diff options
Diffstat (limited to 'src/libsyntax')
| -rw-r--r-- | src/libsyntax/ext/deriving/generic.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/ext/deriving/generic.rs b/src/libsyntax/ext/deriving/generic.rs index 7050cfbedb7..8221be1bbcb 100644 --- a/src/libsyntax/ext/deriving/generic.rs +++ b/src/libsyntax/ext/deriving/generic.rs @@ -958,7 +958,7 @@ fn create_struct_pattern(cx: @ExtCtxt, // struct_type is definitely not Unknown, since struct_def.fields // must be nonempty to reach here let pattern = if struct_type == Record { - let field_pats = do vec::build |push| { + let field_pats = do vec::build(None) |push| { for (&pat, &(id, _)) in subpats.iter().zip(ident_expr.iter()) { // id is guaranteed to be Some push(ast::FieldPat { ident: id.unwrap(), pat: pat }) |