[rustdoc] Check doc(cfg()) even of private/hidden items

tests/rustdoc-ui/invalid-cfg.rs

@@ -2,3 +2,20 @@
 #[doc(cfg = "x")] //~ ERROR not followed by parentheses
 #[doc(cfg(x, y))] //~ ERROR multiple `cfg` predicates
 pub struct S {}
+
+// We check it also fails on private items.
+#[doc(cfg = "x")] //~ ERROR not followed by parentheses
+#[doc(cfg(x, y))] //~ ERROR multiple `cfg` predicates
+struct X {}
+
+// We check it also fails on hidden items.
+#[doc(cfg = "x")] //~ ERROR not followed by parentheses
+#[doc(cfg(x, y))] //~ ERROR multiple `cfg` predicates
+#[doc(hidden)]
+pub struct Y {}
+
+// We check it also fails on hidden AND private items.
+#[doc(cfg = "x")] //~ ERROR not followed by parentheses
+#[doc(cfg(x, y))] //~ ERROR multiple `cfg` predicates
+#[doc(hidden)]
+struct Z {}

tests/rustdoc-ui/invalid-cfg.stderr

@@ -10,5 +10,41 @@ error: multiple `cfg` predicates are specified
 LL | #[doc(cfg(x, y))]
    |              ^
 
-error: aborting due to 2 previous errors
+error: `cfg` is not followed by parentheses
+  --> $DIR/invalid-cfg.rs:7:7
+   |
+LL | #[doc(cfg = "x")]
+   |       ^^^^^^^^^ help: expected syntax is: `cfg(/* predicate */)`
+
+error: multiple `cfg` predicates are specified
+  --> $DIR/invalid-cfg.rs:8:14
+   |
+LL | #[doc(cfg(x, y))]
+   |              ^
+
+error: `cfg` is not followed by parentheses
+  --> $DIR/invalid-cfg.rs:12:7
+   |
+LL | #[doc(cfg = "x")]
+   |       ^^^^^^^^^ help: expected syntax is: `cfg(/* predicate */)`
+
+error: multiple `cfg` predicates are specified
+  --> $DIR/invalid-cfg.rs:13:14
+   |
+LL | #[doc(cfg(x, y))]
+   |              ^
+
+error: `cfg` is not followed by parentheses
+  --> $DIR/invalid-cfg.rs:18:7
+   |
+LL | #[doc(cfg = "x")]
+   |       ^^^^^^^^^ help: expected syntax is: `cfg(/* predicate */)`
+
+error: multiple `cfg` predicates are specified
+  --> $DIR/invalid-cfg.rs:19:14
+   |
+LL | #[doc(cfg(x, y))]
+   |              ^
+
+error: aborting due to 8 previous errors
 

tests/rustdoc-ui/issues/issue-91713.stdout

@@ -17,11 +17,11 @@ Default passes for rustdoc:
 check_doc_test_visibility
        check-doc-cfg
 strip-aliased-non-local
+   propagate-doc-cfg
         strip-hidden  (when not --document-hidden-items)
        strip-private  (when not --document-private-items)
   strip-priv-imports  (when --document-private-items)
 collect-intra-doc-links
-   propagate-doc-cfg
  propagate-stability
            run-lints