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Tracking the old name of renamed unstable library attribute

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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
This commit is contained in:
xizheyin
2025-06-07 18:57:33 +08:00
parent 8eeaed06ea
commit b8066f94fd
20 changed files with 58 additions and 33 deletions
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5
compiler/rustc_attr_parsing/src/attributes/stability.rs
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@@ -299,6 +299,7 @@ pub(crate) fn parse_unstability(
let mut issue_num = None;
let mut is_soft = false;
let mut implied_by = None;
let mut old_name = None;
for param in args.list()?.mixed() {
let Some(param) = param.meta_item() else {
cx.emit_err(session_diagnostics::UnsupportedLiteral {
@@ -346,11 +347,12 @@ pub(crate) fn parse_unstability(
Some(sym::implied_by) => {
insert_value_into_option_or_error(cx, &param, &mut implied_by)?
}
Some(sym::old_name) => insert_value_into_option_or_error(cx, &param, &mut old_name)?,
_ => {
cx.emit_err(session_diagnostics::UnknownMetaItem {
span: param.span(),
item: param.path().to_string(),
expected: &["feature", "reason", "issue", "soft", "implied_by"],
expected: &["feature", "reason", "issue", "soft", "implied_by", "old_name"],
});
return None;
}
@@ -375,6 +377,7 @@ pub(crate) fn parse_unstability(
issue: issue_num,
is_soft,
implied_by,
old_name,
};
Some((feature, level))
}