Add librustc metadata error codes to global check

src/librustc_driver/lib.rs

@@ -1134,6 +1134,7 @@ pub fn diagnostics_registry() -> errors::registry::Registry {
     all_errors.extend_from_slice(&rustc_privacy::DIAGNOSTICS);
     all_errors.extend_from_slice(&rustc_trans::DIAGNOSTICS);
     all_errors.extend_from_slice(&rustc_const_eval::DIAGNOSTICS);
+    all_errors.extend_from_slice(&rustc_metadata::DIAGNOSTICS);
 
     Registry::new(&all_errors)
 }

src/librustc_metadata/diagnostics.rs

@@ -21,7 +21,7 @@
 The rust compiler cannot link to an external library if you don't give it its
 name. Example:
 
-```
+```ignore
 #[link(name = "some_lib")] extern {} // ok!
 ```
 "##,
@@ -72,7 +72,7 @@
 Please add the name parameter to allow the rust compiler to find the library
 you want. Example:
 
-```
+```ignore
 #[link(kind = "dylib", name = "some_lib")] extern {} // ok!
 ```
 "##,
@@ -121,7 +121,7 @@ macro_rules! get_pimientos {
 
 // In your crate:
 #[macro_use(get_tacos, get_pimientos)] // It imports `get_tacos` and
-extern crate some_crate;               // `get_pimientos` macros from some_crate.
+extern crate some_crate;               // `get_pimientos` macros from some_crate
 ```
 
 If you would like to import all exported macros, write `macro_use` with no

src/librustc_metadata/lib.rs

@@ -63,3 +63,5 @@
 pub mod loader;
 pub mod macro_import;
 pub mod tls_context;
+
+__build_diagnostic_array! { librustc_metadata, DIAGNOSTICS }