From 71080cfb6b27c57c1f675763b18b5d759ab13d19 Mon Sep 17 00:00:00 2001
From: Shoyu Vanilla <modulo641@gmail.com>
Date: Thu, 22 Aug 2024 00:32:44 +0900
Subject: [PATCH] fix: Wrong `Sized` predicate for
 `generic_predicates_for_param`

---
 crates/hir-ty/src/lower.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/hir-ty/src/lower.rs b/crates/hir-ty/src/lower.rs
index 5824c59c5a..58c34cbd9e 100644
--- a/crates/hir-ty/src/lower.rs
+++ b/crates/hir-ty/src/lower.rs
@@ -1551,6 +1551,10 @@ pub(crate) fn generic_predicates_for_param_query(
                 }
             };
             if invalid_target {
+                // If this is filtered out without lowering, `?Sized` is not gathered into `ctx.unsized_types`
+                if let TypeBound::Path(_, TraitBoundModifier::Maybe) = &**bound {
+                    ctx.lower_where_predicate(pred, &def, true).for_each(drop);
+                }
                 return false;
             }