diff options
Diffstat (limited to 'src/libsyntax_ext/proc_macro_harness.rs')
| -rw-r--r-- | src/libsyntax_ext/proc_macro_harness.rs | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/libsyntax_ext/proc_macro_harness.rs b/src/libsyntax_ext/proc_macro_harness.rs index 792c97d8508..fbded7dc130 100644 --- a/src/libsyntax_ext/proc_macro_harness.rs +++ b/src/libsyntax_ext/proc_macro_harness.rs @@ -92,10 +92,12 @@ pub fn inject(sess: &ParseSess, impl<'a> CollectProcMacros<'a> { fn check_not_pub_in_root(&self, vis: &ast::Visibility, sp: Span) { if self.is_proc_macro_crate && self.in_root && vis.node.is_pub() { - self.handler.span_err(sp, - "`proc-macro` crate types cannot \ - export any items other than functions \ - tagged with `#[proc_macro_derive]` currently"); + self.handler.span_err( + sp, + "`proc-macro` crate types currently cannot export any items other \ + than functions tagged with `#[proc_macro]`, `#[proc_macro_derive]`, \ + or `#[proc_macro_attribute]`", + ); } } |