diff options
| -rw-r--r-- | src/libproc_macro/lib.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs index cf1d4024373..1163c1a98d5 100644 --- a/src/libproc_macro/lib.rs +++ b/src/libproc_macro/lib.rs @@ -38,6 +38,7 @@ #![feature(rustc_private)] #![feature(staged_api)] #![feature(lang_items)] +#![feature(optin_builtin_traits)] #[macro_use] extern crate syntax; @@ -310,6 +311,11 @@ pub struct SourceFile { filemap: Lrc<FileMap>, } +#[unstable(feature = "proc_macro", issue = "38356")] +impl !Send for SourceFile {} +#[unstable(feature = "proc_macro", issue = "38356")] +impl !Sync for SourceFile {} + impl SourceFile { /// Get the path to this source file. /// |