Re: [perl #17718] %tiedhash in bool context doesn't check if hash is empty

[p5sagit/p5-mst-13.2.git] / pp.c

diff --git a/pp.c b/pp.c
index 53aea9b..7acc1da 100644 (file)
--- a/pp.c
+++ b/pp.c
@@ -107,6 +107,9 @@ PP(pp_padhv)
     }
     else if (gimme == G_SCALAR) {
        SV* sv = sv_newmortal();
+        if (SvRMAGICAL(TARG) && mg_find(TARG, PERL_MAGIC_tied))
+            Perl_croak(aTHX_ "Can't provide tied hash usage; "
+                       "use keys(%%hash) to test if empty");
        if (HvFILL((HV*)TARG))
            Perl_sv_setpvf(aTHX_ sv, "%ld/%ld",
                      (long)HvFILL((HV*)TARG), (long)HvMAX((HV*)TARG) + 1);