From ea013e0d03de41aa3097a2498131a10ab9b11c00 Mon Sep 17 00:00:00 2001
From: Serial <69764315+Serial-ATA@users.noreply.github.com>
Date: Thu, 21 Apr 2022 22:06:19 -0400
Subject: [PATCH] Add more diagnostic items

---
 library/core/src/fmt/mod.rs     |  2 ++
 library/core/src/sync/atomic.rs | 15 +++++++++++++++
 library/std/src/error.rs        |  1 +
 3 files changed, 18 insertions(+)

diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index fac959ac7347d..7f56fa810b245 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -19,6 +19,7 @@ mod nofloat;
 mod num;
 
 #[stable(feature = "fmt_flags_align", since = "1.28.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "Alignment")]
 /// Possible alignments returned by `Formatter::align`
 #[derive(Debug)]
 pub enum Alignment {
@@ -462,6 +463,7 @@ impl<'a> Arguments<'a> {
 ///
 /// [`format()`]: ../../std/fmt/fn.format.html
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "Arguments")]
 #[derive(Copy, Clone)]
 pub struct Arguments<'a> {
     // Format string pieces to print.
diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index 6285d1c1cbb56..406c363dd2455 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -162,6 +162,7 @@ unsafe impl Sync for AtomicBool {}
 /// loads and stores of pointers. Its size depends on the target pointer's size.
 #[cfg(target_has_atomic_load_store = "ptr")]
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "AtomicPtr")]
 #[cfg_attr(target_pointer_width = "16", repr(C, align(2)))]
 #[cfg_attr(target_pointer_width = "32", repr(C, align(4)))]
 #[cfg_attr(target_pointer_width = "64", repr(C, align(8)))]
@@ -1458,6 +1459,7 @@ macro_rules! atomic_int {
      $stable_nand:meta,
      $const_stable:meta,
      $stable_init_const:meta,
+     $diagnostic_item:meta,
      $s_int_type:literal,
      $extra_feature:expr,
      $min_fn:ident, $max_fn:ident,
@@ -1480,6 +1482,7 @@ macro_rules! atomic_int {
         ///
         /// [module-level documentation]: crate::sync::atomic
         #[$stable]
+        #[$diagnostic_item]
         #[repr(C, align($align))]
         pub struct $atomic_type {
             v: UnsafeCell<$int_type>,
@@ -2306,6 +2309,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicI8"),
     "i8",
     "",
     atomic_min, atomic_max,
@@ -2325,6 +2329,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicU8"),
     "u8",
     "",
     atomic_umin, atomic_umax,
@@ -2344,6 +2349,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicI16"),
     "i16",
     "",
     atomic_min, atomic_max,
@@ -2363,6 +2369,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicU16"),
     "u16",
     "",
     atomic_umin, atomic_umax,
@@ -2382,6 +2389,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicI32"),
     "i32",
     "",
     atomic_min, atomic_max,
@@ -2401,6 +2409,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicU32"),
     "u32",
     "",
     atomic_umin, atomic_umax,
@@ -2420,6 +2429,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicI64"),
     "i64",
     "",
     atomic_min, atomic_max,
@@ -2439,6 +2449,7 @@ atomic_int! {
     stable(feature = "integer_atomics_stable", since = "1.34.0"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicU64"),
     "u64",
     "",
     atomic_umin, atomic_umax,
@@ -2458,6 +2469,7 @@ atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicI128"),
     "i128",
     "#![feature(integer_atomics)]\n\n",
     atomic_min, atomic_max,
@@ -2477,6 +2489,7 @@ atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
     rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
     unstable(feature = "integer_atomics", issue = "32976"),
+    cfg_attr(not(test), rustc_diagnostic_item = "AtomicU128"),
     "u128",
     "#![feature(integer_atomics)]\n\n",
     atomic_umin, atomic_umax,
@@ -2500,6 +2513,7 @@ macro_rules! atomic_int_ptr_sized {
             stable(feature = "atomic_nand", since = "1.27.0"),
             rustc_const_stable(feature = "const_ptr_sized_atomics", since = "1.24.0"),
             stable(feature = "rust1", since = "1.0.0"),
+            cfg_attr(not(test), rustc_diagnostic_item = "AtomicIsize"),
             "isize",
             "",
             atomic_min, atomic_max,
@@ -2520,6 +2534,7 @@ macro_rules! atomic_int_ptr_sized {
             stable(feature = "atomic_nand", since = "1.27.0"),
             rustc_const_stable(feature = "const_ptr_sized_atomics", since = "1.24.0"),
             stable(feature = "rust1", since = "1.0.0"),
+            cfg_attr(not(test), rustc_diagnostic_item = "AtomicUsize"),
             "usize",
             "",
             atomic_umin, atomic_umax,
diff --git a/library/std/src/error.rs b/library/std/src/error.rs
index 3f85c2095cbd4..fdeb280d24078 100644
--- a/library/std/src/error.rs
+++ b/library/std/src/error.rs
@@ -53,6 +53,7 @@ use crate::time;
 /// high-level module to provide its own errors while also revealing some of the
 /// implementation for debugging via `source` chains.
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "Error")]
 pub trait Error: Debug + Display {
     /// The lower-level source of this error, if any.
     ///