* nss/test-netdb.c (test_hosts): Don't use MAXHOSTNAMELEN. Instead, use dynamic buffer to test gethostname's ENAMETOOLONG error.
* libio/ioungetwc.c (ungetwc): Orient stream first. * libio/Makefile (tests): Add tst-ungetwc1. * libio/tst-ungetwc1.c: New file.