Give an item related to issue 27438 a more meaningful name

Author: fmease

compiler/rustc_data_structures/src/lib.rs

@@ -144,9 +144,9 @@ pub fn make_display(f: impl Fn(&mut fmt::Formatter<'_>) -> fmt::Result) -> impl
     Printer { f }
 }
 
-// See comments in compiler/rustc_middle/src/tests.rs
+// See comment in compiler/rustc_middle/src/tests.rs and issue #27438.
 #[doc(hidden)]
-pub fn __noop_fix_for_27438() {}
+pub fn __noop_fix_for_windows_dllimport_issue() {}
 
 #[macro_export]
 macro_rules! external_bitflags_debug {

compiler/rustc_middle/src/tests.rs

@@ -1,11 +1,9 @@
-// FIXME(#27438): right now the unit tests of rustc_middle don't refer to any actual
-//                functions generated in rustc_data_structures (all
-//                references are through generic functions), but statics are
-//                referenced from time to time. Due to this bug we won't
-//                actually correctly link in the statics unless we also
-//                reference a function, so be sure to reference a dummy
-//                function.
+// FIXME(#27438): Right now, the unit tests of `rustc_middle` don't refer to any actual functions
+//                generated in `rustc_data_structures` (all references are through generic functions),
+//                but statics are referenced from time to time. Due to this Windows `dllimport` bug
+//                we won't actually correctly link in the statics unless we also reference a function,
+//                so be sure to reference a dummy function.
 #[test]
 fn noop() {
-    rustc_data_structures::__noop_fix_for_27438();
+    rustc_data_structures::__noop_fix_for_windows_dllimport_issue();
 }