Created attachment 252474 [details]
Example to reproduce the crash
If you try to get the computed style of a grid shorthand (grid-template or grid) you'll get a crash if it happens before layout.
To reproduce the issue simply open the attached file (you can check that it happens the same with grid shorthand).
This is the same issue than: https://code.google.com/p/chromium/issues/detail?id=485085
Created attachment 252477 [details]
Comment on attachment 252477 [details]
Clearing flags on attachment: 252477
Committed r183913: <http://trac.webkit.org/changeset/183913>
All reviewed patches have been landed. Closing bug.