Auto merge of #83781 - JohnTitor:rollup-1vm3dxo, r=JohnTitor

Rollup of 5 pull requests

Successful merges:

 - #83535 (Break when there is a mismatch in the type count)
 - #83721 (Add a button to copy the "use statement")
 - #83740 (Fix comment typo in once.rs)
 - #83745 (Add my new email address to .mailmap)
 - #83754 (Add test to ensure search tabs behaviour)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

11 files changed, 109 insertions, 13 deletions

diff --git a/src/librustdoc/html/markdown.rs b/src/librustdoc/html/markdown.rs
index c44514ed3cb..cdccb1c8581 100644
--- a/src/librustdoc/html/markdown.rs
+++ b/src/librustdoc/html/markdown.rs
@@ -1355,6 +1355,7 @@ fn init_id_map() -> FxHashMap<String, usize> {
     map.insert("default-settings".to_owned(), 1);
     map.insert("rustdoc-vars".to_owned(), 1);
     map.insert("sidebar-vars".to_owned(), 1);
+    map.insert("copy-path".to_owned(), 1);
     // This is the list of IDs used by rustdoc sections.
     map.insert("fields".to_owned(), 1);
     map.insert("variants".to_owned(), 1);
diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs
index cc93e55fc67..25314f87eb5 100644
--- a/src/librustdoc/html/render/print_item.rs
+++ b/src/librustdoc/html/render/print_item.rs
@@ -73,6 +73,7 @@ pub(super) fn print_item(cx: &Context<'_>, item: &clean::Item, buf: &mut Buffer)
         }
     }
     write!(buf, "<a class=\"{}\" href=\"\">{}</a>", item.type_(), item.name.as_ref().unwrap());
+    write!(buf, "<button id=\"copy-path\" onclick=\"copy_path(this)\">⎘</button>");
 
     buf.write_str("</span>"); // in-band
     buf.write_str("<span class=\"out-of-band\">");
diff --git a/src/librustdoc/html/static/main.js b/src/librustdoc/html/static/main.js
index da2952bbebd..f2e62ee7b6b 100644
--- a/src/librustdoc/html/static/main.js
+++ b/src/librustdoc/html/static/main.js
@@ -3061,3 +3061,28 @@ function hideThemeButtonState() {
     window.onhashchange = onHashChange;
     setupSearchLoader();
 }());
+
+function copy_path(but) {
+    var parent = but.parentElement;
+    var path = [];
+
+    onEach(parent.childNodes, function(child) {
+        if (child.tagName === 'A') {
+            path.push(child.textContent);
+        }
+    });
+
+    var el = document.createElement('textarea');
+    el.value = 'use ' + path.join('::') + ';';
+    el.setAttribute('readonly', '');
+    // To not make it appear on the screen.
+    el.style.position = 'absolute';
+    el.style.left = '-9999px';
+
+    document.body.appendChild(el);
+    el.select();
+    document.execCommand('copy');
+    document.body.removeChild(el);
+
+    but.textContent = '✓';
+}
diff --git a/src/librustdoc/html/static/noscript.css b/src/librustdoc/html/static/noscript.css
index c9fed989ec0..4d3332877c0 100644
--- a/src/librustdoc/html/static/noscript.css
+++ b/src/librustdoc/html/static/noscript.css
@@ -33,3 +33,8 @@ rules.
 	/* Since there is no toggle (the "[-]") when JS is disabled, no need for this margin either. */
 	margin-left: 0 !important;
 }
+
+#copy-path {
+	/* It requires JS to work so no need to display it in this case. */
+	display: none;
+}
diff --git a/src/librustdoc/html/static/rustdoc.css b/src/librustdoc/html/static/rustdoc.css
index f5a034a0d24..07dfb7f5cf0 100644
--- a/src/librustdoc/html/static/rustdoc.css
+++ b/src/librustdoc/html/static/rustdoc.css
@@ -1318,20 +1318,29 @@ h4 > .notable-traits {
 	outline: none;
 }
 
+#theme-picker, #settings-menu, .help-button, #copy-path {
+	padding: 4px;
+	width: 27px;
+	height: 29px;
+	border: 1px solid;
+	border-radius: 3px;
+	cursor: pointer;
+}
+
 .help-button {
 	right: 30px;
 	font-family: "Fira Sans", Arial, sans-serif;
 	text-align: center;
 	font-size: 17px;
+	padding-top: 2px;
 }
 
-#theme-picker, #settings-menu, .help-button {
-	padding: 4px;
-	width: 27px;
-	height: 29px;
-	border: 1px solid;
-	border-radius: 3px;
-	cursor: pointer;
+#copy-path {
+	height: 30px;
+	font-size: 18px;
+	margin-left: 10px;
+	padding: 0 6px;
+	width: 28px;
 }
 
 #theme-choices {
diff --git a/src/librustdoc/html/static/themes/ayu.css b/src/librustdoc/html/static/themes/ayu.css
index 7374aee71f8..b24f4035ca8 100644
--- a/src/librustdoc/html/static/themes/ayu.css
+++ b/src/librustdoc/html/static/themes/ayu.css
@@ -498,7 +498,7 @@ kbd {
 	box-shadow-color: #c6cbd1;
 }
 
-#theme-picker, #settings-menu, .help-button {
+#theme-picker, #settings-menu, .help-button, #copy-path {
 	border-color: #5c6773;
 	background-color: #0f1419;
 	color: #fff;
@@ -510,7 +510,8 @@ kbd {
 
 #theme-picker:hover, #theme-picker:focus,
 #settings-menu:hover, #settings-menu:focus,
-.help-button:hover, .help-button:focus {
+.help-button:hover, .help-button:focus,
+#copy-path:hover, #copy-path:focus {
 	border-color: #e0e0e0;
 }
 
diff --git a/src/librustdoc/html/static/themes/dark.css b/src/librustdoc/html/static/themes/dark.css
index cf2d28bb43f..e863ed03f51 100644
--- a/src/librustdoc/html/static/themes/dark.css
+++ b/src/librustdoc/html/static/themes/dark.css
@@ -388,7 +388,7 @@ kbd {
 	box-shadow-color: #c6cbd1;
 }
 
-#theme-picker, #settings-menu, .help-button {
+#theme-picker, #settings-menu, .help-button, #copy-path {
 	border-color: #e0e0e0;
 	background: #f0f0f0;
 	color: #000;
@@ -396,7 +396,8 @@ kbd {
 
 #theme-picker:hover, #theme-picker:focus,
 #settings-menu:hover, #settings-menu:focus,
-.help-button:hover, .help-button:focus {
+.help-button:hover, .help-button:focus,
+#copy-path:hover, #copy-path:focus {
 	border-color: #ffb900;
 }
 
diff --git a/src/librustdoc/html/static/themes/light.css b/src/librustdoc/html/static/themes/light.css
index 7bf6793809c..9335dd96d29 100644
--- a/src/librustdoc/html/static/themes/light.css
+++ b/src/librustdoc/html/static/themes/light.css
@@ -380,14 +380,15 @@ kbd {
 	box-shadow-color: #c6cbd1;
 }
 
-#theme-picker, #settings-menu, .help-button {
+#theme-picker, #settings-menu, .help-button, #copy-path {
 	border-color: #e0e0e0;
 	background-color: #fff;
 }
 
 #theme-picker:hover, #theme-picker:focus,
 #settings-menu:hover, #settings-menu:focus,
-.help-button:hover, .help-button:focus {
+.help-button:hover, .help-button:focus,
+#copy-path:hover, #copy-path:focus {
 	border-color: #717171;
 }
 
diff --git a/src/test/rustdoc-gui/search-tab-selection-if-current-is-empty.goml b/src/test/rustdoc-gui/search-tab-selection-if-current-is-empty.goml
new file mode 100644
index 00000000000..a4df102d245
--- /dev/null
+++ b/src/test/rustdoc-gui/search-tab-selection-if-current-is-empty.goml
@@ -0,0 +1,21 @@
+goto: file://|DOC_PATH|/index.html
+write: (".search-input", "Foo")
+// Waiting for the search results to appear...
+wait-for: "#titles"
+assert: ("#titles > button:nth-of-type(1)", "class", "selected")
+
+// To go back to the original "state"
+goto: file://|DOC_PATH|/index.html
+write: (".search-input", "-> String")
+// Waiting for the search results to appear...
+wait-for: "#titles"
+// With this search, only the last tab shouldn't be empty so it should be selected.
+assert: ("#titles > button:nth-of-type(3)", "class", "selected")
+
+// To go back to the original "state"
+goto: file://|DOC_PATH|/index.html
+write: (".search-input", "-> Something")
+// Waiting for the search results to appear...
+wait-for: "#titles"
+// With this search, all the tabs are empty so the first one should remain selected.
+assert: ("#titles > button:nth-of-type(1)", "class", "selected")
diff --git a/src/test/ui/mir/issue-83499-input-output-iteration-ice.rs b/src/test/ui/mir/issue-83499-input-output-iteration-ice.rs
new file mode 100644
index 00000000000..4d404d015ec
--- /dev/null
+++ b/src/test/ui/mir/issue-83499-input-output-iteration-ice.rs
@@ -0,0 +1,10 @@
+// Test that when in MIR the amount of local_decls and amount of normalized_input_tys don't match
+// that an out-of-bounds access does not occur.
+#![feature(c_variadic)]
+
+fn main() {}
+
+fn foo(_: Bar, ...) -> impl {}
+//~^ ERROR only foreign or `unsafe extern "C" functions may be C-variadic
+//~| ERROR cannot find type `Bar` in this scope
+//~| ERROR at least one trait must be specified
diff --git a/src/test/ui/mir/issue-83499-input-output-iteration-ice.stderr b/src/test/ui/mir/issue-83499-input-output-iteration-ice.stderr
new file mode 100644
index 00000000000..eb172684899
--- /dev/null
+++ b/src/test/ui/mir/issue-83499-input-output-iteration-ice.stderr
@@ -0,0 +1,21 @@
+error: only foreign or `unsafe extern "C" functions may be C-variadic
+  --> $DIR/issue-83499-input-output-iteration-ice.rs:7:16
+   |
+LL | fn foo(_: Bar, ...) -> impl {}
+   |                ^^^
+
+error: at least one trait must be specified
+  --> $DIR/issue-83499-input-output-iteration-ice.rs:7:24
+   |
+LL | fn foo(_: Bar, ...) -> impl {}
+   |                        ^^^^
+
+error[E0412]: cannot find type `Bar` in this scope
+  --> $DIR/issue-83499-input-output-iteration-ice.rs:7:11
+   |
+LL | fn foo(_: Bar, ...) -> impl {}
+   |           ^^^ not found in this scope
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0412`.