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The `proc-macro2` crate depends on the `unicode-ident` crate to determine
whether characters have the XID_Start or XID_Continue properties according
to Unicode Standard Annex #31.
However, we only need ASCII identifiers in the kernel, thus we can
simplify the check and remove completely that dependency.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Gary Guo <gary@garyguo.net>
Tested-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-9-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Originally, when the Rust upstream `alloc` standard library crate was
vendored in commit 057b8d257107 ("rust: adapt `alloc` crate to the
kernel"), the SPDX License Identifiers were added to every file so that
the license on those was clear.
Thus do the same for the `proc-macro2` crate.
This makes `scripts/spdxcheck.py` pass.
Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Gary Guo <gary@garyguo.net>
Tested-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-8-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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This is a subset of the Rust `proc-macro2` crate, version 1.0.101
(released 2025-08-16), licensed under "Apache-2.0 OR MIT", from:
https://github.com/dtolnay/proc-macro2/raw/1.0.101/src
The files are copied as-is, with no modifications whatsoever (not even
adding the SPDX identifiers).
For copyright details, please see:
https://github.com/dtolnay/proc-macro2/blob/1.0.101/README.md#license
https://github.com/dtolnay/proc-macro2/blob/1.0.101/LICENSE-APACHE
https://github.com/dtolnay/proc-macro2/blob/1.0.101/LICENSE-MIT
The next two patches modify these files as needed for use within the
kernel. This patch split allows reviewers to double-check the import
and to clearly see the differences introduced.
The following script may be used to verify the contents:
for path in $(cd rust/proc-macro2/ && find . -type f -name '*.rs'); do
curl --silent --show-error --location \
https://github.com/dtolnay/proc-macro2/raw/1.0.101/src/$path \
| diff --unified rust/proc-macro2/$path - && echo $path: OK
done
Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Gary Guo <gary@garyguo.net>
Tested-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-7-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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