1 files changed, 20 insertions, 10 deletions

diff --git a/compiler/rustc_builtin_macros/src/test_harness.rs b/compiler/rustc_builtin_macros/src/test_harness.rs
index 0ebe29df9..b8b8351a3 100644
--- a/compiler/rustc_builtin_macros/src/test_harness.rs
+++ b/compiler/rustc_builtin_macros/src/test_harness.rs
@@ -14,13 +14,15 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 use rustc_target::spec::PanicStrategy;
 use smallvec::{smallvec, SmallVec};
-use tracing::debug;
+use thin_vec::thin_vec;
 
 use std::{iter, mem};
 
+#[derive(Clone)]
 struct Test {
     span: Span,
     ident: Ident,
+    name: Symbol,
 }
 
 struct TestCtxt<'a> {
@@ -120,10 +122,10 @@ impl<'a> MutVisitor for TestHarnessGenerator<'a> {
 
     fn flat_map_item(&mut self, i: P<ast::Item>) -> SmallVec<[P<ast::Item>; 1]> {
         let mut item = i.into_inner();
-        if is_test_case(&self.cx.ext_cx.sess, &item) {
+        if let Some(name) = get_test_name(&self.cx.ext_cx.sess, &item) {
             debug!("this is a test item");
 
-            let test = Test { span: item.span, ident: item.ident };
+            let test = Test { span: item.span, ident: item.ident, name };
             self.tests.push(test);
         }
 
@@ -187,7 +189,10 @@ impl<'a> MutVisitor for EntryPointCleaner<'a> {
                     let dc_nested =
                         attr::mk_nested_word_item(Ident::new(sym::dead_code, self.def_site));
                     let allow_dead_code_item = attr::mk_list_item(allow_ident, vec![dc_nested]);
-                    let allow_dead_code = attr::mk_attr_outer(allow_dead_code_item);
+                    let allow_dead_code = attr::mk_attr_outer(
+                        &self.sess.parse_sess.attr_id_generator,
+                        allow_dead_code_item,
+                    );
                     let attrs = attrs
                         .into_iter()
                         .filter(|attr| {
@@ -298,8 +303,10 @@ fn mk_main(cx: &mut TestCtxt<'_>) -> P<ast::Item> {
     let call_test_main = ecx.stmt_expr(call_test_main);
 
     // extern crate test
-    let test_extern_stmt =
-        ecx.stmt_item(sp, ecx.item(sp, test_id, vec![], ast::ItemKind::ExternCrate(None)));
+    let test_extern_stmt = ecx.stmt_item(
+        sp,
+        ecx.item(sp, test_id, ast::AttrVec::new(), ast::ItemKind::ExternCrate(None)),
+    );
 
     // #[rustc_main]
     let main_meta = ecx.meta_word(sp, sym::rustc_main);
@@ -333,7 +340,7 @@ fn mk_main(cx: &mut TestCtxt<'_>) -> P<ast::Item> {
 
     let main = P(ast::Item {
         ident: main_id,
-        attrs: vec![main_attr],
+        attrs: thin_vec![main_attr],
         id: ast::DUMMY_NODE_ID,
         kind: main,
         vis: ast::Visibility { span: sp, kind: ast::VisibilityKind::Public, tokens: None },
@@ -352,9 +359,12 @@ fn mk_tests_slice(cx: &TestCtxt<'_>, sp: Span) -> P<ast::Expr> {
     debug!("building test vector from {} tests", cx.test_cases.len());
     let ecx = &cx.ext_cx;
 
+    let mut tests = cx.test_cases.clone();
+    tests.sort_by(|a, b| a.name.as_str().cmp(&b.name.as_str()));
+
     ecx.expr_array_ref(
         sp,
-        cx.test_cases
+        tests
             .iter()
             .map(|test| {
                 ecx.expr_addr_of(test.span, ecx.expr_path(ecx.path(test.span, vec![test.ident])))
@@ -363,8 +373,8 @@ fn mk_tests_slice(cx: &TestCtxt<'_>, sp: Span) -> P<ast::Expr> {
     )
 }
 
-fn is_test_case(sess: &Session, i: &ast::Item) -> bool {
-    sess.contains_name(&i.attrs, sym::rustc_test_marker)
+fn get_test_name(sess: &Session, i: &ast::Item) -> Option<Symbol> {
+    sess.first_attr_value_str_by_name(&i.attrs, sym::rustc_test_marker)
 }
 
 fn get_test_runner(