print join(':',200..400) eq join(':',@foo) ? "ok 10\n" : "not ok 10\n";
print ($h{'foo'} eq '' ? "ok 11\n" : "not ok 11\n");
-print ($h{''} eq 'bar' ? "ok 12\n" : "not ok 12\n");
+if ($h{''} eq 'bar') {
+ print "ok 12\n" ;
+}
+else {
+ print "not ok 12\n" ;
+ if ($AnyDBM_File::ISA[0] eq 'DB_File' && $DB_File::db_ver >= 2.004010) {
+ ($major, $minor, $patch) = ($DB_File::db_ver =~ /^(\d+)\.(\d\d\d)(\d\d\d)/) ;
+ $major =~ s/^0+// ;
+ $minor =~ s/^0+// ;
+ $patch =~ s/^0+// ;
+ $compact = "$major.$minor.$patch" ;
+
+ print STDERR <<EOM ;
+#
+# anydbm.t test 12 will fail when AnyDBM_File uses the combination of
+# DB_File and Berkeley DB 2.4.10 (or greater).
+# You are using DB_File $DB_File::VERSION and Berkeley DB $compact
+#
+# Berkeley DB 2 from version 2.4.10 onwards does not allow null keys.
+# This feature will be reenabled in a future version of Berkeley DB.
+#
+EOM
+ }
+}
untie %h;
if ($^O eq 'VMS') {