diff options
| -rw-r--r-- | macros/src/syntax.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/macros/src/syntax.rs b/macros/src/syntax.rs index ee03b2f5..23981d98 100644 --- a/macros/src/syntax.rs +++ b/macros/src/syntax.rs @@ -973,6 +973,13 @@ fn parse_args( let ident_s = ident.to_string(); match &*ident_s { "binds" if accepts_binds => { + if binds.is_some() { + return Err(parse::Error::new( + ident.span(), + "argument appears more than once", + )); + } + // #ident let ident = content.parse()?; |