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

1 files changed, 2 insertions, 3 deletions

diff --git a/pp_ctl.c b/pp_ctl.c
index 0d9a8cb309..58ab34ccda 100644
--- 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++;
 	}
     }