Fix ICE in const_trait check code

This fixes #102156.
2022-09-27 13:42:32 +00:00 · 2022-09-27 13:42:32 +00:00 · 27b280e1b5
commit 27b280e1b5
parent 57ee5cf5a9
3 changed files with 35 additions and 1 deletions
--- a/compiler/rustc_passes/src/check_const.rs
+++ b/compiler/rustc_passes/src/check_const.rs
@ -199,7 +199,7 @@ impl<'tcx> Visitor<'tcx> for CheckConstVisitor<'tcx> {
            ..
        }) = item.kind
        {
-            let def_id = trait_ref.trait_def_id().unwrap();
+            let Some(def_id) = trait_ref.trait_def_id() else { return; };
            let source_map = tcx.sess.source_map();
            if !tcx.has_attr(def_id, sym::const_trait) {
                tcx.sess