[Webkit-unassigned] [Bug 250543] New: ImageData() should return a DOMException if index or size is too big

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=250543

            Bug ID: 250543
           Summary: ImageData() should return a DOMException if index or
                    size is too big
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: BrowserCompat, WPTImpact
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: karlcow at apple.com
                CC: dino at apple.com

new ImageData(1 << 31, 1 << 31);

returns in Safari TP160

rangeerror: Cannot allocate a buffer of this size

while it returns 

Firefox: Uncaught DOMException: Index or size is negative or greater than the allowed amount
Chrome:  Uncaught DOMException: Failed to construct 'ImageData': The requested image size exceeds the supported range.


See https://searchfox.org/wubkat/rev/12fc92585a259a29b2522e7e902492be45a57b6a/Source/WebCore/html/ImageData.cpp#87-123


This is expected to pass 
http://wpt.live/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.basics.html
https://wpt.fyi/results/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.basics.html

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