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foreach defelem magic should only be applied to PL_sv_undef
[perl5.git] / pp_hot.c
index 70c6866..de75f27 100644 (file)
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -1817,7 +1817,7 @@ PP(pp_iter)
        SvTEMP_off(sv);
     else
        sv = &PL_sv_undef;
-    if (av != PL_curstack && SvIMMORTAL(sv)) {
+    if (av != PL_curstack && sv == &PL_sv_undef) {
        SV *lv = cx->blk_loop.iterlval;
        if (lv && SvREFCNT(lv) > 1) {
            SvREFCNT_dec(lv);