20.7 & HP-UX 11.0: standard input not a tty?

[Ulrich Windl]

Emacs complains about standard input when a file name is given on the 
command line:

emacs ~windl/doc/Eiffel/eiffel3.tex
emacs: standard input is not a tty
rkdvmhp3:c11adm 57> tty
/dev/pts/ta
rkdvmhp3:c11adm 59> file /dev/pts/ta
/dev/pts/ta:    character special (234/0)

But it starts and works without a problem if used without argument. Once 
started, 
I can load the file.

A little bit of trace shows:

access("/usr/local/libexec/emacs/20.7/hppa2.0n-hp-hpux11.00", F_OK) = 0
access("/usr/local/share/emacs/20.7/etc", F_OK) .................. = 0
open("/usr/lib/nls/loc/locales.2/C", O_RDONLY, 0) ................ ERR#2 ENOENT
access("/usr/local/share/emacs/20.7/site-lisp", F_OK) ............ = 0
access("/usr/local/share/emacs/site-lisp", F_OK) ................. = 0
access("/usr/local/share/emacs/20.7/leim", F_OK) ................. = 0
access("/usr/local/share/emacs/20.7/lisp", F_OK) ................. = 0
ioctl(0, TCGETA, 0x7f7e0780) ..................................... ERR#9 EBADF
emacs: write(2, "e m a c s :   ", 7) .................................... = 7
standardwrite(2, "s t a n d a r d ", 8) .................................. = 8
 write(2, "  ", 1) ................................................ = 1
input iswrite(2, "i n p u t   i s ", 8) .................................. = 8
 write(2, "  ", 1) ................................................ = 1
not a ttwrite(2, "n o t   a   t t ", 8) .................................. = 8
ywrite(2, "y ", 1) ................................................ = 1

write(2, "\n", 1) ................................................ = 1
exit(1) .......................................................... WIFEXITED(1)


The binary was produced on exactly that machine a few hours ago.

Regards,
Ulrich