It should be possible to place positioned items on the implicit grid. Right now the code doesn't allow it, but the spec doesn't say anything. More info: https://blogs.igalia.com/mrego/2016/05/27/css-grid-layout-and-positioned-items/#positioned-items-and-implicit-grid Blink patch: https://codereview.chromium.org/2021683002/
Created attachment 280074 [details] Patch fast/css-grid-layout/grid-positioned-items-implicit-grid.html test will be failing until patch for bug #155197 lands.
Comment on attachment 280074 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=280074&action=review Yes. > Source/WebCore/ChangeLog:10 > + However, the spec doesn't mention anything about this. Nit, use the same paragraph.
Comment on attachment 280074 [details] Patch Attachment 280074 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/1406005 New failing tests: fast/css-grid-layout/grid-positioned-items-implicit-grid.html
Created attachment 280078 [details] Archive of layout-test-results from ews100 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews100 Port: mac-yosemite Platform: Mac OS X 10.10.5
Comment on attachment 280074 [details] Patch Attachment 280074 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.webkit.org/results/1406006 New failing tests: fast/css-grid-layout/grid-positioned-items-implicit-grid.html
Created attachment 280079 [details] Archive of layout-test-results from ews107 for mac-yosemite-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: ews107 Port: mac-yosemite-wk2 Platform: Mac OS X 10.10.5
Comment on attachment 280074 [details] Patch Attachment 280074 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1406007 New failing tests: fast/css-grid-layout/grid-positioned-items-implicit-grid.html
Created attachment 280080 [details] Archive of layout-test-results from ews123 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews123 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Comment on attachment 280074 [details] Patch Attachment 280074 [details] did not pass mac-debug-ews (mac): Output: http://webkit-queues.webkit.org/results/1406025 New failing tests: fast/css-grid-layout/grid-positioned-items-implicit-grid.html
Created attachment 280081 [details] Archive of layout-test-results from ews115 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews115 Port: mac-yosemite Platform: Mac OS X 10.10.5
Created attachment 280082 [details] Patch Thanks for the review, anyway it needs to wait for bug #155197 to land first.
Comment on attachment 280082 [details] Patch Clearing flags on attachment: 280082 Committed r201545: <http://trac.webkit.org/changeset/201545>
All reviewed patches have been landed. Closing bug.