Use nearest non block module as the correct parent module

compiler/rustc_resolve/src/diagnostics.rs

@@ -3097,6 +3097,8 @@ pub(crate) fn find_cfg_stripped(&self, err: &mut Diag<'_>, segment: &Symbol, mod
                 continue;
             }
 
+            let parent_module = self.get_nearest_non_block_module(parent_scope).def_id();
+
             fn comes_from_same_module_for_glob(
                 r: &Resolver<'_, '_>,
                 parent_module: DefId,

tests/ui/resolve/pub-in-path-153848.rs

@@ -0,0 +1,9 @@
+//@ edition: 2015
+
+pub(in a) mod aa { //~ ERROR cannot find module or crate `a` in the crate root
+}
+mod test {
+    #[cfg(test)]
+    use super::a;
+}
+fn main() {}

tests/ui/resolve/pub-in-path-153848.stderr

@@ -0,0 +1,21 @@
+error[E0433]: cannot find module or crate `a` in the crate root
+  --> $DIR/pub-in-path-153848.rs:3:8
+   |
+LL | pub(in a) mod aa {
+   |        ^ use of unresolved module or unlinked crate `a`
+   |
+note: found an item that was configured out
+  --> $DIR/pub-in-path-153848.rs:7:16
+   |
+LL |     #[cfg(test)]
+   |           ---- the item is gated here
+LL |     use super::a;
+   |                ^
+help: you might be missing a crate named `a`, add it to your project and import it in your code
+   |
+LL + extern crate a;
+   |
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0433`.