Auto merge of #34611 - Manishearth:rollup, r=Manishearth

Rollup of 7 pull requests

- Successful merges: #34531, #34545, #34551, #34566, #34567, #34574, #34583
- Failed merges:

1 files changed, 15 insertions, 6 deletions

diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 652cf68db07..8febf1c49ec 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -33,6 +33,7 @@
 #![feature(str_escape)]
 #![feature(unicode)]
 #![feature(question_mark)]
+#![feature(rustc_diagnostic_macros)]
 
 extern crate serialize;
 extern crate term;
@@ -66,6 +67,18 @@ macro_rules! panictry {
     })
 }
 
+#[macro_use]
+pub mod diagnostics {
+    #[macro_use]
+    pub mod macros;
+    pub mod plugin;
+    pub mod metadata;
+}
+
+// NB: This module needs to be declared first so diagnostics are
+// registered before they are used.
+pub mod diagnostic_list;
+
 pub mod util {
     pub mod interner;
     pub mod lev_distance;
@@ -80,12 +93,6 @@ pub mod util {
     pub use self::thin_vec::ThinVec;
 }
 
-pub mod diagnostics {
-    pub mod macros;
-    pub mod plugin;
-    pub mod metadata;
-}
-
 pub mod json;
 
 pub mod syntax {
@@ -130,3 +137,5 @@ pub mod ext {
         pub mod macro_rules;
     }
 }
+
+// __build_diagnostic_array! { libsyntax, DIAGNOSTICS }