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Rust: Change canonical paths for trait items by hvitved · Pull Request #22376 · github/codeql · GitHub

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Rust: Change canonical paths for trait items #22376

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hvitved merged 4 commits into from
Aug 20, 2026
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Rust: Change canonical paths for trait items #22376

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8a9ef4c
Rust: Change canonical paths for trait items
hvitved Aug 19, 2026
2a7c932
Rust: Update trait item canonical path references
hvitved Aug 19, 2026
f902541
Rust: Document trait item canonical path change
hvitved Aug 19, 2026
4f48b45
Potential fix for pull request finding
hvitved Aug 19, 2026
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6 changes: 3 additions & 3 deletions docs/codeql/codeql-language-guides/customizing-library-models-for-rust.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -74,7 +74,7 @@ Canonical paths take the following forms:
- **Free functions**: ``crate::module::function``, for example ``std::env::var`` or ``std::fs::read_to_string``.
- **Inherent methods**: ``<Type>::method``, for example ``<std::fs::File>::open``.
- **Trait methods with a concrete type**: ``<Type as Trait>::method``, for example ``<std::fs::File as std::io::Read>::read_to_end``.
- **Trait methods with a wildcard type**: ``<_ as Trait>::method``, for example ``<_ as core::clone::Clone>::clone``. This form matches any type that implements the trait and is useful for modeling broadly applicable trait methods. For a type that has a specific model (<Type as Trait>::method), that model will take precedence over the trait model.
- **Trait methods**: ``Trait::method``, for example ``core::clone::Clone::clone``. This form matches any type that implements the trait and is useful for modeling broadly applicable trait methods. For a type that has a specific model (``<Type as Trait>::method``), that model will take precedence over the trait model.

Examples of custom model definitions
-------------------------------------
Expand Down Expand Up @@ -270,10 +270,10 @@ We need to add tuples to the ``summaryModel(path, input, output, kind, provenanc
pack: codeql/rust-all
extensible: summaryModel
data:
- ["<_ as core::iter::traits::iterator::Iterator>::map", "Argument[self].Element", "Argument[0].Parameter[0]", "value", "manual"]
- ["core::iter::traits::iterator::Iterator::map", "Argument[self].Element", "Argument[0].Parameter[0]", "value", "manual"]


- The first value ``<_ as core::iter::traits::iterator::Iterator>::map`` is the canonical path. The ``<_ as Trait>::method`` form uses a wildcard type (``_``) to match any type that implements the ``Iterator`` trait.
- The first value ``core::iter::traits::iterator::Iterator::map`` is the canonical path. The ``Trait::method`` form matches any type that implements the ``Iterator`` trait.
- The second value ``Argument[self].Element`` is the access path to the input — the elements of the iterator (the receiver).
- The third value ``Argument[0].Parameter[0]`` is the access path to the output:

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6 changes: 6 additions & 0 deletions rust/ql/lib/change-notes/2026-08-19-trait-canonical-paths.md
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@@ -0,0 +1,6 @@
---
category: minorAnalysis
---
* Canonical paths for Rust trait items now use the format `crate::Trait::item` instead of
`<_ as crate::Trait>::item`. Custom data extension models that reference trait items
must be updated to use the new format.
2 changes: 1 addition & 1 deletion rust/ql/lib/codeql/rust/dataflow/internal/DataFlowImpl.qll
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Expand Up @@ -357,7 +357,7 @@ private module Aliases {
*
* However, this would require support for [generalized reverse flow][1], which
* is not yet implemented, so instead we simulate reverse flow where it would
* have applied via the model for `<_ as core::ops::index::IndexMut>::index_mut`.
* have applied via the model for `core::ops::index::IndexMut::index_mut`.
*
* The same is the case for compound assignments like `a[i] += rhs`, which are
* treated as `(*a.index_mut(i)).add_assign(rhs)`.
Expand Down
4 changes: 2 additions & 2 deletions rust/ql/lib/codeql/rust/frameworks/asyncstd/io.model.yml
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Expand Up @@ -3,5 +3,5 @@ extensions:
pack: codeql/rust-all
extensible: summaryModel
data:
- ["<_ as async_std::io::read::ReadExt>::read", "Argument[self]", "Argument[0].Reference", "taint", "manual"]
- ["<_ as async_std::io::read::ReadExt>::read", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["async_std::io::read::ReadExt::read", "Argument[self]", "Argument[0].Reference", "taint", "manual"]
- ["async_std::io::read::ReadExt::read", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
16 changes: 8 additions & 8 deletions rust/ql/lib/codeql/rust/frameworks/futures.model.yml
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Expand Up @@ -5,11 +5,11 @@ extensions:
data:
- ["futures_executor::local_pool::block_on", "Argument[0]", "ReturnValue", "value", "manual"]
- ["<futures_util::io::buf_reader::BufReader>::new", "Argument[0]", "ReturnValue", "taint", "manual"]
- ["<_ as futures_util::io::AsyncReadExt>::read", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["<_ as futures_util::io::AsyncReadExt>::read_to_end", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["<_ as futures_util::io::AsyncBufReadExt>::read_line", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["<_ as futures_util::io::AsyncBufReadExt>::read_until", "Argument[self].Reference", "Argument[1].Reference", "taint", "manual"]
- ["<_ as futures_util::io::AsyncBufReadExt>::fill_buf", "Argument[self].Reference", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "taint", "manual"]
- ["<_ as futures_util::io::AsyncBufReadExt>::lines", "Argument[self]", "ReturnValue", "taint", "manual"]
- ["<_ as futures_io::if_std::AsyncBufRead>::poll_fill_buf", "Argument[self].Reference", "ReturnValue.Field[core::task::poll::Poll::Ready(0)].Field[core::result::Result::Ok(0)]", "taint", "manual"]
- ["<_ as futures_io::if_std::AsyncRead>::poll_read", "Argument[self].Reference", "Argument[1].Reference", "taint", "manual"]
- ["futures_util::io::AsyncReadExt::read", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["futures_util::io::AsyncReadExt::read_to_end", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["futures_util::io::AsyncBufReadExt::read_line", "Argument[self].Reference", "Argument[0].Reference", "taint", "manual"]
- ["futures_util::io::AsyncBufReadExt::read_until", "Argument[self].Reference", "Argument[1].Reference", "taint", "manual"]
- ["futures_util::io::AsyncBufReadExt::fill_buf", "Argument[self].Reference", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "taint", "manual"]
- ["futures_util::io::AsyncBufReadExt::lines", "Argument[self]", "ReturnValue", "taint", "manual"]
- ["futures_io::if_std::AsyncBufRead::poll_fill_buf", "Argument[self].Reference", "ReturnValue.Field[core::task::poll::Poll::Ready(0)].Field[core::result::Result::Ok(0)]", "taint", "manual"]
- ["futures_io::if_std::AsyncRead::poll_read", "Argument[self].Reference", "Argument[1].Reference", "taint", "manual"]
40 changes: 20 additions & 20 deletions rust/ql/lib/codeql/rust/frameworks/mysql-async.model.yml
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Expand Up @@ -3,28 +3,28 @@ extensions:
pack: codeql/rust-all
extensible: sinkModel
data:
- ["<_ as mysql_async::queryable::Queryable>::query", "Argument[0]", "sql-injection", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_drop", "Argument[0]", "sql-injection", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_first", "Argument[0]", "sql-injection", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_fold", "Argument[0]", "sql-injection", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_stream", "Argument[0]", "sql-injection", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_map", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query_drop", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query_first", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query_fold", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query_stream", "Argument[0]", "sql-injection", "manual"]
- ["mysql_async::queryable::Queryable::query_map", "Argument[0]", "sql-injection", "manual"]
- ["<mysql_async::conn::Conn as mysql_async::queryable::Queryable>::query_iter", "Argument[0]", "sql-injection", "manual"]
- ["<mysql_async::conn::Conn as mysql_async::queryable::Queryable>::prep", "Argument[0]", "sql-injection", "manual"]
- addsTo:
pack: codeql/rust-all
extensible: sourceModel
data:
- ["<_ as mysql_async::queryable::Queryable>::query", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_first", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Field[core::option::Option::Some(0)]", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec_first", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Field[core::option::Option::Some(0)]", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_fold", "Argument[2].Parameter[1]", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec_fold", "Argument[3].Parameter[1]", "database", "manual"]
- ["mysql_async::queryable::Queryable::query", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["mysql_async::queryable::Queryable::exec", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["mysql_async::queryable::Queryable::query_first", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Field[core::option::Option::Some(0)]", "database", "manual"]
- ["mysql_async::queryable::Queryable::exec_first", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Field[core::option::Option::Some(0)]", "database", "manual"]
- ["mysql_async::queryable::Queryable::query_fold", "Argument[2].Parameter[1]", "database", "manual"]
- ["mysql_async::queryable::Queryable::exec_fold", "Argument[3].Parameter[1]", "database", "manual"]
- ["<mysql_async::conn::Conn as mysql_async::queryable::Queryable>::query_iter", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["<mysql_async::conn::Conn as mysql_async::queryable::Queryable>::exec_iter", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_map", "Argument[1].Parameter[0]", "database", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec_map", "Argument[2].Parameter[0]", "database", "manual"]
- ["mysql_async::queryable::Queryable::query_map", "Argument[1].Parameter[0]", "database", "manual"]
- ["mysql_async::queryable::Queryable::exec_map", "Argument[2].Parameter[0]", "database", "manual"]
- ["<mysql_common::row::Row>::get", "ReturnValue.Field[core::option::Option::Some(0)]", "database", "manual"]
- ["<mysql_common::row::Row>::get_opt", "ReturnValue.Field[core::option::Option::Some(0)].Field[core::result::Result::Ok(0)]", "database", "manual"]
- ["<mysql_common::row::Row>::take", "ReturnValue.Field[core::option::Option::Some(0)]", "database", "manual"]
Expand All @@ -35,9 +35,9 @@ extensions:
pack: codeql/rust-all
extensible: summaryModel
data:
- ["<_ as mysql_async::queryable::Queryable>::query_fold", "Argument[1]", "Argument[2].Parameter[0]", "value", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_fold", "Argument[2].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "value", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec_fold", "Argument[2]", "Argument[3].Parameter[0]", "value", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::exec_fold", "Argument[3].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "value", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_map", "Argument[1].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "value", "manual"]
- ["<_ as mysql_async::queryable::Queryable>::query_map", "Argument[2].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "value", "manual"]
- ["mysql_async::queryable::Queryable::query_fold", "Argument[1]", "Argument[2].Parameter[0]", "value", "manual"]
- ["mysql_async::queryable::Queryable::query_fold", "Argument[2].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "value", "manual"]
- ["mysql_async::queryable::Queryable::exec_fold", "Argument[2]", "Argument[3].Parameter[0]", "value", "manual"]
- ["mysql_async::queryable::Queryable::exec_fold", "Argument[3].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)]", "value", "manual"]
- ["mysql_async::queryable::Queryable::query_map", "Argument[1].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "value", "manual"]
- ["mysql_async::queryable::Queryable::query_map", "Argument[2].ReturnValue", "ReturnValue.Future.Field[core::result::Result::Ok(0)].Element", "value", "manual"]
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