add test to reproduce #137662 (using ty decl macro fragment in an attr) and fix it

2025-02-26 14:29:19 +01:00
parent 96cfc75584
commit 41dd80aeaa
2 changed files with 29 additions and 0 deletions
--- a/compiler/rustc_attr_parsing/src/parser.rs
+++ b/compiler/rustc_attr_parsing/src/parser.rs
@@ -473,6 +473,15 @@ impl<'a> MetaItemListParserContext<'a> {
        {
            self.inside_delimiters.next();
            return Some(MetaItemOrLitParser::Lit(lit));
+        } else if let Some(TokenTree::Delimited(.., Delimiter::Invisible(_), inner_tokens)) =
+            self.inside_delimiters.peek()
+        {
+            self.inside_delimiters.next();
+            return MetaItemListParserContext {
+                inside_delimiters: inner_tokens.iter().peekable(),
+                dcx: self.dcx,
+            }
+            .next();
        }

        // or a path.