When sorting, promote to PVNV only for built-in comparison

diff --git a/pp_ctl.c b/pp_ctl.c
index 0d9a8cb..58ab34c 100644 (file)
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -612,10 +612,9 @@ PP(pp_sort)
     while (MARK < SP) {        /* This may or may not shift down one here. */
        /*SUPPRESS 560*/
        if (*up = *++MARK) {                    /* Weed out nulls. */
-           if (!SvPOK(*up))
+           SvTEMP_off(*up);
+           if (!sortcop && !SvPOK(*up))
                (void)sv_2pv(*up, &na);
-           else
-               SvTEMP_off(*up);
            up++;
        }
     }