphics/FontFallbackList.cpp:76 #19 0x00007f689a4fba55 in isFixedPitch (this=<value optimized out>, resolver=<value optimized out>, firstLine=<value optimized out>, isLineEmpty=<value optimized out>, previousLineBrokeCleanly=<value optimized out>, hyphenated=@0x7fff6621b0c9, clear=0x7fff6621b0b4, lastFloatFromPreviousLine=0x0) at ./WebCore/platform/graphics/FontFallbackList.h:47 #20 isFixedPitch (this=<value optimized out>, resolver=<value optimized out>, firstLine=<value optimized out>, isLineEmpty=<value optimized out>, previousLineBrokeCleanly=<value optimized out>, hyphenated=@0x7fff6621b0c9, clear=0x7fff6621b0b4, lastFloatFromPreviousLine=0x0) at ./WebCore/platform/graphics/Font.h:251 #21 WebCore::RenderBlock::findNextLineBreak (this=<value optimized out>, resolver=<value optimized out>, firstLine=<value optimized out>, isLineEmpty=<value optimized out>, previousLineBrokeCleanly=<value optimized out>, hyphenated=@0x7fff6621b0c9, clear=0x7fff6621b0b4, lastFloatFromPreviousLine=0x0) at WebCore/rendering/RenderBlockLineLayout.cpp:1639 #22 0x00007f689a4fce5f in WebCore::RenderBlock::layoutInlineChildren (this=0x7f67f127f878, relayoutChildren=<value optimized out>, repaintTop=@0x7fff6621b1dc, repaintBottom=@0x7fff6621b1d8) at WebCore/rendering/RenderBlockLineLayout.cpp:684 295247 3 fabien.coeurjoly 2010-10-17 11:42:42 -0700 I also have users experiencing the same (very random) issue in WebKit for MorphOS on PowerPC architecture. 295780 4 71089 mrobinson 2010-10-18 15:04:05 -0700 Created attachment 71089 Potential crash fix 2 296225 5 plaes 2010-10-19 09:09:47 -0700 (In reply to comment #4) > Created an attachment (id=71089) [details] > Potential crash fix 2 It seems that this change fixes the crash. 297448 6 71445 mrobinson 2010-10-21 08:51:14 -0700 Created attachment 71445 Patch for this issue 298289 7 71445 xan.lopez 2010-10-22 17:59:22 -0700 Comment on attachment 71445 Patch for this issue Curious, why does nobody else seem to need to do this? 298293 8 mrobinson 2010-10-22 18:19:48 -0700 There's a similar check that happens in WebCore/platform/graphics/win/RefCountedGDIHandle.h. 298296 9 71445 xan.lopez 2010-10-22 18:28:22 -0700 Comment on attachment 71445 Patch for this issue So, after talking on jabber we both find it strange that we have to take care of this manually, and it might just be a symptom for some other bug. Hopefully PlatformRefPtr is going away entirely soon anyway, so let's just go ahead and commit it. 298395 10 71445 mrobinson 2010-10-23 08:08:58 -0700 Comment on attachment 71445 Patch for this issue Clearing flags on attachment: 71445 Committed r70390: <http://trac.webkit.org/changeset/70390> 298397 11 mrobinson 2010-10-23 08:09:03 -0700 All reviewed patches have been landed. Closing bug. 298991 12 darin 2010-10-25 11:34:50 -0700 I think this is the wrong fix. The right way to do this is with hash traits, I think. This is not how RefPtr handles hash table deleted values. It's not a good idea to handle this differently for this RefPtr variant. 299007 13 mrobinson 2010-10-25 11:54:18 -0700 (In reply to comment #12) > I think this is the wrong fix. The right way to do this is with hash traits, I think. This is not how RefPtr handles hash table deleted values. It's not a good idea to handle this differently for this RefPtr variant. I did attempt the HashTraits approach at first, but this did not fix the issue (my first patch on this bug). I think the trouble is that the RefPtr isn't the type contained in the HashMap, it is the containing type FontPlatformData. This is handled as a one-off by the Windows port. See win/RefCountedGDIHandle.h. Perhaps in this case, it just makes sense to manage memory manually and deal with the -1 inside FontPlatformDataFreetype. I'll post a patch. 299053 14 darin 2010-10-25 13:02:44 -0700 (In reply to comment #13) > I did attempt the HashTraits approach at first, but this did not fix the issue (my first patch on this bug). I think the trouble is that the RefPtr isn't the type contained in the HashMap, it is the containing type FontPlatformData. This is handled as a one-off by the Windows port. See win/RefCountedGDIHandle.h. Perhaps in this case, it just makes sense to manage memory manually and deal with the -1 inside FontPlatformDataFreetype. I'll post a patch. This might be solved by changing FontPlatformDataFreetype to have different hash traits. 299058 15 71786 mrobinson 2010-10-25 13:05:39 -0700 Created attachment 71786 WIP patch taking Darin's advice into account Darin, I've attached a patch for this issue which switches FontPlatformData.m_scaledFont to manual memory management and handles HashTableDeletedValue specifically. Some alternatives: 1. Create a RefCountedCairoPtr (similar to RefCountedGDIHandle on Windows), which essentially wraps the raw Cairo pointer in another layer of abstraction. 2. Handle -1 specifically in RefPtrCairo here: https://bugs.webkit.org/show_bug.cgi?id=48192 I hope my previous comment did not come off as too defensive. I appreciate your insight. 299073 16 darin 2010-10-25 13:16:35 -0700 Another option is to use a different value for the deleted value of FontPlatformData. There’s no reason it has to be the magic value -1. It could be some other kind of distinctive value. As with the empty value it simple needs to be a value that does not need to be used as a hash table key. 70101 2010-10-07 09:55:04 -0700 2010-10-18 15:04:02 -0700 Potential crash fix potential-crash-fix.diff text/plain 1685 mrobinson ZGlmZiAtLWdpdCBhL0phdmFTY3JpcHRDb3JlL3d0Zi9QbGF0Zm9ybVJlZlB0ci5oIGIvSmF2YVNj cmlwdENvcmUvd3RmL1BsYXRmb3JtUmVmUHRyLmgKaW5kZXggOGFjMTZjYi4uNTNkZDBiNyAxMDA2 NDQKLS0tIGEvSmF2YVNjcmlwdENvcmUvd3RmL1BsYXRmb3JtUmVmUHRyLmgKKysrIGIvSmF2YVNj cmlwdENvcmUvd3RmL1BsYXRmb3JtUmVmUHRyLmgKQEAgLTIzLDggKzIzLDkgQEAKICNpZm5kZWYg UGxhdGZvcm1SZWZQdHJfaAogI2RlZmluZSBQbGF0Zm9ybVJlZlB0cl9oCiAKKyNpbmNsdWRlICJI YXNoVHJhaXRzLmgiCisjaW5jbHVkZSAiVHlwZVRyYWl0cy5oIgogI2luY2x1ZGUgIkFsd2F5c0lu bGluZS5oIgotI2luY2x1ZGUgIlJlZlB0ci5oIgogI2luY2x1ZGUgPGFsZ29yaXRobT4KIAogbmFt ZXNwYWNlIFdURiB7CkBAIC0xNjYsNiArMTY3LDIzIEBAIHRlbXBsYXRlIDx0eXBlbmFtZSBULCB0 eXBlbmFtZSBVPiBpbmxpbmUgYm9vbCBvcGVyYXRvciE9KFQqIGEsIGNvbnN0IFBsYXRmb3JtUmVm 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