1 files changed, 5 insertions, 2 deletions
diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs
index 14d1b502474..193f0d124bb 100644
--- a/compiler/rustc_mir_build/src/build/mod.rs
+++ b/compiler/rustc_mir_build/src/build/mod.rs
@@ -568,8 +568,11 @@ fn construct_const<'a, 'tcx>(
             ..
         }) => (*span, ty.span),
         Node::AnonConst(ct) => (ct.span, ct.span),
-        Node::Expr(&hir::Expr { span, kind: hir::ExprKind::ConstBlock(_), .. }) => (span, span),
-        node => span_bug!(tcx.def_span(def), "can't build MIR for {def:?}: {node:#?}"),
+        Node::ConstBlock(_) => {
+            let span = tcx.def_span(def);
+            (span, span)
+        }
+        _ => span_bug!(tcx.def_span(def), "can't build MIR for {:?}", def),
     };
 
     let infcx = tcx.infer_ctxt().build();