Join GitHub today
GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together.Sign up
Delay gensym creation for "underscore items" (`use foo as _`/`const _`) until name resolution #56392
So they cannot be cloned by macros. See #56303 for the discussion.
Mostly fix cross-crate use of underscore items by inverting the "gensyms are lost in metadata" bug as described in #56303 (comment).