[dart2js] Fix scope visitor missing not visiting structural parameter default type. By not visiting the default type of structural type parameters, the scope visitor was not registering the T type parameter as being potentially needed for RTI. So then the SSA RTI builder did not have the necessary scope info to create the RTI objects for the closures' signatures. Fixed: 54451 Change-Id: I96f2af985bd176e71a6779fd27b09efdd76fe6cf Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/343660 Commit-Queue: Nate Biggs <natebiggs@google.com> Reviewed-by: Stephen Adams <sra@google.com>
Dart is:
Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.
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.
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See LICENSE and PATENT_GRANT.
Visit dart.dev to learn more about the language, tools, and to find codelabs.
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