[Webkit-unassigned] [Bug 142885] New: FEMorphology::platformApplyGeneric() should bail out if the radius is less than or equal to zero.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142885

            Bug ID: 142885
           Summary: FEMorphology::platformApplyGeneric() should bail out
                    if the radius is less than or equal to zero.
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: zimmermann at kde.org

The caller of this function FEMorphology::platformApplySoftware() bails out early if the radius is less than or equal to zero. However when applying the scaling, the resulted radius might be less than zero due to overflow. This radius is passed to FEMorphology::platformApplyGeneric() via FEMorphology::platformApply() and the calculations are carried out needlessly.

We need to clean up this function a little to handle this corner case and to remove repeated code to inline functions.

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