ptsname_r: Work around bug on Android 4.3. * m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is correct. * lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R is defined, just fix the return value. * doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword: The behaviour of musl libc is nothing to be "fixed", since it is compliant with the next POSIX standard.

Description:
File descriptor functions that avoid clobbering STD{IN,OUT,ERR}_FILENO.

Files:
lib/unistd--.h
lib/dup-safer.c
lib/fd-safer.c
lib/pipe-safer.c
lib/unistd-safer.h
m4/unistd-safer.m4

Depends-on:
fcntl
unistd

configure.ac:
gl_UNISTD_SAFER

Makefile.am:
lib_SOURCES += dup-safer.c fd-safer.c pipe-safer.c

Include:
"unistd-safer.h"

License:
GPL

Maintainer:
Paul Eggert, Jim Meyering