Reduce Chalk max_size parameter, add test for slow case

1 files changed, 5 insertions, 2 deletions

diff --git a/crates/ra_hir/src/ty/traits/chalk.rs b/crates/ra_hir/src/ty/traits/chalk.rs
index 7bb6a4f4a..8fa0ba7a5 100644
--- a/crates/ra_hir/src/ty/traits/chalk.rs
+++ b/crates/ra_hir/src/ty/traits/chalk.rs
@@ -345,11 +345,14 @@ where
             return Vec::new();
         }
         let trait_ = from_chalk(self.db, trait_id);
-        self.db
+        let result: Vec<_> = self
+            .db
             .impls_for_trait(self.krate, trait_)
             .iter()
             .map(|impl_block| impl_block.to_chalk(self.db))
-            .collect()
+            .collect();
+        debug!("impls_for_trait returned {} impls", result.len());
+        result
     }
     fn impl_provided_for(
         &self,