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authorNicholas Nethercote <n.nethercote@gmail.com>2025-03-25 15:50:31 +1100
committerNicholas Nethercote <n.nethercote@gmail.com>2025-03-25 16:48:03 +1100
commit867da30cc71017597d9ed731b03a45c79accd873 (patch)
treec8675db30281e7955c3bc369c26c7ac1c6b2f2b6 /compiler/rustc_error_codes/src
parente576d8850de702f6c712eaca77f758f72ef13419 (diff)
downloadrust-867da30cc71017597d9ed731b03a45c79accd873.tar.gz
rust-867da30cc71017597d9ed731b03a45c79accd873.zip
Avoid `kw::Empty` when dealing with `rustc_allowed_through_unstable_modules`.
The existing code produces `Some(kw::Empty)` for these invalid forms:

- a non-name-value, e.g. `#[rustc_allowed_through_unstable_modules]`

- a non-string arg, e.g. `#[rustc_allowed_through_unstable_modules = 3]`

The new code avoids the `kw::Empty` and is a little shorter. It will
produce `None` in those cases, which means E0789 won't be produced if
the `stable` attribute is missing for these invalid forms. This doesn't
matter, because these invalid forms will trigger an "malformed
`rustc_allowed_through_unstable_modules` attribute" anyway.
Diffstat (limited to 'compiler/rustc_error_codes/src')
-rw-r--r--compiler/rustc_error_codes/src/error_codes/E0789.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0789.md b/compiler/rustc_error_codes/src/error_codes/E0789.md
index 2c0018cc799..c7bc6cfde51 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0789.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0789.md
@@ -14,7 +14,7 @@ Erroneous code example:
 
 #![unstable(feature = "foo_module", reason = "...", issue = "123")]
 
-#[rustc_allowed_through_unstable_modules]
+#[rustc_allowed_through_unstable_modules = "deprecation message"]
 // #[stable(feature = "foo", since = "1.0")]
 struct Foo;
 // ^^^ error: `rustc_allowed_through_unstable_modules` attribute must be