Commit Graph
4744 Commits
Author SHA1 Message Date
Jon Ross-Perkins 2543d2ea4f Add CoreInterface for consistent tracking of CoreIdentifier interfaces (#6516)
We're going to want to track `Destroy` and some other interfaces in ways
similar to what the C++ logic wants. Rather than having both do their
own comparisons with similar values, this tries to centralize logic.

Note the prior
`context.identifiers().Get(interface.name_id.AsIdentifierId())` is also
obsolete due to #6486, this is just replacing it in a single swoop and
avoiding string comparisons as a consequence.
2025-12-17 23:11:52 +00:00
Jon Ross-Perkins 655932da0b Refactor BuildCustomWitness out to its own file (#6515)
Per request at
https://github.com/carbon-language/carbon-lang/pull/6512#discussion_r2627265838
2025-12-17 21:36:44 +00:00
Dana Jansens 5efed204a2 Make EvalLookupSingleImplWitness shorter (#6517)
This reduces the function size from ~180 to 133. It removes early outs
once we begin the process of doing an impl lookup so that we cache the
result unconditionally at the end. It removes a second fallback call to
look for a C++ witness by tracking additional information about the
`Impl` that was found (if any) and just do the C++ lookup in one place
afterward.
2025-12-17 21:18:24 +00:00
Dana Jansens 7c1798d96d Format impl witness instructions as part of the impl (#6485)
The impl's body block has to end before we make its ImplDecl
instruction, and the witness instructions come later, so they don't end
up in the body block. Currently they just end up in the enclosing (file,
typically, or class) scope block.

Add a new InstBlockId to Impl for holding witness instructions, and
explicitly insert them into that block. Then include those instructions
into the scope of the Impl for naming, and format them into the Impl
right after the body block.

This is based on #6484
2025-12-17 15:46:30 +00:00
Burak Emir 992d435023 Replace unused bindings with anonymous binding in lower/testdata. (#6479)
This updates lower/testdata to use _ instead of proper names, in order
to avoid the "unused binding" warnings from #2022 which are being
implemented. These changes do not depend on the implementation which
should make everything easier to review.

See #6460 with part 1 of the implementation. It was split upon request
in order to make reviewing easier, the original state of the PR was
updating hundreds of test cases.
The PR has thus been split, part 2 including test cases changes can be
viewed at
https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2
... many tests need to be updated, so it seems best to get those tests
out of the way that are not interesting.

These are not all tests in lower/testdata - a few of them are
interesting in the sense that they cannot use '_' because it leads to
failed redeclaration check. This is exactly the scenario described in
#3763 which requires the 'unused' marker. Those are left untouched here
but are updated in
https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2
2025-12-17 15:43:04 +00:00
Burak EmirandDana Jansens fec6ce2f9f Implement "unused pattern bindings" p2022 - parsing (#6460)
This implements proposal #2022, with changes from #3763 and leads
answers on #6448

Detection of unusedness is happening in
~~`toolchain/check/dataflow_analysis.cpp`~~ next PR. See
[here](https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2)
for preview.

~~All test cases with unused bindings were updated in order to avoid
polluting test output.~~

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
2025-12-17 15:40:20 +00:00
Geoff Romer ad7ea755b0 Add Abstract enumerator to InitRepr::Kind (#6513)
This fixes a bug where `CheckFunctionReturnType` could sometimes fail to
diagnose an abstract return type.
v0.0.0-0.nightly.2025.12.17
2025-12-17 00:00:14 +00:00
Richard Smith 2e65d28a16 Support for passing C++ templates as arguments to template template parameters. (#6475)
Allow passing a C++ template as a template template argument to another
C++ template. Does not allow passing a Carbon generic as an argument.

Depends on #6474.
2025-12-16 19:00:49 +00:00
Jon Ross-Perkins 3ae6f96141 Remove IsPackage (#6497)
The work being done by `IsPackage` is more than is needed by callers.
2025-12-16 18:16:45 +00:00
Dana Jansens efec4e4658 Move generic stack operations into handle_impl.cpp (Refactor Impl construction 8/7) (#6484)
Instead of burying operations to pop the generic stack in
`GetOrAddImpl`, we move them up to handle_impl.cpp in `BuildImplDecl`,
which puts them at the same level as other operations on the generic
stack, like `StartGenericDecl` or `FinishGenericDefinition`.

To do so, we split `GetOrAddImpl` into a few pieces:
- `FindImplId` finds an existing Impl that matches the declaration, or
returns a LookupBucketRef and whether an error was diagnosed instead.
- `AddImpl` takes a fully built `Impl`, makes an `ImplId` for it, and
does additional steps for a new `Impl` verifying it and applying
`extend`.
- `AddImplWitnessForDeclaration` constructs the `Impl`'s witness, which
must be done between two generic steps in order to use the generic's
self specific but also add the witness instruction to the generic.

We group the logic to build the initial table in the definition and to
complete it in the definition together in `impl.cpp`. And we save a
lookup into the ImplStore by passing Impl by reference to
`FinishImplWitness`, as we now do for other similar functions in
`impl.h`.

This is based on #6470.
2025-12-16 15:32:56 +00:00
Jon Ross-Perkins 47e551141f Change the package namespace to use the package name (#6495)
Instead of naming the root namespace `package` (because it's accessed by
the `package` keyword), change it to use the current package name. Note,
buried in the checksum changes,
`toolchain/check/testdata/package_expr/fail_not_found.carbon`:

```
-  // CHECK:STDERR: fail_not_found.carbon:[[@LINE+4]]:16: error: member name `x` not found in `package` [MemberNameNotFoundInInstScope]
+  // CHECK:STDERR: fail_not_found.carbon:[[@LINE+4]]:16: error: member name `x` not found in `Main` [MemberNameNotFoundInInstScope]
```

for:

```
  // CHECK:STDERR:   var y: i32 = package.x;
  // CHECK:STDERR:                ^~~~~~~~~
```

I'll leave it to you if you prefer this; the alternative I see is to
just rename `IsCorePackage` to `IsImportedCorePackage`, and/or change it
to a helper that takes a `Context` and does the right thing with
`parse_tree` (which, I need for `Destroy`-related reasons and was my
default approach).
v0.0.0-0.nightly.2025.12.16
2025-12-16 01:33:53 +00:00
Özgür 2a3d0b71bb Reject abstract types in var function parameters (#6499)
### Description
Fixes an issue where the toolchain accepted abstract types in function
parameters declared with `var`.

### Changes
- Implemented a check for abstract types for function parameters with
`var` binding pattern in `HandleAnyBindingPattern`.
- Added a test case to
`toolchain/check/testdata/class/fail_abstract.carbon`.

**Note:** I did not use `AsConcreteType` like used in `case
FullPatternStack::Kind::NameBindingDecl`. Using it enforces type
completion, thus causing valid signatures such as `fn F[var self: Self]`
to fail.

Also the pre-commit checks fail due to a diagnostic name collision with
`toolchain/check/type_completion.cpp`. Should I add a function that just
checks if the type is abstract to share the diagnostic?

Fixes #6402
2025-12-15 20:17:34 +00:00
Jon Ross-Perkins 25f63140e6 Refactor CppWitness as CustomWitness (#6491)
This is in anticipation of using the same construct for all
implementations of `Destroy`, as well as other similar use-cases with
language-defined interfaces.
2025-12-15 19:41:14 +00:00
Richard Smith 6b28213b36 Add interop support for naming and "calling" C++ templates. (#6474)
Expose C++ class templates, variable templates, alias templates, and
concepts as callable values in Carbon, and map calls to them into
template-id formation, mirroring how Carbon generics behave. For now,
only type template parameters are supported; non-type and template
template parameters produce a TODO error.
2025-12-15 17:45:01 +00:00
Richard SmithandJon Ross-Perkins a8eca2ece6 Delay finishing the C++ translation unit until we reach the real EOF. (#6489)
Instead of parsing a complete C++ translation unit and then interacting
with the translation unit further after the fact, delay finishing the
translation unit until we finish the Carbon check phase. This fixes some
issues where we would produce duplicated or incorrect diagnostics at the
end of the C++ translation unit, particularly for unused declarations.
Now we're in control of how we parse the translation unit, also disable
parsing of C++20 modules if the syntax appears within `import Cpp
inline` code.

Keep the same clang parser alive throughout check, and use it instead of
building a new one when parsing macros. This resolves issues where the
translation unit scope was destroyed too early, resulting in unqualified
lookup within macros being unable to find global scope entities.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
v0.0.0-0.nightly.2025.12.15 v0.0.0-0.nightly.2025.12.14 v0.0.0-0.nightly.2025.12.13
2025-12-13 00:56:30 +00:00
josh11bandJosh L 77caf3b9d8 Add Core.PrintStr and a "hello world" example (#6493)
Thanks to @ammaralassal for #6329 which did the heavy lifting to make
this possible!

Co-authored-by: Josh L <josh11b@users.noreply.github.com>
2025-12-12 20:07:05 +00:00
Dana Jansens fbcaf34494 Defer RequireCompleteType to impl definition (Refactor Impl construction 7/7) (#6470)
Explicitly run `RequireCompleteType` for an impl's facet type constraint
in two places:
- For a new `Impl` declaration that is `extend`
- At the start of the `Impl` definition

Stop trying to RequireCompleteType in the definition when constructing
the witness. If we have a rewrite of a name in `.Self`, then we can
construct a full witness, otherwise we defer to the definition.

Now GetOrAddImpl does not need to track `is_definition` anymore, so we
remove a lot of plumbing.

We inline the `AllocateFacetTypeImplWitness` since it has a single
caller and it is just 2 lines, to help improve understanding of the
steps and comments in setting up the impl definition.

Note that this puts the `RequreCompleteType` instruction into the
definition's generic eval block always, avoiding the issue of ensuring
that each generic redecl has the exact same instructions, and forcing
coordination to have `RequireCompleteType` inserted into every
declaration's eval block or none. The result also more closely matches
the design, with the complete type not being required until inside the
definition.

This is part of #6420 which is being split up into a chain of smaller
PRs. It is based on #6469.
v0.0.0-0.nightly.2025.12.12
2025-12-11 23:50:10 +00:00
Dana Jansens 463ba0e1db Clean up helpers for GetOrAddImpl (Refactor Impl construction 5/7 and 6/7) (#6469)
Make the `AssignImplIdInWitness` into a `static` helper function since
it's only used inside `GetOrAddImpl`. Restructure the diagnostic for
unused generic bindings to move more logic into the helper, and out of
`GetOrAddImpl` so that it has more clear steps.

This is part of #6420 which is being split up into a chain of smaller
PRs. It is based on #6468.
2025-12-11 22:22:43 +00:00
Jon Ross-Perkins c0b335b87f Add well-known identifier caching (#6486)
I'm doing this because I figured it'd be an incremental improvement for
all the operator lookups that we do. Even to the extent that we've
discussed witness caching, I think it'll still apply. It does add one
more step to adding new interfaces (before, you'd just write the string,
now you add it to the def file and reference it).

I'll claim it makes GetClangOperatorKind a lot friendlier to read/edit,
nevermind removing the string comparisons. :)
2025-12-11 21:41:47 +00:00
Ammar AlassalandDana Jansens a848ae11e4 Added string indexing (#6329)
Implemented string indexing for Core.string
Handles references or struct values. No runtime checks as per
https://discord.com/channels/655572317891461132/655578254970716160/1431015866270748682
Part of #6270

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
2025-12-11 21:31:31 +00:00
Dana Jansens 35d505a985 Check the orphan rule for impls (#6488)
The orphan rule is defined here:
https://docs.carbon-lang.dev/docs/design/generics/details.html#orphan-rule

**Orphan rule:** Some name from the type structure of an `impl`
declaration must be defined in the same library as the `impl`, that is
some name must be *local*.

Update tests that were running afoul of the orphan rule unintentionally.
Add tests that do violate the rule intentionally and test edge cases.
2025-12-11 19:44:39 +00:00
Dana Jansens 14998d6045 Consolidate error handling behaviour for ApplyExtendImplAs (Refactor Impl construction 4/7) (#6468)
Propagate error state in an `extend impl` declaration out to the
enclosing scope. We can do this generically in `ApplyExtendImplAs` so we
don't have to do it explicitly in other places.

Collapse `DiagnoseExtendImplOutsideClass` into `ApplyExtendImplAs` as it
had only the one caller and is very small, so this simplifies the code,
making `ApplyExtendImplAs` a clear set of diagnostics. And push the
construction of the SpecificConstant down into `ApplyExtendImplAs` so it
is only constructed if it's needed, instead of constructing it and
throwing it away in error cases.

Ensure any error in the declaration results in the witness being an
ErrorInst so the impl will not be used in impl lookup. This simplifies
some branches by combining them into a single if statement.

This is part of #6420 which is being split up into a chain of smaller
PRs. It is based on #6467.
2025-12-11 19:05:17 +00:00
Geoff Romer a0d1e4b809 Handle SpecificImplFunction in GetCallee (#6487)
I need this in a forthcoming PR, to reliably get the `Function` that was
originally used to build a `Call` inst, but even as a stand-alone
change, it seems to nicely improve the textual SemIR.
v0.0.0-0.nightly.2025.12.11
2025-12-11 01:06:16 +00:00
Chandler CarruthandGeoff Romer ff8ce31e1b Factor out C-string argv building and simplify vlogs (#6478)
This extracts the C-string `argv`-like building routine to a more
broadly reusable location. It also sinks the verbose logging logic out
of it and into the relevant runners. In turn, it simplifies the verbose
logging logic significantly.

The biggest functional change is removing the implicit synthesis of a
tool's `-v` verbose flag from the presence of a `vlog` stream. I thought
this would be helpful, but in practice of debugging these layers it has
been more of a hindrance than a help -- I pretty often only want verbose
logging on one side or the other, and we have ways of explicitly passing
a `-v` flag to the underlying tools already. I think my instinct to do
this was just wrong, so rip it out and simplify.

This does add an unused feature -- prepending a prefix of arguments
while building the C-string variant. This isn't used in this PR but will
be used in subsequent PRs and it seemed more disruptive to undo that
logic and then re-do it in a later PR. Let me know if it's too confusing
here.

Assisted-by: Gemini Code Assist

---------

Co-authored-by: Geoff Romer <gromer@google.com>
2025-12-10 22:07:01 +00:00
Dana Jansens 1c3d3e9284 Move forward-decl-only code out to the handler of the forward decl node (Refactor Impl construction 3/7) (#6467)
Rather than run the code for both decl and defn and make it conditional
on not being a definition, put the code in the handler for the
`Parse::ImplDeclId` node, which is handled when there's no definition.
This will help lead us to no longer needing to plumb around
`is_definition` later.

Make some naming consistent to call the reference to an `Impl` as `impl`
instead of sometimes `impl_info`.

This is part of #6420 which is being split up into a chain of smaller
PRs. It is based on #6466.
2025-12-10 21:55:01 +00:00
Richard Smith c4d162e5f5 Switch from clang::ASTUnit to clang::CompilerInstance. (#6483)
This gives us a lot more control over how the compiler is built and
invoked. But no functionality changes are intended in this PR.
2025-12-10 21:54:51 +00:00
Richard Smith 6114df59ee Factor out a Check::CppContext holding C++-specific check state (#6482)
* Move `Sema` access from `CppFile` into `CppContext`.
* Move the mangle context from `SemIR::File` into `CppContext`.
* Move source location mapping state from `Context` into `CppContext`.

Also factor out the `GenerateAst` function that builds the `CppContext`
and `CppFile` into its own file.
2025-12-10 18:55:22 +00:00
Geoff Romer bf45b1cbf5 Refactor function return type representation (#6463)
This separates the return type from the return pattern, and replaces the
return pattern with a block of return patterns. This is a step toward
support for `ref` returns (where there's no corresponding return
pattern) and compund-form returns (where there may be multiple return
patterns).
2025-12-10 18:34:23 +00:00
Jon Ross-Perkins 77918d023b Make symbolic local bindings a TODO (#6449)
Per discussion, makes all symbolic local bindings a TODO. We should
implement them more correctly before making them operable. Right now
things partially work, but because constants behave mostly right in the
symbolic situations under tests. More broadly, it has incorrect behavior
and crashes, thus the TODO.

This converts most tests using `let` to instead using parameters, but
leaves some behind where a conversion either didn't make sense (e.g. in
`let` tests) or a conversion was unclear to me (multi-layer `let`, which
relies more on planned behavior that seems more bespoke to a local
`let`).

In let's `fail_generic.carbon`, there's a "// TODO: Should this be
valid?" that I'm removing because my understanding is the code in
question should be valid (the file is merged into let's
`generic.carbon`).

Refactoring `HandleAnyBindingPattern` a little because there's a TODO to
make it shorter, and it seemed like a reasonable drive-by change (let me
know if you think there's more I should do, or if I should remove said
TODO even though it's still a bit long).

Fixes #5982
2025-12-10 18:11:58 +00:00
Jon Ross-Perkins efbebdb7b3 Remove unused code paths in EndAssociatedConstantDeclRegion (#6481)
I think these are obsolete, at least as far as I can tell. The former
appears tested (adding to be sure), the latter looks like it may no
longer occur.
v0.0.0-0.nightly.2025.12.10
2025-12-09 23:21:21 +00:00
Dana JansensandJon Ross-Perkins 3c8417947b Propagate errors in extend require up to the containing scope (#6480)
Just as names from an `extend` scope get included in the containing
scope, so do errors. Apply this logic to `extend require impls`,
propagating any errors up.

This is based on #6465.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2025-12-09 22:04:17 +00:00
Dana Jansens b07b8a122a Make StartImplDecl into a more explicit GetOrAddImpl (Refactor Impl construction 2/7) (#6466)
The GetOrAddImpl operation looks for an existing `Impl` with a matching
declaration and returns its ImplId, or finished the construction of a
new `Impl`, adds it to the store and returns a fresh `ImplId`.

This makes the case of reusing an existing `Impl` into a short
early-out, demonstrating more clearly that we are reusing existing work,
and avoiding duplicate work such as checking for diagnostics that would
have already been checked in the previous (matching) declaration.

The `ExtendImpl` helper is renamed to be more explicit about its
behaviour, as `ApplyExtendImplAs`, and it constructs the data it needs
from the `Impl` and the `extend_node_id`, eliminating the need for a
`ExtendImplDecl` struct.

This is part of #6420 which is being split up into a chain of smaller
PRs. It is based on #6465.
2025-12-09 22:02:50 +00:00
Richard Smith c7cd24e1b2 Support for calling C++ destructors. (#6453)
Synthesize an impl of `Destroy` for C++ classes in response to impl
lookup.
2025-12-09 21:03:27 +00:00
Dana Jansens 2d38978756 Diagnose explicit Self in extend in the parse node handler (Refactor Impl construction 1/7) (#6465)
We encode the state of looking that the parent scope is a Class into a
type so that we can avoid extra lookups. Then use that in refactoring
where diagnostics are generated for an explicit `Self` in an `extend
impl` declaration.

We add tests that we don't double-diagnose the Self type when it's
already an error, and make the behaviour of `extend require` match that
of `extend impl as`.

This avoids some fragile/complex parse-node lookups (such as
`context.parse_tree_and_subtrees().ExtractAs<Parse::ImplTypeAs>`) by
using the parse node at the point where we are handling it instead of
much later.

This is part of #6420 which is being split up into a chain of smaller
PRs.
2025-12-09 20:38:50 +00:00
Richard Smith 154e4012c4 Include the parent scope when fingerprinting an entity name. (#6473)
This is a prerequisite for support for interop with C++ template names.
No behavior change here, except that it sadly changes the fingerprinting
for a lot of tests.
v0.0.0-0.nightly.2025.12.09
2025-12-08 15:31:13 +00:00
dependabot[bot] d5bddcb3f1 Bump urllib3 from 2.5.0 to 2.6.0 in /github_tools in the pip group across 1 directory (#6471)
Bumps the pip group with 1 update in the /github_tools directory:
[urllib3](https://github.com/urllib3/urllib3).

Updates `urllib3` from 2.5.0 to 2.6.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/releases">urllib3's
releases</a>.</em></p>
<blockquote>
<h2>2.6.0</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a
href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3
is raising ~$40,000 USD</a> to release HTTP/2 support and ensure
long-term sustainable maintenance of the project after a sharp decline
in financial support. If your company or organization uses Python and
would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and
thousands of other projects <a
href="https://opencollective.com/urllib3">please consider contributing
financially</a> to ensure HTTP/2 support is developed sustainably and
maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Security</h2>
<ul>
<li>Fixed a security issue where streaming API could improperly handle
highly compressed HTTP content (&quot;decompression bombs&quot;) leading
to excessive resource consumption even when a small amount of data was
requested. Reading small chunks of compressed data is safer and much
more efficient now. (CVE-2025-66471 reported by <a
href="https://github.com/Cycloctane"><code>@​Cycloctane</code></a>, 8.9
High, GHSA-2xpw-w6gg-jr37)</li>
<li>Fixed a security issue where an attacker could compose an HTTP
response with virtually unlimited links in the
<code>Content-Encoding</code> header, potentially leading to a denial of
service (DoS) attack by exhausting system resources during decoding. The
number of allowed chained encodings is now limited to 5. (CVE-2025-66418
reported by <a
href="https://github.com/illia-v"><code>@​illia-v</code></a>, 8.9 High,
GHSA-gm62-xv2j-4w53)</li>
</ul>
<blockquote>
<p>[!IMPORTANT]</p>
<ul>
<li>If urllib3 is not installed with the optional
<code>urllib3[brotli]</code> extra, but your environment contains a
Brotli/brotlicffi/brotlipy package anyway, make sure to upgrade it to at
least Brotli 1.2.0 or brotlicffi 1.2.0.0 to benefit from the security
fixes and avoid warnings. Prefer using <code>urllib3[brotli]</code> to
install a compatible Brotli package automatically.</li>
<li>If you use custom decompressors, please make sure to update them to
respect the changed API of
<code>urllib3.response.ContentDecoder</code>.</li>
</ul>
</blockquote>
<h2>Features</h2>
<ul>
<li>Enabled retrieval, deletion, and membership testing in
<code>HTTPHeaderDict</code> using bytes keys. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3653">#3653</a>)</li>
<li>Added host and port information to string representations of
<code>HTTPConnection</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3666">#3666</a>)</li>
<li>Added support for Python 3.14 free-threading builds explicitly. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3696">#3696</a>)</li>
</ul>
<h2>Removals</h2>
<ul>
<li>Removed the <code>HTTPResponse.getheaders()</code> method in favor
of <code>HTTPResponse.headers</code>. Removed the
<code>HTTPResponse.getheader(name, default)</code> method in favor of
<code>HTTPResponse.headers.get(name, default)</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3622">#3622</a>)</li>
</ul>
<h2>Bugfixes</h2>
<ul>
<li>Fixed redirect handling in <code>urllib3.PoolManager</code> when an
integer is passed for the retries parameter. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3649">#3649</a>)</li>
<li>Fixed <code>HTTPConnectionPool</code> when used in Emscripten with
no explicit port. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3664">#3664</a>)</li>
<li>Fixed handling of <code>SSLKEYLOGFILE</code> with expandable
variables. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3700">#3700</a>)</li>
</ul>
<h2>Misc</h2>
<ul>
<li>Changed the <code>zstd</code> extra to install
<code>backports.zstd</code> instead of <code>zstandard</code> on Python
3.13 and before. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3693">#3693</a>)</li>
<li>Improved the performance of content decoding by optimizing
<code>BytesQueueBuffer</code> class. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3710">#3710</a>)</li>
<li>Allowed building the urllib3 package with newer setuptools-scm v9.x.
(<a
href="https://redirect.github.com/urllib3/urllib3/issues/3652">#3652</a>)</li>
<li>Ensured successful urllib3 builds by setting Hatchling requirement
to ≥ 1.27.0. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3638">#3638</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/blob/main/CHANGES.rst">urllib3's
changelog</a>.</em></p>
<blockquote>
<h1>2.6.0 (2025-12-05)</h1>
<h2>Security</h2>
<ul>
<li>Fixed a security issue where streaming API could improperly handle
highly
compressed HTTP content (&quot;decompression bombs&quot;) leading to
excessive resource
consumption even when a small amount of data was requested. Reading
small
chunks of compressed data is safer and much more efficient now.
(<code>GHSA-2xpw-w6gg-jr37
&lt;https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37&gt;</code>__)</li>
<li>Fixed a security issue where an attacker could compose an HTTP
response with
virtually unlimited links in the <code>Content-Encoding</code> header,
potentially
leading to a denial of service (DoS) attack by exhausting system
resources
during decoding. The number of allowed chained encodings is now limited
to 5.
(<code>GHSA-gm62-xv2j-4w53
&lt;https://github.com/urllib3/urllib3/security/advisories/GHSA-gm62-xv2j-4w53&gt;</code>__)</li>
</ul>
<p>.. caution::</p>
<ul>
<li>
<p>If urllib3 is not installed with the optional
<code>urllib3[brotli]</code> extra, but
your environment contains a Brotli/brotlicffi/brotlipy package anyway,
make
sure to upgrade it to at least Brotli 1.2.0 or brotlicffi 1.2.0.0 to
benefit from the security fixes and avoid warnings. Prefer using
<code>urllib3[brotli]</code> to install a compatible Brotli package
automatically.</p>
</li>
<li>
<p>If you use custom decompressors, please make sure to update them to
respect the changed API of
<code>urllib3.response.ContentDecoder</code>.</p>
</li>
</ul>
<h2>Features</h2>
<ul>
<li>Enabled retrieval, deletion, and membership testing in
<code>HTTPHeaderDict</code> using bytes keys.
(<code>[#3653](https://github.com/urllib3/urllib3/issues/3653)
&lt;https://github.com/urllib3/urllib3/issues/3653&gt;</code>__)</li>
<li>Added host and port information to string representations of
<code>HTTPConnection</code>.
(<code>[#3666](https://github.com/urllib3/urllib3/issues/3666)
&lt;https://github.com/urllib3/urllib3/issues/3666&gt;</code>__)</li>
<li>Added support for Python 3.14 free-threading builds explicitly.
(<code>[#3696](https://github.com/urllib3/urllib3/issues/3696)
&lt;https://github.com/urllib3/urllib3/issues/3696&gt;</code>__)</li>
</ul>
<h2>Removals</h2>
<ul>
<li>Removed the <code>HTTPResponse.getheaders()</code> method in favor
of <code>HTTPResponse.headers</code>.
Removed the <code>HTTPResponse.getheader(name, default)</code> method in
favor of <code>HTTPResponse.headers.get(name, default)</code>.
(<code>[#3622](https://github.com/urllib3/urllib3/issues/3622)
&lt;https://github.com/urllib3/urllib3/issues/3622&gt;</code>__)</li>
</ul>
<h2>Bugfixes</h2>
<ul>
<li>Fixed redirect handling in <code>urllib3.PoolManager</code> when an
integer is passed
for the retries parameter.
(<code>[#3649](https://github.com/urllib3/urllib3/issues/3649)
&lt;https://github.com/urllib3/urllib3/issues/3649&gt;</code>__)</li>
<li>Fixed <code>HTTPConnectionPool</code> when used in Emscripten with
no explicit port.
(<code>[#3664](https://github.com/urllib3/urllib3/issues/3664)
&lt;https://github.com/urllib3/urllib3/issues/3664&gt;</code>__)</li>
<li>Fixed handling of <code>SSLKEYLOGFILE</code> with expandable
variables.
(<code>[#3700](https://github.com/urllib3/urllib3/issues/3700)
&lt;https://github.com/urllib3/urllib3/issues/3700&gt;</code>__)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/urllib3/urllib3/commit/720f484b605f18887a48eef448d0084e2b76902d"><code>720f484</code></a>
Release 2.6.0</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/24d7b67eac89f94e11003424bcf0d8f7b72222a8"><code>24d7b67</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/c19571de34c47de3a766541b041637ba5f716ed7"><code>c19571d</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/816fcf04528bc0f89672e13398eb813dcc892490"><code>816fcf0</code></a>
Bump actions/setup-python from 6.0.0 to 6.1.0 (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3725">#3725</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/18af0a10efc4c99dd028f7ad5a461470b9a8b0fd"><code>18af0a1</code></a>
Improve speed of <code>BytesQueueBuffer.get()</code> by using memoryview
(<a
href="https://redirect.github.com/urllib3/urllib3/issues/3711">#3711</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/1f6abac3e6d426c3939b8a17cf4afa099e691ab2"><code>1f6abac</code></a>
Bump versions of pre-commit hooks (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3716">#3716</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/1c8fbf787b8e6ed151842c5d6874c9d5bdbf1d0b"><code>1c8fbf7</code></a>
Bump actions/checkout from 5.0.0 to 6.0.0 (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3722">#3722</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/7784b9eee95b7c90802c02b111e98df70259ae4f"><code>7784b9e</code></a>
Add Python 3.15 to CI (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3717">#3717</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/0241c9e7286d3008e3cce18effc13b40dc633385"><code>0241c9e</code></a>
Updated docs to reflect change in optional zstd dependency from
<code>zstandard</code> t...</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/7afcabb6489d9a8ea95a40e5afcb46463af17351"><code>7afcabb</code></a>
Expand environment variable of SSLKEYLOGFILE (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3705">#3705</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/urllib3/urllib3/compare/2.5.0...2.6.0">compare
view</a></li>
</ul>
</details>
<br />


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v0.0.0-0.nightly.2025.12.08 v0.0.0-0.nightly.2025.12.07
2025-12-06 08:05:24 +00:00
Richard Smith 7fd62ff58d Stop using ImplWitness[Table] for a C++ synthesized witness. (#6451)
Add a `CppWitness` and use it instead of using `ImplWitness` with an
`ImplId` and `SpecificId` of `None`. This witness can be substantially
simpler because we never need a `SpecificId`.
v0.0.0-0.nightly.2025.12.06
2025-12-05 21:07:07 +00:00
Richard SmithandJon Ross-Perkins d208e950c7 Encapsulate clang::ASTUnit in SemIR::CppFile. (#6459)
This intends to avoid proliferation of dependencies on the exact API of
`clang::ASTUnit`, and would enable us to more easily switch to a
different approach that gives us more control over the construction of
the Clang AST.

Also remove some unnecessary tracking of the `CppFile` and instead
always retrieve it from the `SemIR::File`.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
v0.0.0-0.nightly.2025.12.05
2025-12-04 21:05:40 +00:00
Dana Jansens 78025fed70 Document the relationship of AddCanonicalWitnessesBlock to IdentifiedFacetType (#6461)
The ordering of FacetTypeInfo is not important to the canonical ordering
of witnesses. The order that must match is that of the
IdentifiedFacetType::required_interfaces.
2025-12-04 17:49:30 +00:00
dependabot[bot] e462f430db Bump the npm_and_yarn group across 1 directory with 1 update (#6462)
Bumps the npm_and_yarn group with 1 update in the /utils/vscode
directory: [jws](https://github.com/brianloveswords/node-jws).

Updates `jws` from 3.2.2 to 3.2.3
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/brianloveswords/node-jws/releases">jws's
releases</a>.</em></p>
<blockquote>
<h2>v3.2.3</h2>
<h3>Changed</h3>
<ul>
<li>Fix advisory GHSA-869p-cjfg-cm3x: createSign and createVerify now
require
that a non empty secret is provided (via opts.secret, opts.privateKey or
opts.key)
when using HMAC algorithms.</li>
<li>Upgrading JWA version to 1.4.2, addressing a compatibility issue for
Node &gt;= 25.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/auth0/node-jws/blob/master/CHANGELOG.md">jws's
changelog</a>.</em></p>
<blockquote>
<h2>[3.2.3]</h2>
<h3>Changed</h3>
<ul>
<li>Fix advisory GHSA-869p-cjfg-cm3x: createSign and createVerify now
require
that a non empty secret is provided (via opts.secret, opts.privateKey or
opts.key)
when using HMAC algorithms.</li>
<li>Upgrading JWA version to 1.4.2, adressing a compatibility issue for
Node &gt;= 25.</li>
</ul>
<h2>[3.0.0]</h2>
<h3>Changed</h3>
<ul>
<li><strong>BREAKING</strong>: <code>jwt.verify</code> now requires an
<code>algorithm</code> parameter, and
<code>jws.createVerify</code> requires an <code>algorithm</code> option.
The <code>&quot;alg&quot;</code> field
signature headers is ignored. This mitigates a critical security flaw
in the library which would allow an attacker to generate signatures with
arbitrary contents that would be accepted by <code>jwt.verify</code>.
See
<a
href="https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/">https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/</a>
for details.</li>
</ul>
<h2><a
href="https://github.com/brianloveswords/node-jws/compare/v1.0.1...v2.0.0">2.0.0</a>
- 2015-01-30</h2>
<h3>Changed</h3>
<ul>
<li>
<p><strong>BREAKING</strong>: Default payload encoding changed from
<code>binary</code> to
<code>utf8</code>. <code>utf8</code> is a is a more sensible default
than <code>binary</code> because
many payloads, as far as I can tell, will contain user-facing
strings that could be in any language. (<!-- raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/6b6de48">6b6de48</a><!--
raw HTML omitted -->)</p>
</li>
<li>
<p>Code reorganization, thanks <a
href="https://github.com/fearphage"><code>@​fearphage</code></a>! (<!--
raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/7880050">7880050</a><!--
raw HTML omitted -->)</p>
</li>
</ul>
<h3>Added</h3>
<ul>
<li>Option in all relevant methods for <code>encoding</code>. For those
few users
that might be depending on a <code>binary</code> encoding of the
messages, this
is for them. (<!-- raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/6b6de48">6b6de48</a><!--
raw HTML omitted -->)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/auth0/node-jws/commit/4f6e73f24df42f07d632dec6431ade8eda8d11a6"><code>4f6e73f</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/auth0/node-jws/commit/bd0fea57f35a97b6749a632b19ae5100d6d35729"><code>bd0fea5</code></a>
version 3.2.3</li>
<li><a
href="https://github.com/auth0/node-jws/commit/7c3b4b411004c206af8901fa3f8e644127bbf8d9"><code>7c3b4b4</code></a>
Enhance tests for HMAC streaming sign and verify</li>
<li><a
href="https://github.com/auth0/node-jws/commit/a9b8ed999de8f8fff486ac9167514577a0fae323"><code>a9b8ed9</code></a>
Improve secretOrKey initialization in VerifyStream</li>
<li><a
href="https://github.com/auth0/node-jws/commit/6707fde62cbae465a7f11e52760fb994dbc0e0dc"><code>6707fde</code></a>
Improve secret handling in SignStream</li>
<li>See full diff in <a
href="https://github.com/brianloveswords/node-jws/compare/v3.2.2...v3.2.3">compare
view</a></li>
</ul>
</details>
<details>
<summary>Maintainer changes</summary>
<p>This version was pushed to npm by <a
href="https://www.npmjs.com/~julien.wollscheid">julien.wollscheid</a>, a
new releaser for jws since your current version.</p>
</details>
<br />

Updates `jws` from 4.0.0 to 4.0.1
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/brianloveswords/node-jws/releases">jws's
releases</a>.</em></p>
<blockquote>
<h2>v3.2.3</h2>
<h3>Changed</h3>
<ul>
<li>Fix advisory GHSA-869p-cjfg-cm3x: createSign and createVerify now
require
that a non empty secret is provided (via opts.secret, opts.privateKey or
opts.key)
when using HMAC algorithms.</li>
<li>Upgrading JWA version to 1.4.2, addressing a compatibility issue for
Node &gt;= 25.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/auth0/node-jws/blob/master/CHANGELOG.md">jws's
changelog</a>.</em></p>
<blockquote>
<h2>[3.2.3]</h2>
<h3>Changed</h3>
<ul>
<li>Fix advisory GHSA-869p-cjfg-cm3x: createSign and createVerify now
require
that a non empty secret is provided (via opts.secret, opts.privateKey or
opts.key)
when using HMAC algorithms.</li>
<li>Upgrading JWA version to 1.4.2, adressing a compatibility issue for
Node &gt;= 25.</li>
</ul>
<h2>[3.0.0]</h2>
<h3>Changed</h3>
<ul>
<li><strong>BREAKING</strong>: <code>jwt.verify</code> now requires an
<code>algorithm</code> parameter, and
<code>jws.createVerify</code> requires an <code>algorithm</code> option.
The <code>&quot;alg&quot;</code> field
signature headers is ignored. This mitigates a critical security flaw
in the library which would allow an attacker to generate signatures with
arbitrary contents that would be accepted by <code>jwt.verify</code>.
See
<a
href="https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/">https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/</a>
for details.</li>
</ul>
<h2><a
href="https://github.com/brianloveswords/node-jws/compare/v1.0.1...v2.0.0">2.0.0</a>
- 2015-01-30</h2>
<h3>Changed</h3>
<ul>
<li>
<p><strong>BREAKING</strong>: Default payload encoding changed from
<code>binary</code> to
<code>utf8</code>. <code>utf8</code> is a is a more sensible default
than <code>binary</code> because
many payloads, as far as I can tell, will contain user-facing
strings that could be in any language. (<!-- raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/6b6de48">6b6de48</a><!--
raw HTML omitted -->)</p>
</li>
<li>
<p>Code reorganization, thanks <a
href="https://github.com/fearphage"><code>@​fearphage</code></a>! (<!--
raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/7880050">7880050</a><!--
raw HTML omitted -->)</p>
</li>
</ul>
<h3>Added</h3>
<ul>
<li>Option in all relevant methods for <code>encoding</code>. For those
few users
that might be depending on a <code>binary</code> encoding of the
messages, this
is for them. (<!-- raw HTML omitted --><a
href="https://github.com/brianloveswords/node-jws/commit/6b6de48">6b6de48</a><!--
raw HTML omitted -->)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/auth0/node-jws/commit/4f6e73f24df42f07d632dec6431ade8eda8d11a6"><code>4f6e73f</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/auth0/node-jws/commit/bd0fea57f35a97b6749a632b19ae5100d6d35729"><code>bd0fea5</code></a>
version 3.2.3</li>
<li><a
href="https://github.com/auth0/node-jws/commit/7c3b4b411004c206af8901fa3f8e644127bbf8d9"><code>7c3b4b4</code></a>
Enhance tests for HMAC streaming sign and verify</li>
<li><a
href="https://github.com/auth0/node-jws/commit/a9b8ed999de8f8fff486ac9167514577a0fae323"><code>a9b8ed9</code></a>
Improve secretOrKey initialization in VerifyStream</li>
<li><a
href="https://github.com/auth0/node-jws/commit/6707fde62cbae465a7f11e52760fb994dbc0e0dc"><code>6707fde</code></a>
Improve secret handling in SignStream</li>
<li>See full diff in <a
href="https://github.com/brianloveswords/node-jws/compare/v3.2.2...v3.2.3">compare
view</a></li>
</ul>
</details>
<details>
<summary>Maintainer changes</summary>
<p>This version was pushed to npm by <a
href="https://www.npmjs.com/~julien.wollscheid">julien.wollscheid</a>, a
new releaser for jws since your current version.</p>
</details>
<br />


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2025-12-04 17:43:08 +00:00
Jon Ross-Perkins 103c49a763 Canonicalize imported witness blocks on FacetValue (#6458)
The test has a more complete explanation of this; witnesses on the
FacetValue must have a canonical ordering.
v0.0.0-0.nightly.2025.12.04
2025-12-04 00:05:24 +00:00
f000194d8b Make a couple of parts of our infrastructure more robust. (#6455)
Don't CHECK-fail when trying to format invalid SemIR with an ImplWitness
whose table_id isn't an ImplWitnessTable. We use SemIR formatting as a
debugging aid, so it's good for it to be robust even in the presence of
invalid SemIR.

Don't crash if a typed instruction has no type_id field and has a
constant kind of Always. We don't have any instructions like that at the
moment.

These caused problems while working on #6451, and while I ended up not
needing either fix for that PR, they both seem like they may be worth
keeping to save some trouble for the next person who hits these.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
2025-12-03 19:24:39 +00:00
Chandler Carruth 5d0d443c98 Move the :install_paths library to //toolchain/base (#6457)
Previously this was kept in `//toolchain/install` so it would be near to
the code that actually defines the installation layout. However, that
creates somewhat unfortunate dependency cycles between
`//toolchain/install` and other directories. Exacerbating this, a
subsequent PR is likely to add dependencies on it from
`//toolchain/base` itself that suggests that is the correct layering.

This PR just moves the code mechanically with as few other edits as
possible.
2025-12-03 17:14:34 +00:00
Ivana Ivanovska 4ddff65e8e Add support for macros pointing to a constexpr integer (#6441)
Similarly to the enums, these are for the moment only available when
referenced with a global scope “::”. Only integer constexpr are
available for now.

Part of #6303
2025-12-03 15:31:37 +00:00
Ivana Ivanovska a2821be1be Dump SemIR for all passing macros tests (#6454)
Some of the macros tests were not printing the SemIR. Printing it can
help spot issues (as in PR #6440), so added that now for all passing
tests.

Part of #6303
2025-12-03 12:28:32 +00:00
Richard Smith c77eebd15e Cache final impl lookup results. (#6452)
If an impl lookup finds a final result, cache that and reuse it if we
perform the same lookup later.

In addition to reducing repeated work, this allows us to produce the
same result for repeated lookups that find a C++ operator. This isn't a
great solution to that problem, as it's not clear how to extend it to
behave correctly across import, but we don't have a solution for that
for C++ interop in general.
v0.0.0-0.nightly.2025.12.03
2025-12-02 22:51:25 +00:00
Dana Jansens e5c94b193d Use the new IsFacetTypeOrError function (#6438)
It is introduced in #6434
2025-12-02 22:33:55 +00:00
Dana Jansens e32190a228 Stringify specifics of named constraints (#6444) 2025-12-02 19:31:13 +00:00
Dana Jansens 73e6994d44 Add a diagnostic note for errors during identifying facet types (#6445)
Errors that occur while constructing a specific should be tied back to
the facet type being identified. We don't have an InstId for the facet
type during identify, so provide the means to Stringify a FacetTypeId.

Depends on https://github.com/carbon-language/carbon-lang/pull/6435
2025-12-02 17:21:53 +00:00
372f632d9d Implement support for copying C++ classes. (#6434)
When performing impl lookup for `Core.Copy` for a C++ class type, look
for a copy constructor. If we find one, synthesize an impl witness that
calls the constructor.

This adds initial support for impl lookup to delegate to the C++ interop
logic for queries involving C++ types. For now, we don't implement the
rules from #6166 that compare a synthesized type structure for the C++
impl against the best Carbon type structure, but the framework for
building that support is established here.

Currently there is no caching of the lookup here, and we build unique
`ImplWitnessTable`s for each lookup, which leads to each impl lookup
producing a distinct facet value. This results in some errors in generic
contexts; this will be addressed in follow-up changes. This PR aims only
to support the non-generic case.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
2025-12-02 02:52:23 +00:00