# TODO doesn't preserve backslash
my @a;
my $s = "$a[0]\[1]";
+####
+# GH #17301 aux_list() sometimes returned wrong #args
+my($r, $h);
+$r = $h->{'i'};
+$r = $h->{'i'}{'j'};
+$r = $h->{'i'}{'j'}{'k'};
+$r = $h->{'i'}{'j'}{'k'}{'l'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'}{'p'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'}{'p'}{'q'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'}{'p'}{'q'}{'r'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'}{'p'}{'q'}{'r'}{'s'};
+$r = $h->{'i'}{'j'}{'k'}{'l'}{'m'}{'n'}{'o'}{'p'}{'q'}{'r'}{'s'}{'t'};