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Add breaking change notice for #44660

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Bug: https://github.com/dart-lang/sdk/issues/44660
Change-Id: Ie0760c933a8adbc8b5964e38681c3f9e9dfef114
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/179584
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Kevin Moore <kevmoo@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
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Paul Berry 2021-01-20 20:28:07 +00:00 committed by commit-bot@chromium.org
parent efa1e18428
commit 8d980974a0
1 changed files with 15 additions and 9 deletions
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CHANGELOG.md
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@ -2,15 +2,21 @@
### Language
**Breaking Change** [Null
Safety](https://dart.dev/null-safety/understanding-null-safety) is now enabled
by default in all packages with a lower sdk constraint of 2.12.0 or greater.
Files that are not subject to language versioning (whether because they are not
contained in a pub package, or because the package that they are contained in
has no lower sdk constraint) are treated as opted into to null safety by default
and may report new errors. Pub packages may be opted out of null safety by
setting a min sdk constraint in pubspec.yaml of 2.9.0 or less. Files may be
opted out of null safety by adding `// @dart=2.9` to the beginning of the file.
* **Breaking Change** [Null
Safety](https://dart.dev/null-safety/understanding-null-safety) is now
enabled by default in all packages with a lower sdk constraint of 2.12.0 or
greater. Files that are not subject to language versioning (whether because
they are not contained in a pub package, or because the package that they
are contained in has no lower sdk constraint) are treated as opted into to
null safety by default and may report new errors. Pub packages may be opted
out of null safety by setting a min sdk constraint in pubspec.yaml of 2.9.0
or less. Files may be opted out of null safety by adding `// @dart=2.9` to
the beginning of the file.
* **Breaking Change** [#44660][]: Fixed an implementation bug where `this`
would sometimes undergo type promotion in extensions.
[#44660]: https://github.com/dart-lang/sdk/issues/44660
### Core libraries