[Webkit-unassigned] [Bug 66153] New: Abandoned Memory: Temporary CSS Fonts May Never Be Purged

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=66153

           Summary: Abandoned Memory: Temporary CSS Fonts May Never Be
                    Purged
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joepeck at webkit.org
                CC: mitz at webkit.org


For CSS Fonts I'm seeing a null FontPlatformData entry inside of gFontPlatformDataCache,
which can never be purged. In this case, the hash key contains the dataURI for the
CSS Font, so this can be a rather large leak depending on the size of the dataURI.

Also, mitz pointed out that the temporary FontData itself is not being "released"
after a previous change. Better to not put the "temporary" font into the cache at all.

Patch to follow.

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