The t_wait_noproc test checks whether wait(2)-family of functions return
error and set ECHILD for lack of childs.
The t_wait_noproc_wnohang adds to options (except wait(2), wait3(2)) new
parameter WNOHANG and verifies that error is still signaled and errno set
to ECHILD.
Currently t_wait_noproc_wnohang reports failures, these have been marked as
expected and referenced to PR standards/51606.
The problem report is authored by Robert Elz, and the initial regression
has been notified by Nicolas Joly.
Remove redundant test in tests/lib/libc/sys/t_wait for wait6(2) with no
WNOHANG specified.
Sponsored by <The NetBSD Foundation>.
2945e8c443