commit | d6a9f0d3443a8c55165c954ef91f722ebcfb23d9 | [log] [tgz] |
---|---|---|
author | Morten Stenshorne <mstensho@chromium.org> | Wed Oct 05 22:00:45 2022 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Wed Oct 05 22:22:56 2022 |
tree | 21b74de1092e1a9b389fa85721af0e1ca19e2789 | |
parent | 2b8a44ce36ee48793788d9a8ff3ead1197bfeb7c [diff] |
Only apply clearance at the beginning of a node. In other words, never attempt to apply clearance when resuming layout of a node. This caused a dangerous situation, now that we support caching of fragmented nodes. If we abort layout (with kBfcBlockOffsetResolved) after having successfully placed earlier fragments, we'd clean all cached results in NGBlockNode::FinishLayout(), which would confuse various parts of the code (thinking that we still have the results). The fatal stab was ShrinkLayoutResults() in NGBlockNode:: StoreResultInLayoutBox() which would pass an index out-of-range, causing the vector implementation to access memory outside the allocated buffer. Just make sure that we don't apply clearance when we're past the first fragment, and additionally add a DCHECK that would fail if we abort layout (and delete all cached layout results) after having already added results. In addition to fixing a security issue, this also makes us render stuff correctly. Tests included. Bug: 1370969 Change-Id: I5bfcdae7336d7e16d4ba2aa6493dcea2e9c34d7f Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3934767 Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org> Commit-Queue: Morten Stenshorne <mstensho@chromium.org> Cr-Commit-Position: refs/heads/main@{#1055496}
The web-platform-tests Project is a cross-browser test suite for the Web-platform stack. Writing tests in a way that allows them to be run in all browsers gives browser projects confidence that they are shipping software that is compatible with other implementations, and that later implementations will be compatible with their implementations. This in turn gives Web authors/developers confidence that they can actually rely on the Web platform to deliver on the promise of working across browsers and devices without needing extra layers of abstraction to paper over the gaps left by specification editors and implementors.
The most important sources of information and activity are:
wpt:matrix.org
matrix channel; includes participants located around the world, but busiest during the European working day.If you'd like clarification about anything, don't hesitate to ask in the chat room or on the mailing list.
Clone or otherwise get https://github.com/web-platform-tests/wpt.
Note: because of the frequent creation and deletion of branches in this repo, it is recommended to “prune” stale branches when fetching updates, i.e. use git pull --prune
(or git fetch -p && git merge
).
See the documentation website and in particular the system setup for running tests locally.
The wpt
command provides a frontend to a variety of tools for working with and running web-platform-tests. Some of the most useful commands are:
wpt serve
- For starting the wpt http serverwpt run
- For running tests in a browserwpt lint
- For running the lint against all testswpt manifest
- For updating or generating a MANIFEST.json
test manifestwpt install
- For installing the latest release of a browser or webdriver server on the local machine.wpt serve-wave
- For starting the wpt http server and the WAVE test runner. For more details on how to use the WAVE test runner see the documentation.On Windows wpt
commands must be prefixed with python
or the path to the python binary (if python
is not in your %PATH%
).
python wpt [command]
Alternatively, you may also use Bash on Ubuntu on Windows in the Windows 10 Anniversary Update build, then access your windows partition from there to launch wpt
commands.
Please make sure git and your text editor do not automatically convert line endings, as it will cause lint errors. For git, please set git config core.autocrlf false
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The way to contribute is just as usual:
git checkout -b topic
../wpt lint
as described above.If you spot an issue with a test and are not comfortable providing a pull request per above to fix it, please file a new issue. Thank you!