1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
index bba2800fb05..4f79c6a3d82 100644
--- a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
@@ -352,6 +352,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                         bx.set_var_name(a, &(name.clone() + ".0"));
                         bx.set_var_name(b, &(name.clone() + ".1"));
                     }
+                    OperandValue::ZeroSized => {
+                        // These never have a value to talk about
+                    }
                 },
                 LocalRef::PendingOperand => {}
             }