[Webkit-unassigned] [Bug 22970] New: [Gtk] FontConfig leaks in FontCacheGtk

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=22970

           Summary: [Gtk] FontConfig leaks in FontCacheGtk
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: Gtk
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at pleyo.com
                CC: mbensi at pleyo.com


While looking for leaks in WebCore, we have found lots of leaks in
FontPlatformData. Here are 2 valgrind trace for 2 leaks (maybe related):

==8392== 8,384 bytes in 524 blocks are definitely lost in loss record 6,428 of
9,493
==8392==    at 0x4023D6E: malloc (vg_replace_malloc.c:207)
==8392==    by 0x63CFC3D: FcPatternCreate (in
/home/julien/MyLibs/lib/libfontconfig.so.1.3.0)
==8392==    by 0x63CD23E: FcFontRenderPrepare (in
/home/julien/MyLibs/lib/libfontconfig.so.1.3.0)
==8392==    by 0x4716249:
WebCore::FontCache::getFontDataForCharacters(WebCore::Font const&, unsigned
short const*, int) (FontCacheGtk.cpp:48)
==8392==    by 0x442ECDC: WebCore::Font::glyphDataForCharacter(int, bool, bool)
const (FontFastPath.cpp:147)
==8392==    by 0x4444E22: WebCore::WidthIterator::advance(int,
WebCore::GlyphBuffer*) (WidthIterator.cpp:112)
==8392==    by 0x442E0F9:
WebCore::Font::floatWidthForSimpleText(WebCore::TextRun const&,
WebCore::GlyphBuffer*) const (FontFastPath.cpp:303)
==8392==    by 0x441F7DF: WebCore::Font::floatWidth(WebCore::TextRun const&)
const (Font.cpp:249)
==8392==    by 0x441F827: WebCore::Font::width(WebCore::TextRun const&) const
(Font.cpp:173)
==8392==    by 0x453CFC0: WebCore::RenderText::widthFromCache(WebCore::Font
const&, int, int, int) const (RenderText.cpp:432)
==8392==    by 0x453949B: WebCore::RenderText::width(unsigned, unsigned,
WebCore::Font const&, int) const (RenderText.cpp:1056)
==8392==    by 0x455DFD9:
WebCore::RenderBlock::findNextLineBreak(WebCore::BidiResolver<WebCore::InlineIterator,
WebCore::BidiRun>&, WebCore::EClear*) (bidi.cpp:1869)
==8392==    by 0x4560D14: WebCore::RenderBlock::layoutInlineChildren(bool,
int&, int&) (bidi.cpp:947)
==8392==    by 0x44AD7FC: WebCore::RenderBlock::layoutBlock(bool)
(RenderBlock.cpp:655)
==8392==    by 0x449B4CB: WebCore::RenderBlock::layout() (RenderBlock.cpp:568)
==8392==    by 0x45003DF: WebCore::RenderListItem::layout()
(RenderListItem.cpp:232)
==8392==    by 0x44AC441: WebCore::RenderBlock::layoutBlockChildren(bool, int&)
(RenderBlock.cpp:1330)
==8392==    by 0x44AD81E: WebCore::RenderBlock::layoutBlock(bool)
(RenderBlock.cpp:657)
==8392==    by 0x449B4CB: WebCore::RenderBlock::layout() (RenderBlock.cpp:568)
==8392==    by 0x44AC441: WebCore::RenderBlock::layoutBlockChildren(bool, int&)
(RenderBlock.cpp:1330)
==8392==    by 0x44AD81E: WebCore::RenderBlock::layoutBlock(bool)
(RenderBlock.cpp:657)
==8392==    by 0x449B4CB: WebCore::RenderBlock::layout() (RenderBlock.cpp:568)
==8392==    by 0x44AC441: WebCore::RenderBlock::layoutBlockChildren(bool, int&)
(RenderBlock.cpp:1330)
==8392==    by 0x44AD81E: WebCore::RenderBlock::layoutBlock(bool)
(RenderBlock.cpp:657)
==8392==    by 0x449B4CB: WebCore::RenderBlock::layout() (RenderBlock.cpp:568)


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