From b61eab5d514af27009769373360b57dd55036a23 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Mon, 24 Aug 2020 20:20:31 +0200
Subject: [PATCH] Add test for doc alias on associated const in trait impls

---
 src/test/rustdoc-ui/doc-alias-assoc-const.rs  | 22 +++++++++++++++++++
 .../rustdoc-ui/doc-alias-assoc-const.stderr   |  8 +++++++
 2 files changed, 30 insertions(+)
 create mode 100644 src/test/rustdoc-ui/doc-alias-assoc-const.rs
 create mode 100644 src/test/rustdoc-ui/doc-alias-assoc-const.stderr

diff --git a/src/test/rustdoc-ui/doc-alias-assoc-const.rs b/src/test/rustdoc-ui/doc-alias-assoc-const.rs
new file mode 100644
index 00000000000..73e23c152f2
--- /dev/null
+++ b/src/test/rustdoc-ui/doc-alias-assoc-const.rs
@@ -0,0 +1,22 @@
+#![feature(doc_alias)]
+#![feature(trait_alias)]
+
+pub struct Foo;
+
+pub trait Bar {
+    const BAZ: u8;
+}
+
+impl Bar for Foo {
+    #[doc(alias = "CONST_BAZ")] //~ ERROR
+    const BAZ: u8 = 0;
+}
+
+impl Foo {
+    #[doc(alias = "CONST_FOO")] // ok!
+    pub const FOO: u8 = 0;
+
+    pub fn bar() -> u8 {
+        Self::FOO
+    }
+}
diff --git a/src/test/rustdoc-ui/doc-alias-assoc-const.stderr b/src/test/rustdoc-ui/doc-alias-assoc-const.stderr
new file mode 100644
index 00000000000..3c64548cc20
--- /dev/null
+++ b/src/test/rustdoc-ui/doc-alias-assoc-const.stderr
@@ -0,0 +1,8 @@
+error: `#[doc(alias = "...")]` isn't allowed on associated constant in trait implementation block
+  --> $DIR/doc-alias-assoc-const.rs:11:11
+   |
+LL |     #[doc(alias = "CONST_BAZ")]
+   |           ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
-- 
2.44.0