[Webkit-unassigned] [Bug 16988] New: Missing font every six page reloads of PDF image: ATSFontFindFromContainer failed: count = 2.

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=16988

           Summary: Missing font every six page reloads of PDF image:
                    ATSFontFindFromContainer failed: count = 2.
           Product: WebKit
           Version: 523.x (Safari 3)
          Platform: Macintosh
               URL: data:text/html,%3Cimg%20src=%22http://www.irs.gov/pub/ir
                    s-pdf/fw4.pdf%22%3E
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: NeedsRadar, ReviewedForRadar
          Severity: Normal
          Priority: P2
         Component: PDF
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ddkilzer at webkit.org
                CC: mitz at webkit.org


* SUMMARY
Every 6th time the URL above is loaded (a PDF image), a font is reported
"missing" and a substitute font is used.  This manifests itself a number of
ways:

- Large curly braces ("{") changing to a large dollar sign ("$")
- Bullets changing to a lowercase "c"
- Obvious font substitution on the page

* STEPS TO REPRODUCE
1. Launch Safari.
2. Open test URL: 
data:text/html,%3Cimg%20src=%22http://www.irs.gov/pub/irs-pdf/fw4.pdf%22%3E
3. Reload page at least 6 times.

* RESULTS
Every 6th page reload, a font will go missing, and a replacement font will be
used to render the page.  Console output when this occurs:

Wed Jan 23 13:51:19 hostname Safari[49430] <Error>: ATSFontFindFromContainer
failed: count = 2.

* REGRESSION
This occurs on both Safari 3.0.4 with original WebKit on Leopard, as well as a
local debug build of WebKit r29744.

Not tested on Tiger yet.


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