Index: src/inter_run.c
===================================================================
--- src/inter_run.c	（版本 34263）
+++ src/inter_run.c	（工作副本）
@@ -216,8 +216,8 @@
                 "too many arguments in runops_args");
 
         new_sig[0] = 'O';
-        /* -1 from the end, +1 for the nul at the end */
-        memcpy(new_sig+1, sig+1, len-1+1);
+        memcpy(new_sig+1, sig+1, len);
+
         sig_p = new_sig;
     }