This change adds rudimentary support for C++ ranges in Carbon range-for
loops. Since C++ ranges are exposed through `Core.Iterate`, C++ ranges
have the same limitations as Carbon ranges (e.g. can't return
references).
`Iterate.CursorType` now requires `Destroy`, since types that implement
`CppRangeForIterate` can't be used in range-for loops unless their
cursor type can be verifiably destructible.
Since we can't currently iterate over ranges as references, the
`CppUnsafeDeref` interface can't require types that implement it to take
or return references.
Update the orphan rule to require a name to be defined within, or by,
the same scope as the impl declaration. Since libraries can not be
nested, this also enforces the old rule, but rejects more impl
declarations. In particular, it rejects an impl declaration in a generic
context which would have no way to provide a value for the generic
bindings it inherited from its enclosing scope, making the impl
unusable.
Discussed in open discussion
[2026-05-04](https://docs.google.com/document/d/1mjllGO3ZCL4qGt9uJHUtcxKoHAGEY7Y999ie4EtBWB8/edit?tab=t.3ifnhz83n73d#heading=h.p45zfugbmdih).
When we import from another library in the same package, its entities
end up with our library as their parent scope, resulting in cross-file
fingerprint mismatches. Instead, only include the library ID when
fingerprinting either a package-private entity or an `ImportIRId` that
refers to a particular `SemIR::File`.
Instead of requiring just one to have a designator, require each one.
You can't write `(type where A == B) & (type where C == .Self)` because
`A == B` has no designator. If the two facet types are combined into a
single `where` syntactically, their meaning does not change, and what we
allow should not change either. That is, `type where A == B and C ==
.Self` should be rejected since `A == B` does not contain a designator.
The design is also updated to make this clear.
Pass a function's self specific in `ScopeStack::PushForFunctionBody` and
remove assertion preventing lexical scopes from having specific IDs.
This allows lexical lookup within the function to find entities
associated with its self specific.
Closes#6793
Use the Carbon-computed alignment for allocas, loads, stores, and
memcpys. Previously we used whatever LLVM felt like giving us, which
would result in ABI mismatches and runtime crashes due to misalignment
when creating objects of imported C++ class types, as well as resulting
in some surprising choices like `(i32, i32)` and `()` having 8-byte
alignment instead of 4 and 1, respectively.
For now, disable the use of array types as by-var paramters and by-init
return types when exporting Carbon functions to C++, as C++ does not
support raw arrays being passed or returned by value.
Assisted-by: Gemini via Antigravity
Note that #7266 has already updated the toolchain for `char`, but not
`Core.CharLiteral`.
Assisted-by: Gemini via Antigravity
---------
Co-authored-by: Josh L <josh11b@users.noreply.github.com>
Co-authored-by: Geoff Romer <gromer@google.com>
Include the library name in the fingerprint of an entity declared
`private` at namespace scope. Include the entity's fingerprint in the
mangling of a library-private entity.
This fixes miscompiles if two libraries in the same package declare
`private` entites with the same name. We can't fix this with internal
linkage because library-private entities can be reachable through
generics defined in the API file of the library.
Assisted-by: Gemini via Antigravity
As suggested in [1], replace `FieldInitializerMap` with a `FieldStore`.
The corresponding `FieldId` is now stored in `FieldDecl`. To make room
for the `FieldId`, the `ElementIndex` is now stored in the `Field`,
along with the initializer.
In import_ref.cpp, resolving `FieldDecl` initializers is now supported,
and in convert.cpp `LoadImportRef` is called to do so. The
`field_initializer_import.carbon` test now passes.
Printing a `FieldDecl` instruction now prints the initializer as well,
if present. See field_initializer.carbon for an example.
[1]:
https://github.com/carbon-language/carbon-lang/pull/7238#discussion_r3283217158
The `unused` modifier is rejected on parameters of a function
declaration, but the check only covered the explicit parameter list, so
an implicit parameter (such as self or a compile-time binding) could
carry unused without a definition. Check the implicit parameter list
too.
The code changes and the test updates are split into two commits for
easier review.
Assisted-by: Claude Code with Claude Opus 4.7
---------
Co-authored-by: Christopher Di Bella <cjdb.ns@gmail.com>
Carbon-side thunks (for example the `Copy`/`Destroy` witness thunks
generated for imported C++ types) are mangled by Carbon, and their names
incorporate a fingerprint of the involved types. The instruction
fingerprinter identifies a class only by its name and parent scope,
which is sufficient for Carbon classes but not for imported C++ classes:
different specializations of one class template (and other cases such as
types in anonymous namespaces) share a Carbon name and parent scope. As
a result, the thunks for two distinct specializations could mangle to
the same name, producing a single LLVM function with two definitions and
failing `verifyModule` during lowering.
When fingerprinting a class imported from C++, also include the Clang
mangled name of its type.
Test: toolchain/lower/testdata/interop/cpp/thunks.carbon gains a split
with two specializations of one class template, each requiring a thunk;
their thunks now get distinct mangled names instead of colliding.
Assisted-by: Claude Code
---------
Co-authored-by: Christopher Di Bella <cjdb.ns@gmail.com>
The `--dump-cpp-ast` file tests strip references to Clang builtins so
that the expected output is target-independent. The filter anchored a
`__`-prefixed builtin identifier on a preceding space or quote, which
matches the x86-64 `__va_list_tag` spelling but not the AArch64
`std::__va_list`, where `__` is preceded by the `::` namespace
qualifier. That left a single `RecordType 'std::__va_list'` line
unfiltered on AArch64, producing a spurious autoupdate diff for
`thunk_ast.carbon`.
Anchor the match on a preceding `:` as well so namespace-qualified
builtins are also filtered.
Carbon's test workflow covered Linux on x86-64 and macOS on AArch64, but
had no Linux AArch64 coverage, so AArch64-specific issues that don't
reproduce on macOS could land unnoticed. Add an `ubuntu-22.04-arm`
runner to the matrix.
The release used for Linux does not publish the monolithic
`LLVM-*-Linux-ARM64` package, only a `clang+llvm-*-aarch64-linux-gnu`
community build with a smaller tool set, so the Ubuntu setup now selects
the tarball by `runner.arch`. The prune step uses `rm -f` since the two
packages do not ship an identical set of tools to remove.
Assisted-by: Claude Code with Claude Opus 4.7
We've talked about adding the title to the filename several times over
the years and it seems really valuable. This requires us to compute a
"slug" for the title spelling that can be part of the filename.
Beyond that, we crossed 7000 recently, and so it seems likely that we
will need to add digits sooner rather than later here, so this goes
ahead and moves us to 6 digits so we don't have to adjust again for a
reasonable length of time.
To implement this and ensure we can sustain it going forward this adds a
tool to our pre-commit that validates (and corrects if needed) the
filename.
In order to update everything and keep links working, there are a _lot_
of changes, but the most interesting for direct review are in
`proposals/scripts`.
Assisted-by: Antigravity with Gemini
---------
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
Also make some updates and improvements to fine-tune existing skills.
Simplify AGENTS.md to remove redundant instructions that duplicate
information that's already in skill files -- skills should be loaded
automatically and should not need to be redundantly specified in
AGENTS.md.
Assisted-by: Gemini via Antigravity
This removes the need to install any specific version of Python or
figure out how to configure it by instead asking users to install `uv`
and letting it manage Python. Among other advantages, `uv` is designed
to be fast enough to embed directly into our scripts.
We were already using this in `bench_runner.py` so that the script could
import non standard library dependencies. Moving to it for the rest of
our Python unifies the approach and will also enable dependencies
whenever needed.
I've left `github_tools` alone as it has special handling with its own
Bazel setup.
I've updated the contributing tools to explain the approach here.
When forming the constant value of a `where` expression, don't consider
it to be `.Self`-dependent if the dependence only comes from the RHS of
the `where`. More generally, ignore `.Self` dependence when evaluating a
facet type unless it comes from an extended interface or named
constraint. While we can get other kinds of constraint from the
left-hand side of a `where`, such constraints must either come from the
right-hand side of other `where` expressions or be extend constraints.
This fixes a crash in lowering caused by a concrete function containing
a `.Self`-symbolic `where` constant.
Assisted-by: Gemini via Antigravity
When performing deduction for a call to a generic function, we would
previously convert runtime arguments to match the parameter type, then
throw away the result. Instead, track whether deduction needs the value
of the argument, which will be the case only within compile-time
contexts such as generic bindings and types of instructions, and only
perform conversions during deduction for those contexts.
Fixes miscompiles when passing an argument requiring a runtime
conversion with side-effects to a generic function, where previously the
side-effects would have happened twice! (Once from deduction and once
from the real call argument conversion.)
Assisted-by: Gemini via Antigravity
LSP assumes lines are index 0 to n-1, but Carbon Locs are index from 1
to n. We had the logic for this correct for the start of range but not
for the end of range (inclusive range).
Before this was the diagnostic span we would produce:
```carbon
fn F() {
return ();
<~~~~~~~~>
}
<~~~~~~~~~~~>
```
after:
```carbon
fn F() {
return ();
<~~~~~~~~>
}
```
Subst is typically used for constant values, in which case an
`ErrorInst` anywhere results in a final `ErrorInst`. However there are
some use cases for substituting non-canonical instructions. And in that
case we need to take care in two ways:
- Some instructions have no constant value, such as the requirements in
a (non-canonical) `WhereExpr` instruction. When we rebuild them, we
can't do so by building a constant value and getting the canonical inst
id, since the constant value will be "runtime". For rebuilding a
non-canonical instruction, we should `AddInst` instead.
- When substituting something in a non-canonical instruction with an
`ErrorInst` inside it, we want to preserve the structure of the
non-canonical instruction, and leave the `ErrorInst` in place. As such,
we remove the early out in Subst so that we keep substituting after
encountering an error.
However the rewrite constraint resolution was relying on the `ErrorInst`
early out to correctly stop recursing when it found a cycle. So now we
do the checks for a cycle in its `SubstCallbacks` subclass, and avoid
substituting and rebuilding instructions once we have encountered a
cycle.
A lot of this is based on a few experiments using tools to help
synthesize a cohesive proposal or improve them. Likely more that can be
done here to get the most out of our tools in this space.
Assisted-by: Antigravity with Gemini
Allow a `ref`-tagged expression to be converted to match a reference
parameter. Move the `ref` checks to the start of `Convert`. Remove the
diagnostic for applying `ref` to a non-reference expression so that
non-reference expressions that convert to a reference would be accepted
(although we don't currently have any such conversions).
Assisted-by: Gemini via Antigravity
We allow impl lookup to use `Self` which is partially identified, but we
were only allowing this for the `Self` facet appearing in the impl
lookup query self. We should also allow it when `Self` appears in the
impl lookup query target facet type.
But demonstrate that `Self` appearing in the interface of an
ImplWitnessAccess (a compound member access) is not sufficient at this
time, as it does not put `Self` into the type structure.
The `.Self` needs to be canonicalized when recording the witness, since
it will be a FacetAccessType in the `impls` clause.
Todo tests are also added for `C impls Y(.Self)`. The `.Self` in the
interface specific breaks everything as we end up replacing the `.Self`
with `C` in later `C as Y(.Self)` lookups, which then does not find the
witness.
Pull all the witnesses from `impls` constraints so that we capture
witnesses coming from named constraints on different self types, as `C
impls N(.Self)` may give witnesses for `C` or for other self types.
Bumps the npm_and_yarn group with 1 update in the /utils/vscode
directory: [qs](https://github.com/ljharb/qs).
Updates `qs` from 6.15.1 to 6.15.2
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/ljharb/qs/blob/main/CHANGELOG.md">qs's
changelog</a>.</em></p>
<blockquote>
<h2><strong>6.15.2</strong></h2>
<ul>
<li>[Fix] <code>stringify</code>: skip null/undefined entries in
<code>arrayFormat: 'comma'</code> + <code>encodeValuesOnly</code>
instead of crashing in <code>encoder</code></li>
<li>[Fix] <code>stringify</code>: use configured <code>delimiter</code>
after <code>charsetSentinel</code> (<a
href="https://redirect.github.com/ljharb/qs/issues/555">#555</a>)</li>
<li>[Fix] <code>stringify</code>: apply <code>formatter</code> to
encoded key under <code>strictNullHandling</code> (<a
href="https://redirect.github.com/ljharb/qs/issues/554">#554</a>)</li>
<li>[Fix] <code>stringify</code>: skip null/undefined filter-array
entries instead of crashing in <code>encoder</code> (<a
href="https://redirect.github.com/ljharb/qs/issues/551">#551</a>)</li>
<li>[Fix] <code>parse</code>: handle nested bracket groups and add
regression tests (<a
href="https://redirect.github.com/ljharb/qs/issues/530">#530</a>)</li>
<li>[readme] fix grammar (<a
href="https://redirect.github.com/ljharb/qs/issues/550">#550</a>)</li>
<li>[Dev Deps] update <code>@ljharb/eslint-config</code></li>
<li>[Tests] add regression tests for keys containing percent-encoded
bracket text</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ljharb/qs/commit/9aca4076fe788338c67cf7e115f0be6bc58d85a8"><code>9aca407</code></a>
v6.15.2</li>
<li><a
href="https://github.com/ljharb/qs/commit/5e33d33447ed0bf1ddab9abc41d27dea4687d992"><code>5e33d33</code></a>
[Dev Deps] update <code>@ljharb/eslint-config</code></li>
<li><a
href="https://github.com/ljharb/qs/commit/21f80b33e5c8b3f7eba1034fff0da4a4a37a1d41"><code>21f80b3</code></a>
[Fix] <code>stringify</code>: skip null/undefined entries in
<code>arrayFormat: 'comma'</code> + `e...</li>
<li><a
href="https://github.com/ljharb/qs/commit/a0a81ea2071acce3eff41a040f719ac8f5c4f64c"><code>a0a81ea</code></a>
[Fix] <code>stringify</code>: use configured <code>delimiter</code>
after <code>charsetSentinel</code></li>
<li><a
href="https://github.com/ljharb/qs/commit/e3062f78f5233b338ceeb8e8dfa5a07dea4b32a8"><code>e3062f7</code></a>
[Fix] <code>stringify</code>: apply <code>formatter</code> to encoded
key under <code>strictNullHandling</code></li>
<li><a
href="https://github.com/ljharb/qs/commit/0c180a40adb8c6703fffc85b2ff06ca209f5c1e0"><code>0c180a4</code></a>
[Fix] <code>stringify</code>: skip null/undefined filter-array entries
instead of crashi...</li>
<li><a
href="https://github.com/ljharb/qs/commit/3a8b94aec19bd664720f6f6b1e66c4a0dfe4b656"><code>3a8b94a</code></a>
[Tests] add regression tests for keys containing percent-encoded bracket
text</li>
<li><a
href="https://github.com/ljharb/qs/commit/96755abd357c0e534dd3442a84a04d08864bfe0d"><code>96755ab</code></a>
[readme] fix grammar</li>
<li><a
href="https://github.com/ljharb/qs/commit/a419ce5bbfcdb98a299f1a0bb47ea055baef20e6"><code>a419ce5</code></a>
[Fix] <code>parse</code>: handle nested bracket groups and add
regression tests</li>
<li>See full diff in <a
href="https://github.com/ljharb/qs/compare/v6.15.1...v6.15.2">compare
view</a></li>
</ul>
</details>
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If a keyword or a sized type literal (eg, `f2`) is used in a context
where we are confident that we are expecting an identifier -- either
before a `:` in a binding pattern or after a `.` in a member access or
designator -- then recover as if a raw identifier was used.
This appears to be a particular stumbling block for coding agents, so
seems worth paying special attention to.
Add a mechanism to the tokenized buffer to track additional tokens
synthesized for error recovery so that we can keep the lexed token
sequence immutable and still satisfy the invariants throughout the rest
of the toolchain for recovery tokens. Thanks to chandlerc for suggesting
this approach!
`CppRangeForIterate` needs to support finding `begin()`/`end()` as a
pair of methods and as a pair of ADL-findable functions. This change
adds the ADL component, which lets us also diagnose types that don't
implement the interface.
Unlike methods, we apparently have support for overloads when using ADL.
In handle_let_and_var.cpp, field initializers are now handled like
regular `var` initializers, by calling `LocalPatternMatch`.
In pattern_match.cpp, `FieldDecl`s with initializers are handled by
storing a value in `SemIR::File::field_initializers()`. This is a new
map where the keys are `FieldDecl` `InstId`s and the map values are
`InstId`s representing the initializer value.
In convert.cpp, `ConvertStructToStructOrClass` now has a `get_default`
function parameter that callers can use to provide a field default.
`ConvertStructToClass` uses this to provide a default from field
initializers.
Flush diagnostics before destroying Clang. If we see an `inline Cpp` and
`Cpp` initialization failed, recover by skipping the inline code rather
than CHECK-failing.
Bumps the pip group with 1 update in the /github_tools directory:
[idna](https://github.com/kjd/idna).
Updates `idna` from 3.7 to 3.15
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/kjd/idna/releases">idna's
releases</a>.</em></p>
<blockquote>
<h2>v3.15</h2>
<p>No release notes provided.</p>
<h2>v3.14</h2>
<p>No release notes provided.</p>
<h2>v3.13</h2>
<p>No release notes provided.</p>
<h2>v3.12</h2>
<p>No release notes provided.</p>
<h2>v3.11</h2>
<p>No release notes provided.</p>
<h2>v3.10</h2>
<p>No release notes provided.</p>
<h2>v3.9</h2>
<p>No release notes provided.</p>
<h2>v3.8</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix regression where IDNAError exception was not being produced for
certain inputs.</li>
<li>Add support for Python 3.13, drop support for Python 3.5 as it is no
longer testable.</li>
<li>Documentation improvements</li>
<li>Updates to package testing using Github actions</li>
</ul>
<p>Thanks to Hugo van Kemenade for contributions to this release.</p>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/kjd/idna/compare/v3.7...v3.8">https://github.com/kjd/idna/compare/v3.7...v3.8</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/kjd/idna/blob/master/HISTORY.md">idna's
changelog</a>.</em></p>
<blockquote>
<h2>3.15 (2026-05-12)</h2>
<ul>
<li>Enforce DNS-length cap on individual labels early in
<code>check_label</code>,
short-circuiting contextual-rule processing for oversized input
while staying compatible with UTS 46 usage.</li>
<li>Tidy core helpers: hoist bidi category sets to module-level
frozensets (avoiding per-codepoint list construction), simplify
length checks, and reuse the shared <code>_unicode_dots_re</code> from
<code>idna.core</code> in the codec module.</li>
<li>Use <code>raise ... from err</code> for proper exception chaining
and
switch internal string formatting to f-strings.</li>
<li>Allow <code>flit_core</code> 4.x in the build backend.</li>
<li>Expand the ruff lint set (flake8-bugbear, flake8-simplify,
pyupgrade, perflint) and apply the surfaced fixes; pin lint CI
to Python 3.14.</li>
<li>Add Dependabot configuration for GitHub Actions.</li>
<li>Convert README and HISTORY from reStructuredText to Markdown.</li>
<li>Reference CVE-2026-45409 for the 3.14 advisory in place of the
initial GHSA identifier.</li>
</ul>
<p>Thanks to Felix Yan, Stan Ulbrych, and metsw24-max for
contributions to this release.</p>
<h2>3.14 (2026-05-10)</h2>
<ul>
<li>Removed opportunity to process long inputs into quadratic
time by rejecting oversize inputs up-front. Closes a bypass
of the CVE-2024-3651 mitigation. [CVE-2026-45409]</li>
</ul>
<p>Thanks to Stan Ulbrych for reporting the issue.</p>
<h2>3.13 (2026-04-22)</h2>
<ul>
<li>Correct classification error for codepoint U+A7F1</li>
</ul>
<h2>3.12 (2026-04-21)</h2>
<ul>
<li>Update to Unicode 17.0.0.</li>
<li>Issue a deprecation warning for the transitional argument.</li>
<li>Added lazy-loading to provide some performance improvements.</li>
<li>Removed vestiges of code related to Python 2 support, including
segmentation of data structures specific to Jython.</li>
</ul>
<p>Thanks to Rodrigo Nogueira for contributions to this release.</p>
<h2>3.11 (2025-10-12)</h2>
<ul>
<li>Update to Unicode 16.0.0, including significant changes to UTS46
processing. As a result of Unicode ending support for it, transitional
processing no longer has an effect and returns the same result.</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/kjd/idna/commit/af30a092e158181d0b35ac66dfa813788126bdd8"><code>af30a09</code></a>
Release 3.15</li>
<li><a
href="https://github.com/kjd/idna/commit/30314d4628744ca14cf2b5820564e5127a9f86f2"><code>30314d4</code></a>
Pre-release 3.15rc0</li>
<li><a
href="https://github.com/kjd/idna/commit/05d4b219aa9eddc47371fcbd2000f0301016f3e9"><code>05d4b21</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/237">#237</a> from
kjd/convert-docs-to-markdown</li>
<li><a
href="https://github.com/kjd/idna/commit/2987fdba1962bbb2358399e0084ba062b98a0bee"><code>2987fdb</code></a>
Convert README and HISTORY from reStructuredText to Markdown</li>
<li><a
href="https://github.com/kjd/idna/commit/59fa8002d514bf4a5ce7b58f67b9ec587d53fa9c"><code>59fa800</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/236">#236</a> from
kjd/dependabot/github_actions/actions-f3e34333ea</li>
<li><a
href="https://github.com/kjd/idna/commit/def69834ced5d4b3c50439d8b99c4c856ec19ca2"><code>def6983</code></a>
Merge branch 'master' into
dependabot/github_actions/actions-f3e34333ea</li>
<li><a
href="https://github.com/kjd/idna/commit/bbd8004a797185d8c56bb555cd5c88fde05e0631"><code>bbd8004</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/234">#234</a> from
StanFromIreland/patch-1</li>
<li><a
href="https://github.com/kjd/idna/commit/edd07c05024344a6ccb517414ccb36683aee99fc"><code>edd07c0</code></a>
Bump github/codeql-action from 3.35.2 to 4.35.2 in the actions
group</li>
<li><a
href="https://github.com/kjd/idna/commit/5557db030c11bdec50d62aa5f631d705d33ba123"><code>5557db0</code></a>
Merge branch 'master' into patch-1</li>
<li><a
href="https://github.com/kjd/idna/commit/f11746cf4981d25123ef7830d3ee60f07de8ae3d"><code>f11746c</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/235">#235</a> from
StanFromIreland/patch-2</li>
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Fixes link failures when referencing a symbol involving a fingerprint
from a different package.
Previously we included the `Namespace`'s `import_id` as part of its
fingerprint, which caused local and imported namespaces to get different
fingerprints. We now store the `import_id` on the `NameScope` instead of
on the `Namespace` inst to avoid this problem.
Also, when we reach a package-level `NameScopeId`, consistently
fingerprint it as a (package name, library name) pair. Previously the
fingerprinting depended on whether it was imported or not, as an
imported `NameScopeId` had a parent scope (the current package). We need
to include the library name here so that private entities with the same
name in different libraries have different fingerprints.
Provide a source location to the member expression used when a thunk
calls a member function. This ends up being used as the point of
instantiation when the return type triggers a template instantiation;
the absence of this location previously caused assertion failures within
clang.
Assisted-by: Gemini via Antigravity
Rearrange the file_test infrastructure so that we can customize the
mapping of file names to command line arguments. Map `module.modulemap`
files to corresponding Clang driver flags. In passing, also clean up the
interface for specifying custom argument replacements so that we don't
build a string map for each file we process, and stop using
`SmallVector::insert`.
Assisted-by: Gemini via Antigravity
The intent is to add visibility into how the fingerprint is computed, so
that fingerprinting issues and mangling collisions can be more readily
understood and fixed.
Assisted-by: Gemini via Antigravity
When a class extends an interface, referring to a member name of the
interface as an unqualified name should refer to the class's
corresponding associated entity value, not to the associated entity
itself. Similarly, in an `impl`, unqualified names of associated
entities should refer to the `impl`'s corresponding value for that
entity.
To support this, we treat `impl`s as `extend`ing their implemented facet
type, and we make lookups into an extended facet type use the `Self`
type of the extending `impl` or `class` if lookup finds an associated
entity. We already did the latter if the extending entity was an
interface; this extends the existing support for these other cases.
Previously, this relied on the subtlety that `-- ` (with the trailing
space) didn't get parsed as a flag. But there is support already for
escaping a leading `-` in a format argument, so use that to make the
code more obviously correct.
Assisted-by: Antigravity with Gemini
First, this makes the Bazel invocations not try to uses curses which
prevents running them with `pre-commit run ... -v` showing the timings
for each check. The curses display overwrote the output.
Second, this fixes the main slowdown I was seeing. Because we passed
_all_ files to the check-build-graph hook and there are large number of
files, pre-commit would run the tool over and over on a subset of the
files. This is especially wasteful as the build graph check already
doesn't do anything with the files, it just checks `//...` on each
invocation. So this just added a (large) constant factor of cost.
Third, this tries to reduce the cost of `fix_cc_deps.py` in the case of
large numbers of files. This still isn't _super_ fast -- but the rest of
the cost is in running the `bazel query` and parsing the output. I tried
switching it to jsonproto and it wasn't any faster. I think this would
need to be in a non-Python language and use `proto` directly to
significantly improve the cost here.
Assisted-by: Antigravity with Gemini
Christopher Di Bella
Dana Jansens
Richard Smith
antangelo
Nicholas Bishop
Chandler CarruthandChristopher Di Bella
dependabot[bot]
DavidLoftus