Google Git
Sign in
dart / sdk / b205ea18cb49fe86af507076bda35c31fa06202d
commitb205ea18cb49fe86af507076bda35c31fa06202d[log] [tgz]
authorAlexander Markov <alexmarkov@google.com>Wed Jan 04 15:26:34 2023 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jan 04 15:26:34 2023 +0000
tree63b3e071e701d4ad0ef4a5b6449a4a3a4fb516c0
parentade4e52fa54b9d34b9940ced10ce6022aabb1eaa [diff]
[vm] Fix compiler crash when returning a value of uninitialized late variable from async function

This change fixes CompileType::CanBeFuture() which previously attempted
to use Class objects by class id without first checking if cid is internal.

Cid can be internal (SentinelCid) when CompileType::CanBeFuture() is
called for a return value of an async function when it is returning
a value of an uninitialized late local variable (such Return
instruction is unreachable).

TEST=runtime/tests/vm/dart/regress_flutter117892_test.dart
Fixes https://github.com/flutter/flutter/issues/117892

Change-Id: I63f0ca32d6246487f5c33d983cef9bd22aaa2fb8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/278094
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2 files changed
tree: 63b3e071e701d4ad0ef4a5b6449a4a3a4fb516c0
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .style.yapf
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. OWNERS
  30. PATENT_GRANT
  31. PRESUBMIT.py
  32. README.dart-sdk
  33. README.md
  34. sdk_args.gni
  35. SECURITY.md
  36. WATCHLISTS
README.md

Dart

A client-optimized language for fast apps on any platform

Dart is:

  • Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.

  • Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

  • Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.

  • Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

Dart platforms illustration

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, and to find codelabs.

Browse pub.dev for more packages and libraries contributed by the community and the Dart team.

Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.