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authorThe 8472 <git@infinite-source.de>2022-11-15 19:50:11 +0100
committerThe 8472 <git@infinite-source.de>2023-06-14 09:24:51 +0200
commitc0df1c8c432e856c4317c5c7585c86c54bcb46a2 (patch)
tree474ad9d4f0515a218559d7a49ab75055d24a2a16 /compiler/rustc_trait_selection/src
parentfa8762b7b6c2b75d6c83fb011ee8fa4874168829 (diff)
downloadrust-c0df1c8c432e856c4317c5c7585c86c54bcb46a2.tar.gz
rust-c0df1c8c432e856c4317c5c7585c86c54bcb46a2.zip
remove drain-on-drop behavior from vec::DrainFilter and add #[must_use]
Diffstat (limited to 'compiler/rustc_trait_selection/src')
-rw-r--r--compiler/rustc_trait_selection/src/traits/project.rs6
1 files changed, 3 insertions, 3 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/project.rs b/compiler/rustc_trait_selection/src/traits/project.rs
index 563cc257e03..0a1e971f268 100644
--- a/compiler/rustc_trait_selection/src/traits/project.rs
+++ b/compiler/rustc_trait_selection/src/traits/project.rs
@@ -1170,11 +1170,11 @@ fn opt_normalize_projection_type<'a, 'b, 'tcx>(
             };
 
             let mut deduped: SsoHashSet<_> = Default::default();
-            result.obligations.drain_filter(|projected_obligation| {
+            result.obligations.retain(|projected_obligation| {
                 if !deduped.insert(projected_obligation.clone()) {
-                    return true;
+                    return false;
                 }
-                false
+                true
             });
 
             if use_cache {