From 69ca324a53c35bb9cd77c5635a9ecc4f201eaa1c Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Wed, 20 Oct 2021 15:57:44 +0200
Subject: [PATCH] Add test to ensure that the missing_doc_code_examples is not
 triggered on foreign trait implementations

---
 src/test/rustdoc-ui/doc-without-codeblock.rs     | 9 +++++++++
 src/test/rustdoc-ui/doc-without-codeblock.stderr | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/test/rustdoc-ui/doc-without-codeblock.rs b/src/test/rustdoc-ui/doc-without-codeblock.rs
index 6812a454157b9..315fca195873a 100644
--- a/src/test/rustdoc-ui/doc-without-codeblock.rs
+++ b/src/test/rustdoc-ui/doc-without-codeblock.rs
@@ -11,3 +11,12 @@ pub mod foo {
     //~^ ERROR missing code example in this documentation
     pub fn bar() {}
 }
+
+// This impl is here to ensure the lint isn't emitted for foreign traits implementations.
+impl std::ops::Neg for Foo {
+    type Output = Self;
+
+    fn neg(self) -> Self::Output {
+        Self
+    }
+}
diff --git a/src/test/rustdoc-ui/doc-without-codeblock.stderr b/src/test/rustdoc-ui/doc-without-codeblock.stderr
index aac537e9783cd..1c138044165f2 100644
--- a/src/test/rustdoc-ui/doc-without-codeblock.stderr
+++ b/src/test/rustdoc-ui/doc-without-codeblock.stderr
@@ -6,7 +6,7 @@ LL | |
 LL | | /// Some docs.
 LL | |
 ...  |
-LL | |     pub fn bar() {}
+LL | |     }
 LL | | }
    | |_^
    |