Add test to ensure that the missing_doc_code_examples is not triggered on foreign trait implementations

2 files changed, 10 insertions, 1 deletions

diff --git a/src/test/rustdoc-ui/doc-without-codeblock.rs b/src/test/rustdoc-ui/doc-without-codeblock.rs
index 6812a454157..315fca19587 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 aac537e9783..1c138044165 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 | | }
    | |_^
    |