Rollup merge of #91798 - bugadani:issue-91783, r=michaelwoerister

Avoid suggest adding `self` in visibility spec

Fixes #91783

src/test/ui/suggestions/suggest-add-self.rs

@@ -0,0 +1,15 @@
+struct X(i32);
+
+impl X {
+    pub(crate) fn f() {
+        self.0
+        //~^ ERROR expected value, found module `self`
+    }
+
+    pub fn g() {
+        self.0
+        //~^ ERROR expected value, found module `self`
+    }
+}
+
+fn main() {}

src/test/ui/suggestions/suggest-add-self.stderr

@@ -0,0 +1,29 @@
+error[E0424]: expected value, found module `self`
+  --> $DIR/suggest-add-self.rs:5:9
+   |
+LL |     pub(crate) fn f() {
+   |                   - this function doesn't have a `self` parameter
+LL |         self.0
+   |         ^^^^ `self` value is a keyword only available in methods with a `self` parameter
+   |
+help: add a `self` receiver parameter to make the associated `fn` a method
+   |
+LL |     pub(crate) fn f(&self) {
+   |                     +++++
+
+error[E0424]: expected value, found module `self`
+  --> $DIR/suggest-add-self.rs:10:9
+   |
+LL |     pub fn g() {
+   |            - this function doesn't have a `self` parameter
+LL |         self.0
+   |         ^^^^ `self` value is a keyword only available in methods with a `self` parameter
+   |
+help: add a `self` receiver parameter to make the associated `fn` a method
+   |
+LL |     pub fn g(&self) {
+   |              +++++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0424`.