Bug 91189 – ASSERT in tspan's localCoordinateSpaceTransform via getCTM()

• Component: SVG
• Status: RESOLVED FIXED

[Philip Rogers]

Created attachment 152151 [details]
Testcase

Consider the following:
<tspan id="tspan">
  <g id="g"></g>
</tspan>

This is not allowed per the SVG content model but we allow the DOM tree to exist (we just don't build the associated render tree). Asking for getCTM() on the <g> will walk the ancestors and assert in SVGStyledElement::localCoordinateSpaceTransform because the tspan does not have a transform. Firefox and Opera appear to just return the identity matrix in this case.

I think we should remove the ASSERT in this case, returning the identity matrix and treating the tspan as having no transform.

[Philip Rogers]

Created attachment 152156 [details]
Proposed patch

[Nikolas Zimmermann]

Comment on attachment 152156 [details]
Proposed patch

Seems reasonable, r=me.

[Philip Rogers]

(In reply to comment #2)
> (From update of attachment 152156 [details])
> Seems reasonable, r=me.

Thanks for the quick review.

This patch makes debugging https://bugs.webkit.org/show_bug.cgi?id=91141 with ASAN builds much easier :)

[WebKit Review Bot]

Comment on attachment 152156 [details]
Proposed patch

Rejecting attachment 152156 [details] from commit-queue.

Failed to run "['/mnt/git/webkit-commit-queue/Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '-..." exit_code: 2

Last 500 characters of output:
commit-queue/Source/WebKit/chromium/third_party/v8-i18n --revision 105 --non-interactive --force --accept theirs-conflict --ignore-externals' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'
46>At revision 105.

________ running '/usr/bin/python tools/clang/scripts/update.py --mac-only' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'

________ running '/usr/bin/python gyp_webkit' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'
Updating webkit projects from gyp files...

Full output: http://queues.webkit.org/results/13208997

[Philip Rogers]

Created attachment 152302 [details]
Remove oops in the changelog.

[WebKit Review Bot]

Comment on attachment 152302 [details]
Remove oops in the changelog.

Clearing flags on attachment: 152302

Committed r122616: <http://trac.webkit.org/changeset/122616>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.