| commit | 6378a262120bee83da594da00fa26449ddfb10e1 | [log] [tgz] |
|---|---|---|
| author | Daco Harkes <dacoharkes@google.com> | Fri Aug 23 07:03:15 2024 +0000 |
| committer | Daco Harkes <dacoharkes@google.com> | Fri Aug 23 07:03:15 2024 +0000 |
| tree | c05d588e19a247e5edbc70c732d330b118831652 | |
| parent | 87f7758b88814eebc24a58d9f9699e07d293a240 [diff] |
[vm] Variable scoping fixes This CL fixes two bugs related to scoping: 1. Empty variable name lookup in outer functions failing. 2. Let expressions not pushing and popping contexts. Additionally, this CL introduces a `--print-scoping` debug flag to ease debugging scoping issues in the future. Variable lookup is now only using kernel offset, unless the offset is `kNoKernelOffset`. In that case, the names are used. All synthetic variables in the VM now use `kNoKernelOffset` as their offset. The let expressions not pushing contexts is fixed by pushing context. The context is only pushed if the scope captures variables. So this should not lead to performance regressions. (Any lacking pushing of scopes should have lead to crashes.) TEST=tests/ffi/regress_56412_2_test.dart TEST=tests/ffi/regress_56412_test.dart Closes: https://github.com/dart-lang/sdk/issues/56412 Change-Id: I85fc4a161b833df80ce8f2911d618aa2ac9797eb Cq-Include-Trybots: dart/try:vm-aot-android-release-arm64c-try,vm-aot-android-release-arm_x64-try,vm-aot-asan-linux-release-x64-try,vm-aot-linux-debug-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-mac-release-arm64-try,vm-aot-mac-release-x64-try,vm-aot-msan-linux-release-x64-try,vm-aot-obfuscate-linux-release-x64-try,vm-aot-optimization-level-linux-release-x64-try,vm-aot-tsan-linux-release-x64-try,vm-aot-ubsan-linux-release-x64-try,vm-aot-win-debug-arm64-try,vm-aot-win-debug-x64-try,vm-aot-win-debug-x64c-try,vm-appjit-linux-debug-x64-try,vm-asan-linux-release-arm64-try,vm-asan-linux-release-x64-try,vm-checked-mac-release-arm64-try,vm-eager-optimization-linux-release-ia32-try,vm-eager-optimization-linux-release-x64-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64c-try,vm-ffi-qemu-linux-release-arm-try,vm-ffi-qemu-linux-release-riscv64-try,vm-fuchsia-release-arm64-try,vm-fuchsia-release-x64-try,vm-linux-debug-ia32-try,vm-linux-debug-x64-try,vm-linux-debug-x64c-try,vm-mac-debug-arm64-try,vm-mac-debug-x64-try,vm-msan-linux-release-arm64-try,vm-msan-linux-release-x64-try,vm-reload-linux-debug-x64-try,vm-reload-rollback-linux-debug-x64-try,vm-tsan-linux-release-arm64-try,vm-tsan-linux-release-x64-try,vm-ubsan-linux-release-arm64-try,vm-ubsan-linux-release-x64-try,vm-win-debug-arm64-try,vm-win-debug-x64-try,vm-win-debug-x64c-try,vm-win-release-ia32-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380983 Reviewed-by: Slava Egorov <vegorov@google.com> Reviewed-by: Alexander Markov <alexmarkov@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.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
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See LICENSE and PATENT_GRANT.
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.
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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 in our repo at docs.
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