Auto merge of #78181 - GuillaumeGomez:sized-trait, r=jyn514

Add Sized trait display when implemented on type

Fixes https://github.com/rust-lang/rust/issues/24183.

I'm not too happy about the hack I had to add in here, however, it seems like the `Sized` trait is **very** special.

cc `@jyn514`
r? `@ollie27`

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/rustdoc/sized_trait.rs b/src/test/rustdoc/sized_trait.rs
new file mode 100644
index 00000000000..26d12817afc
--- /dev/null
+++ b/src/test/rustdoc/sized_trait.rs
@@ -0,0 +1,17 @@
+#![crate_name = "foo"]
+
+// @has foo/struct.Bar.html
+// @!has - '//h3[@id="impl-Sized"]'
+pub struct Bar {
+    a: u16,
+}
+
+// @has foo/struct.Foo.html
+// @!has - '//h3[@id="impl-Sized"]'
+pub struct Foo<T: ?Sized>(T);
+
+// @has foo/struct.Unsized.html
+// @has - '//h3[@id="impl-Sized"]/code' 'impl !Sized for Unsized'
+pub struct Unsized {
+    data: [u8],
+}