Fix undefined behaviour. * lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to 'unsigned int', to avoid shift operations on 'int'. * lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size. * tests/test-count-leading-zeros.c (main): Use a random number that has as many bits as TYPE, not only 2*15 or 2*31 bits. * tests/test-count-trailing-zeros.c (main): Likewise. * tests/test-count-one-bits.c (main): Likewise. * tests/test-memmem.c: Don't include "null-ptr.h". (main): Use zerosize_ptr() instead of null_ptr(). * modules/memmem-tests (Files): Remove tests/null-ptr.h.

Files:
tests/nap.h
tests/test-chown.h
tests/test-chown.c
tests/signature.h
tests/macros.h

Depends-on:
ignore-value
intprops
lstat
mgetgroups
nanosleep
stat-time
stdbool
symlink

configure.ac:
AC_CHECK_FUNCS_ONCE([getegid])

Makefile.am:
TESTS += test-chown
check_PROGRAMS += test-chown
test_chown_LDADD = $(LDADD) $(LIB_NANOSLEEP)