xo-interpreter2: VSM.start_eval() returns const ref

If copied get unstable value, since may be moved away on next gc
2026-03-26 17:08:39 -04:00 · 2026-03-26 17:08:39 -04:00 · 3e97590990
commit 3e97590990
parent 8a78b94cd4
2 changed files with 2 additions and 2 deletions
--- a/include/xo/interpreter2/vsm/DVirtualSchematikaMachine.hpp
+++ b/include/xo/interpreter2/vsm/DVirtualSchematikaMachine.hpp
@ -119,7 +119,7 @@ namespace xo {
            /** evaluate expression @p expr
             *  Require: must first start interactive/batch session
             **/
-            VsmResult start_eval(obj<AExpression> expr);
+            const VsmResult & start_eval(obj<AExpression> expr);

            /** borrow calling thread to run indefinitely,
             *  until halt instruction