Commit f5bdd1af authored by Committed by Bastian KöcherBrowse files
Use proper span when emitting 'self' identifier (#210)
Normally, the span of a field has the same hygiene context as `Span::call_site`. However, it's possible for a struct definition to be 'constructed' via a `macro_rules` macro such that the field has a different hygiene context. This will cause the expanded code to be unable to resolve any references to `self`, resulting in a compilation error. This pull request uses `quote!` instead of `quote_spanned!` when emitting a 'self' identifier. `quote_spanned!` is still used for everything else in the emitted method, meaning that error messages will still point to the proper field. I've included a test case which triggers this issue on Rust 1.43.1. It's current difficult to hit this issue other than in this artificial case, but that will change once rust-lang/rust#72622 is re-landed.