Add FIXME about FileName check's fragility

JohnTitor · JohnTitor · commit 632e759497ec · 2025-10-11T21:32:47.000+09:00
diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs
@@ -2547,6 +2547,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             "you must specify a type for this binding, like `{concrete_type}`",
                         );
 
+                        // FIXME: Maybe FileName::Anon should also be handled,
+                        // otherwise there would be no suggestion if the source is STDIN for example.
                         match (filename, parent_node) {
                             (
                                 FileName::Real(_),

Original file line number	Diff line number	Diff line change
`@@ -2547,6 +2547,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {`
`2547`	`2547`	"you must specify a type for this binding, like `{concrete_type}`",
`2548`	`2548`	`);`
`2549`	`2549`
	`2550`	`+ // FIXME: Maybe FileName::Anon should also be handled,`
	`2551`	`+ // otherwise there would be no suggestion if the source is STDIN for example.`
`2550`	`2552`	`match (filename, parent_node) {`
`2551`	`2553`	`(`
`2552`	`2554`	`FileName::Real(_),`