[Webkit-unassigned] [Bug 239272] The first frame of an animation GIF is sometimes skipped on GTKWebKit and WinCairo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239272

--- Comment #3 from Fujii Hironori <Hironori.Fujii at sony.com> ---
Created attachment 457679

  --> https://bugs.webkit.org/attachment.cgi?id=457679&action=review

logging patch

Good catch. Thank you for the bug report.

frameDurationAtIndex returns 0 seconds at the first time.
This seems GIFImageDecoder's problem.

frameDurationAtIndex(0) = 0.000000
frameDurationAtIndex(1) = 0.000000
frameDurationAtIndex(2) = 1.000000
frameDurationAtIndex(3) = 1.000000
frameDurationAtIndex(4) = 1.000000
frameDurationAtIndex(5) = 1.000000
frameDurationAtIndex(6) = 1.000000
frameDurationAtIndex(7) = 1.000000
frameDurationAtIndex(0) = 1.000000
frameDurationAtIndex(1) = 1.000000
frameDurationAtIndex(2) = 1.000000
frameDurationAtIndex(3) = 1.000000
frameDurationAtIndex(4) = 1.000000
frameDurationAtIndex(5) = 1.000000
frameDurationAtIndex(6) = 1.000000
frameDurationAtIndex(7) = 1.000000

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