rustdoc: add missing margin to no-docblock methods

src/librustdoc/html/render/print_item.rs

@@ -718,7 +718,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
         if toggled {
             write!(w, "<details class=\"rustdoc-toggle method-toggle\" open><summary>");
         }
-        write!(w, "<div id=\"{}\" class=\"method has-srclink\">", id);
+        write!(w, "<section id=\"{}\" class=\"method has-srclink\">", id);
         render_rightside(w, cx, m, t, RenderMode::Normal);
         write!(w, "<h4 class=\"code-header\">");
         render_assoc_item(
@@ -730,7 +730,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
             RenderMode::Normal,
         );
         w.write_str("</h4>");
-        w.write_str("</div>");
+        w.write_str("</section>");
         if toggled {
             write!(w, "</summary>");
             w.push_buffer(content);

src/librustdoc/html/static/css/rustdoc.css

@@ -2008,7 +2008,10 @@ in storage.js plus the media query with (min-width: 701px)
 .method-toggle summary,
 .implementors-toggle summary,
 .impl,
-#implementors-list > .docblock {
+#implementors-list > .docblock,
+.impl-items > section,
+.methods > section
+{
 	margin-bottom: 0.75em;
 }
 

src/test/rustdoc-gui/no-docblock.goml

@@ -0,0 +1,8 @@
+// This test checks that there are margins applied to methods with no docblocks.
+goto: file://|DOC_PATH|/test_docs/trait.TraitWithNoDocblocks.html
+// Check that the two methods are more than 24px apart.
+compare-elements-position-near-false: ("//*[@id='tymethod.first_fn']", "//*[@id='tymethod.second_fn']", {"y": 24})
+
+goto: file://|DOC_PATH|/test_docs/struct.TypeWithNoDocblocks.html
+// Check that the two methods are more than 24px apart.
+compare-elements-position-near-false: ("//*[@id='method.first_fn']", "//*[@id='method.second_fn']", {"y": 24})

src/test/rustdoc-gui/src/test_docs/lib.rs

@@ -355,3 +355,15 @@ impl<R: std::io::Read> std::iter::Iterator for NotableStructWithLongName<R> {
 
     fn next(&mut self) -> Option<Self::Item> { () }
 }
+
+pub trait TraitWithNoDocblocks {
+    fn first_fn(&self);
+    fn second_fn(&self);
+}
+
+pub struct TypeWithNoDocblocks;
+
+impl TypeWithNoDocblocks {
+    pub fn first_fn(&self) {}
+    pub fn second_fn(&self) {}
+}