bjoernager/rust
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Introduce sym::dummy and Ident::dummy.

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The idea is to identify cases of symbols/identifiers that are not
expected to be used. There isn't a perfectly sharp line between "dummy"
and "not dummy", but I think it's useful nonetheless.
This commit is contained in:
Nicholas Nethercote 2025-03-04 17:10:55 +11:00
parent fe04460f6f
commit 0b2d7062c4
7 changed files with 29 additions and 8 deletions
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2
compiler/rustc_expand/src/mbe/quoted.rs
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@ -274,7 +274,7 @@ fn parse_tree<'a>(
let msg =
format!("expected identifier, found `{}`", pprust::token_to_string(token),);
sess.dcx().span_err(token.span, msg);
TokenTree::MetaVar(token.span, Ident::empty())
TokenTree::MetaVar(token.span, Ident::dummy())
}
// There are no more tokens. Just return the `$` we already have.