Similar to #2604, `GetPropertyByName`/`SetPropertyByName` has only string property key. So, we can skip index and utf16 conversions.
This improves QuickJS benchmark score 5.8% on average.
Richards: 37.0 -> 41.2
DeltaBlue: 38.1 -> 41.4
Crypto: 59.6 -> 59.8
RayTrace: 146 -> 159
EarleyBoyer: 138 -> 142
Splay: 104 -> 106
NavierStokes: 10.2 -> 10.3
This Pull Request closes#1907.
It changes the following:
- Implement several early errors relating to labels, `break` and `continue` in the parser.
- Implement an early error for invalid cover grammar of object literals in the parser.
- Remove all remaining syntax errors from the bytecompiler.
This Pull Request fixes#2605.
It changes the following:
- Adds a CI check to run `cargo test --doc` since `nextest` doesn't support doc tests at the moment.
- Fixes the failing doc tests.
When a rust string literal is given for a property key, boa checks if it can be parsed as an index and converts the string into a utf16 slice. This PR rewrites each hard-coded property key as a utf16 slice so that we can bypass those conversions at runtime.
This improves QuickJS benchmark score 5% on average.
Richards: 35.4 -> 37.0
DeltaBlue: 35.0 -> 38.1
Crypto: 57.6 -> 59.6
RayTrace: 137 -> 146
EarleyBoyer: 131 -> 138
Splay: 98.3 -> 104
NavierStokes: 10.2 -> 10.2
Bumps [once_cell](https://github.com/matklad/once_cell) from 1.17.0 to 1.17.1.
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<h2>1.17.1</h2>
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<li>Make <code>OnceRef</code> implementation compliant with <a href="https://github-redirect.dependabot.com/rust-lang/rust/issues/95228">strict provenance</a>.</li>
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<li><a href="cc07949250"><code>cc07949</code></a> Explain safety of <code>unsync::OnceCell::get(&self)</code> in more detail</li>
<li><a href="af9d29c966"><code>af9d29c</code></a> drop useless arg</li>
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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.92 to 1.0.93.
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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.91 to 1.0.92.
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This Pull Request is meant to address #1900. While working on it, there was a decent amount of refactoring/restructuring. Initially, I had kept with the current approach of just keeping track of a kind and counter on the environment stack, especially because that kept the size of each stack entry to a minimum.
I did, however, make a switch to having the opcode create the `EnvStackEntry` with a start address and exit address for a bit more precision.
It changes the following:
- Consolidates `loop_env_stack` and `try_env_stack` into one `EnvStackEntry` struct.
- Changes `Continue`, `Break`, `LoopStart`, `LoopContinue`, `FinallyStart`, `FinallyEnd` and various others. Most of this primarily revolves around the creating of `EnvStackEntry` and interacting with the `env_stack`.
- Changes/updates the try-catch-finally, break and continue statement compilations as necessary
- Adds an `AbruptCompletionRecord` in place of the `finally_jump` vector.
- Adds some tests for try-catch-finally blocks with breaks.
I'm creating this draft PR, since I wanted to have some early feedback, and because I though I would have time to finish it last week, but I got caught up with other stuff. Feel free to contribute :)
The main thing here is that I have divided `eval()`, `parse()` and similar functions so that they can decide if they are parsing scripts or modules. Let me know your thoughts.
Then, I was checking the import & export parsing, and I noticed we are using `TokenKind::Identifier` for `IdentifierName`, so I changed that name. An `Identifier` is an `IdentifierName` that isn't a `ReservedWord`. This means we should probably also adapt all `IdentifierReference`, `BindingIdentifier` and so on parsing. I already created an `Identifier` parser.
Something interesting there is that `await` is not a valid `Identifier` if the goal symbol is `Module`, as you can see in the [spec](https://tc39.es/ecma262/#prod-LabelIdentifier), but currently we don't have that information in the `InputElement` enumeration, we only have `Div`, `RegExp` and `TemplateTail`. How could we approach this?
Co-authored-by: jedel1043 <jedel0124@gmail.com>
Hi,
the `vm-implied` fuzzer panics when executing this testcase:
```javascript
try {
new function() {
while (this) {}
}();
} catch {
}
```
`internal error: entered unreachable code: The NoInstructionsRemain native error cannot be converted to an opaque type`
Handling the `NoInstructionsRemain` error upfront instead of going through the VM exception handling logic seems to work.
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Adding a feature flag to the console import in `builtins`. I think this should fix the failing action on the `Upload docs and run benchmarks` step
This Pull Request changes the following:
- Implement binary `in` operation with private names.
- Adding a separate `BinaryInPrivate` expression in addition to the existing `Binary` expression seems like the best way to implement this in a typesafe manner. Other methods like adding an enum for the `Binary` lhs result in having to make assertions.
Small (ish?) step towards having proper realm records
This PR changes the following:
- Moves `Intrinsics` to `Realm`.
- Cleans up the initialization logic of our intrinsics to not depend on `Context`, unblocking things like #2314.
- Adds hooks to initialize the global object and the global this per the corresponding [`InitializeHostDefinedRealm ( )`](https://tc39.es/ecma262/#sec-initializehostdefinedrealm) hook. Though, this is currently broken because the vm uses `GlobalPropertyMap` instead of the `JsObject` API to initialize global properties.
This Pull Request changes the following:
- Move postfix/prefix increment and decrement operations from the `Unary` expression to a new `Update` expression.
- Add a special type for the `Update` expression target as it is very limited in comparision to an `Unary` target.
- This makes bytecode compilation more typesafe for these operations and removes syntax errors from the bytecompiler without introducing panics (see #1907).
Another change extracted from #2411.
This PR changes the following:
- Improves our identifier parsing with a new `Identifier` parser that unifies parsing for `IdentifierReference`, `BindingIdentifier` and `LabelIdentifier`.
- Slightly improves some error messages.
- Extracts our manual initialization of static `Sym`s with a new `static_syms` proc macro.
- Adds `set_module_mode` and `module_mode` to the cursor to prepare for modules.
Slightly related to #2411 since we need an API to pass module files, but more useful for #1760, #1313 and other error reporting issues.
It changes the following:
- Introduces a new `Source` API to store the path of a provided file or `None` if the source is a plain string.
- Improves the display of `boa_tester` to show the path of the tests being run. This also enables hyperlinks to directly jump to the tested file from the VS terminal.
- Adjusts the repo to this change.
Hopefully, this will improve our error display in the future.
Bumps [num_enum](https://github.com/illicitonion/num_enum) from 0.5.7 to 0.5.9.
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This Pull Request enables support for `no_std` targets on some of our sub-crates. I intentionally left out `boa_ast` and `boa_cli` because they're the largest crates we have after `boa_engine`.
`boa_gc` is a monster on its own, because we'll need to design a `no_std` multithreaded GC.
Anyways, this changes the following:
- Adds support for `no_std` on `boa_unicode`.
- Adds support for `no_std` on `boa_profiler`.
- Adds support for `no_std` on `boa_interner`.
- Adds support for `no_std` on `boa_icu_provider`.
Currently the compilation of assignment operators leads to a double object property access, both on the get and set access.
While this refactor adds special access handling instead of using the existing `access_set` and `access_get` functions, it fixes the double access and should also make the resulting code more efficient.
This Pull Request changes the following:
- Remove wrong early errors for static class methods with the computed property name `prototype`.
- Switch static class method definition opcodes from `__define_own_property__` to `define_property_or_throw` to correctly throw runtime errors on property redefinitions.
When compiling a statement list we need to make sure that the last expression that returns a value is compiled with the `use_expr` flag. Currently we set `use_expr` on the last statement of the statement list. This leads to incorrect returns when the last statement does not return a value. This PR fixes this by looking up the last value returning expression in a statement list and setting the `use_expr` appropriately.
This PR changes the following:
- Modifies `EphemeronBox` to be more akin to `GcBox`, with its own header, roots and markers. This also makes it more similar to [Racket's](https://docs.racket-lang.org/reference/ephemerons.html) implementation.
- Removes `EPHEMERON_QUEUE`.
- Ephemerons are now tracked on a special `weak_start` linked list, instead of `strong_start` which is where all other GC boxes live.
- Documents all unsafe blocks.
- Documents our current garbage collection algorithm. I hope this'll clarify a bit what exactly are we doing on every garbage collection.
- Renames/removes some functions.
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This Pull Request addresses #2295, and another case that I came across when I was adding `Break` to the `ByteCompiler`
I did have a question that came up during this regarding the spec. We currently don't implement the [BreakableStatement](https://tc39.es/ecma262/#prod-BreakableStatement). Any thoughts on whether we should be? Especially since `BreakableStatement` seems to be a bit of a inaccurate since `LabelledStatement` is breakable too.
It changes the following:
- Moves handling of label jump out of `compile_block` and into `compile_labelled`.
- Adds a couple more tests to keep track of `LabelledStatement` breaks.
Co-authored-by: Ness <Kevin.Ness@Staples.com>
Follows from #2528, and should complement #2411 to implement the module import hooks.
~~Similarly to the Intl/ICU4X PR (#2478), this has a lot of trivial changes caused by the new lifetimes. I thought about passing the queue and the hooks by value, but it was very painful having to wrap everything with `Rc` in order to be accessible by the host.
In contrast, `&dyn` can be easily provided by the host and has the advantage of not requiring additional allocations, with the downside of adding two more lifetimes to our `Context`, but I think it's worth.~~ I was able to unify all lifetimes into the shortest one of the three, making our API just like before!
Changes:
- Added a new `HostHooks` trait and a `&dyn HostHooks` field to `Context`. This allows hosts to implement the trait for their custom type, then pass it to the context.
- Added a new `JobQueue` trait and a `&dyn JobQueue` field to our `Context`, allowing custom event loops and other fun things.
- Added two simple implementations of `JobQueue`: `IdleJobQueue` which does nothing and `SimpleJobQueue` which runs all jobs until all successfully complete or until any of them throws an error.
- Modified `boa_cli` to run all jobs until the queue is empty, even if a job returns `Err`. This also prints all errors to the user.
The section about `Symbol` on the [specification](https://tc39.es/ecma262/#sec-ecmascript-language-types-symbol-type) says:
> The Symbol type is the set of all non-String values that may be used as the key of an Object property ([6.1.7](https://tc39.es/ecma262/#sec-object-type)).
Each possible Symbol value is unique and immutable.
Our previous implementation of `JsSymbol` used `Rc` and a thread local `Cell<usize>`. However, this meant that two different symbols in two different threads could share the same hash, making symbols not unique.
Also, the [GlobalSymbolRegistry](https://tc39.es/ecma262/#table-globalsymbolregistry-record-fields) is meant to be shared by all realms, including realms that are not in the same thread as the main one; this forces us to replace our current thread local global symbol registry with a thread-safe one that uses `DashMap` for concurrent access. However, the global symbol registry uses `JsString`s as keys and values, which forces us to either use `Vec<u16>` instead (wasteful and needs to allocate to convert to `JsString` on each access) or make `JsString` thread-safe with an atomic counter. For this reason, I implemented the second option.
This PR changes the following:
- Makes `JsSymbol` thread-safe by using Arc instead of Rc, and making `SYMBOL_HASH_COUNT` an `AtomicU64`.
- ~~Makes `JsString` thread-safe by using `AtomicUsize` instead of `Cell<usize>` for its ref count.~~ EDIT: Talked with @jasonwilliams and we decided to use `Box<[u16]>` for the global registry instead, because this won't penalize common usage of `JsString`, which is used a LOT more than `JsSymbol`.
- Makes the `GLOBAL_SYMBOL_REGISTRY` truly global, using `DashMap` as our global map that is shared by all threads.
- Replaces some thread locals with thread-safe alternatives, such as static arrays and static indices.
- Various improvements to all related code for this.
This Pull Request changes the following:
- Do not skip consecutive semicolons while parsing a `StatementList`.
- Expect semicolon in `LexicalDeclaration` and add an special case for `for` loop parsing.
- Adjust `StatementList` compilation to skip empty statements.
- Adjust/add tests to make sure consecutive semicolons are correctly parsed.
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Some small changes to the VM with the hopes of making it a bit more clear and concise.
It changes the following:
- Changes `code` to `code_block` and `code` to `bytecode` in `CallFrame` and `CodeBlock`, respectively.
- Adds some creation methods to `CallFrame`.
- Implements `Default` for `Vm`.
This Pull Request fixes various bugs related to classes.
The biggest changes are:
- Changed private names to be unique across multiple classes.
- Changed private name resolution to work via a visitor after a class is parsed. The way class early errors are defined makes it impossible to perform private name resolution while parsing.
- Added function names to class methods.
- Added class name binding to method function environments.
- Separated opcodes for `static` and non-`static` class method definitions to make the above operations possible.
There are still some bugs and further issues with classes but this is already a lot.
As part of the new modules PR, I was working on implementing the [host hooks](https://tc39.es/ecma262/#sec-host-hooks-summary) for the module import hooks and custom job queues. However, the promises module needed a bit of a refactor in order to couple with the new API. So, I thought it was a good idea to separate the promises refactor into its own PR, since the other PR is already big as it is.
- Replaced some usages of `JobCallback` with a new `NativeJob` that isn't traced by the GC, since those closures are always rooted and executed by the `Context` globally. This will also allow hosts to pass their custom jobs to the job queue, and maybe could also accept futures in the Future (pun intended 😆).
- Refactored several functions to account for the `HostPromiseRejectionTracker` hook which needs the promise `JsObject`.
- Rewrote some patterns with newer Rust idioms.
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Hi all! 😄
This Pull Request addresses #2424. There are also a few changes made to the `ByteCompiler`, the majority of which are involving `JumpControlInfo`.
It changes the following:
- Adds `Break` Opcode
- Shifts `compile_stmt` into the `statement` module.
- Moves `JumpControlInfo` to it's own module.
This PR is a complete redesign of our current native functions and closures API.
I was a bit dissatisfied with our previous design (even though I created it 😆), because it had a lot of superfluous traits, a forced usage of `Gc<GcCell<T>>` and an overly restrictive `NativeObject` bound. This redesign, on the other hand, simplifies a lot our public API, with a simple `NativeCallable` struct that has several constructors for each type of required native function.
This new design doesn't require wrapping every capture type with `Gc<GcCell<T>>`, relaxes the trait requirement to `Trace + 'static` for captures, can be reused in both `JsObject` functions and (soonish) host defined functions, and is (in my opinion) a bit cleaner than the previous iteration. It also offers an `unsafe` API as an escape hatch for users that want to pass non-Copy closures which don't capture traceable types.
Would ask for bikeshedding about the names though, because I don't know if `NativeCallable` is the most precise name for this. Same about the constructor names; I added the `from` prefix to all of them because it's the "standard" practice, but seeing the API doesn't have any other method aside from `call`, it may be better to just remove the prefix altogether.
Let me know what you think :)
This Pull Request changes the following:
- Pass a receiver value to the object `get` function in the `GetPropertyBy*` opcodes. The receiver value may be different from the object, because `ToObject` is not called on it.
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This Pull Request fixes/closes #2512 .
Removes `Literal::Undefined` so that `undefined` is treated as an identifier name. Ran the parser's idempotency fuzzer and ensured the bug doesn't reproduce.
Bumps [once_cell](https://github.com/matklad/once_cell) from 1.16.0 to 1.17.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/matklad/once_cell/blob/master/CHANGELOG.md">once_cell's changelog</a>.</em></p>
<blockquote>
<h2>1.17.0</h2>
<ul>
<li>Add <code>race::OnceRef</code> for storing a <code>&'a T</code>.</li>
</ul>
</blockquote>
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<summary>Commits</summary>
<ul>
<li><a href="85e372f818"><code>85e372f</code></a> Merge <a href="https://github-redirect.dependabot.com/matklad/once_cell/issues/213">#213</a></li>
<li><a href="fae9f73da6"><code>fae9f73</code></a> Add once_cell::race::OnceRef</li>
<li><a href="0d0dae1260"><code>0d0dae1</code></a> Merge <a href="https://github-redirect.dependabot.com/matklad/once_cell/issues/212">#212</a></li>
<li><a href="e94003a299"><code>e94003a</code></a> Removed Debug impls to de-clutter example</li>
<li><a href="3f750e1b6b"><code>3f750e1</code></a> Fixed <code>LateInit</code> example stack overflow</li>
<li><a href="ba8b9fe98b"><code>ba8b9fe</code></a> Merge <a href="https://github-redirect.dependabot.com/matklad/once_cell/issues/209">#209</a></li>
<li><a href="ea438d8e50"><code>ea438d8</code></a> Merge <a href="https://github-redirect.dependabot.com/matklad/once_cell/issues/210">#210</a></li>
<li><a href="f68835a884"><code>f68835a</code></a> fix miri tests</li>
<li><a href="6d46f401f7"><code>6d46f40</code></a> Add references to generic_once_cell</li>
<li><a href="47bf9ae994"><code>47bf9ae</code></a> Readme: Sync related crates to docs</li>
<li>See full diff in <a href="https://github.com/matklad/once_cell/compare/v1.16.0...v1.17.0">compare view</a></li>
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This Pull Request fixes/closes #2416.
Previously, prefix increment and decrement operations on `this` caused a panic. This PR makes the parser issue a syntax error when the operand UnaryExpression is not simple (as mentioned in https://tc39.es/ecma262/#sec-update-expressions-static-semantics-early-errors).
Just a general cleanup of the APIs of our `Context`.
- Reordered the `pub` and `pub(crate)/fn` methods to have a clear separation between our public and private APIs.
- Removed the call method and added it to `JsValue` instead, which semantically makes a bit more sense.
- Removed the `construct_object` method, and added an utility method `new` to `JsObject` instead.
- Rewrote some patterns I found while rewriting the calls of the removed function.
Bumps [serde](https://github.com/serde-rs/serde) from 1.0.151 to 1.0.152.
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<p><em>Sourced from <a href="https://github.com/serde-rs/serde/releases">serde's releases</a>.</em></p>
<blockquote>
<h2>v1.0.152</h2>
<ul>
<li>Documentation improvements</li>
</ul>
</blockquote>
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<li><a href="ccf9c6fc07"><code>ccf9c6f</code></a> Release 1.0.152</li>
<li><a href="b25d0ea7f9"><code>b25d0ea</code></a> Link to Hjson data format</li>
<li><a href="4f4557fd05"><code>4f4557f</code></a> Link to bencode data format</li>
<li><a href="bf400d6799"><code>bf400d6</code></a> Link to serde_tokenstream data format</li>
<li><a href="4d2e36d19b"><code>4d2e36d</code></a> Wrap flexbuffers bullet point to 80 columns</li>
<li><a href="df6310e5f5"><code>df6310e</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/serde-rs/serde/issues/2347">#2347</a> from dtolnay/docsrs</li>
<li><a href="938ab5ddec"><code>938ab5d</code></a> Replace docs.serde.rs links with intra-rustdoc links</li>
<li><a href="ef5a0de384"><code>ef5a0de</code></a> Point documentation links to docs.rs instead of docs.serde.rs</li>
<li><a href="5d186c77a6"><code>5d186c7</code></a> Opt out -Zrustdoc-scrape-examples on docs.rs</li>
<li>See full diff in <a href="https://github.com/serde-rs/serde/compare/v1.0.151...v1.0.152">compare view</a></li>
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`execute_instruction` is heavily used. After decoding an opcode, `match` is used to find a proper `execute` function for the opcode. But, the `match` may not be able to be optimized into a table jump by rust compiler, so it may use multiple branches to find the function. When I tested with a toy program, only `enum -> &'static str` case was optimized to use a table while `enum -> function call` uses multiple branches. ([gotbolt](https://rust.godbolt.org/z/1rzK5vj6f))
This change makes the opcode to use a table explicitly. It improves the benchmark score of Richards by 1-2% (22.8 -> 23.2).
This Pull Request fixes/closes #1180. (I'll open a tracking issue for the progress)
It changes the following:
- Redesigns the internal API of Intl to (hopefully!) make it easier to implement a service.
- Implements the `Intl.Locale` service.
- Implements the `Intl.Collator` service.
- Implements the `Intl.ListFormat` service.
On the subject of the failing tests. Some of them are caused by missing locale data in the `icu_testdata` crate; we would need to regenerate that with the missing locales, or vendor a custom default data.
On the other hand, there are some tests that are bugs from the ICU4X crate. The repo https://github.com/jedel1043/icu4x-test262 currently tracks the found bugs when running test262. I'll sync with the ICU4X team to try to fix those.
cc @sffc
Per the [Standard Library development guide](https://std-dev-guide.rust-lang.org/code-considerations/performance/inline.html):
> You can add `#[inline]`:
>
> - To public, small, non-generic functions.
>
> You shouldn't need `#[inline]`:
> - On methods that have any generics in scope.
> - On methods on traits that don't have a default implementation.
>
> `#[inline]` can always be introduced later, so if you're in doubt they can just be removed.
This PR follows this guideline to reduce the number of `#[inline]` annotations in our code, removing the annotation in:
- Non-public functions
- Generic functions
- Medium and big functions.
Hopefully this shouldn't impact our perf at all, but let's wait to see the benchmark results.
Bumps [serde](https://github.com/serde-rs/serde) from 1.0.150 to 1.0.151.
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<h2>v1.0.151</h2>
<ul>
<li>Update <code>serde::</code>{<code>ser</code>,<code>de</code>}<code>::StdError</code> to re-export <code>core::error::Error</code> when serde is built with <code>feature="std"</code> <strong>off</strong> and <code>feature="unstable"</code> <strong>on</strong> (<a href="https://github-redirect.dependabot.com/serde-rs/serde/issues/2344">#2344</a>)</li>
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<li><a href="f261184416"><code>f261184</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/serde-rs/serde/issues/2344">#2344</a> from dtolnay/coreerror</li>
<li><a href="df40f80fcf"><code>df40f80</code></a> Make StdError identical to core::error::Error on feature="unstable"</li>
<li><a href="e7060ba83d"><code>e7060ba</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/serde-rs/serde/issues/2342">#2342</a> from atouchet/badges</li>
<li><a href="d98f0eea3d"><code>d98f0ee</code></a> Update build status badge</li>
<li><a href="4f157a8b81"><code>4f157a8</code></a> Prevent build.rs rerunning unnecessarily on all source changes</li>
<li>See full diff in <a href="https://github.com/serde-rs/serde/compare/v1.0.150...v1.0.151">compare view</a></li>
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Bumps [thiserror](https://github.com/dtolnay/thiserror) from 1.0.37 to 1.0.38.
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<h2>1.0.38</h2>
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<li><a href="74bfe75eb2"><code>74bfe75</code></a> Release 1.0.38</li>
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<li><a href="db78fa2cd8"><code>db78fa2</code></a> Update ui test suite to nightly-2022-12-15</li>
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<li><a href="4b06a3e263"><code>4b06a3e</code></a> Add test of Display impl nested inside display attribute</li>
<li><a href="29ee95ef47"><code>29ee95e</code></a> Ui test changes for trybuild 1.0.66</li>
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