If two mutators concurrently execute a switchable call that targets a code object which has been disabled, they both go to runtime trying to fix that switchable call site's object pool. This Cl ensures we use the same logic as for other miss handlers to ensure we properly guard against concurrent accesses. The attached regression test will trigger a segfault - though only with low probability. Fixes https://github.com/dart-lang/sdk/issues/46539 TEST=vm/dart{,_2}/isolates/regress_46539_test Change-Id: I91d84d25d74fb742ea992016a581b118345dd404 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/205649 Commit-Queue: Martin Kustermann <kustermann@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>
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).
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.