update from main archive 961101 cvs/libc-961104 cvs/libc-961103 cvs/libc-961102

Sat Nov  2 01:48:47 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/errnos.h: Move declaration of errno
	and __errno_location to correct position.

Thu Oct 31 22:51:25 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (distribute): Add rellns-sh.
	* rellns-sh: New file.
	* Makerules (make-link): Use rellns-sh.
	* time/Makefile ($(installed-localtime-file)): Likewise.

Thu Oct 31 11:33:01 1996  Ulrich Drepper  <drepper@cygnus.com>

	* elf/Makefile ($objpfx)ldd) Substitute $(version) for @VERSION@.
	(distribute): Add ldd.bash.in.
	* elf/ldd.sh.in: Process --help and --version parameter.
	Correct comments.
	* elf/ldd.bash.in: New file.

	* stdlib/stdlib.h: Add prototype for clearenv.
	* sysdeps/generic/setenv.c: Add implementation of clearenv.
	(setenv): Handle __environ == NULL correctly.
	* sysdeps/stub/setenv.c: Add stub definition for unsetenv and
	clearenv.

	* sysdeps/generic/putenv.c: Correct layout to fit in libit.
	* sysdeps/generic/setenv.c: Likewise.
	* stdlib/strtol.h: Likewise.

	* time/sys/time.h: Define __need_timeval and include <timebits.h>.
	Remove definition of struct timeval.
	* sysdeps/stub/timebits.h [__need_timeval]: Define struct timeval
	using `time_t' for members.
	* sysdeps/unix/sysv/linux/timebits.h [__need_timeval]: Likewise.
	* sysdeps/unix/sysv/linux/alpha/timebits.h: New file.  Same
	as old Linux specific version.

	* string/argz.h: Use __const in definitions.
	* inet/herrno.c: Don't define __h_errno, only h_errno otherwise the
	__syscall_error defined.
	TRACE_MODE.
	Craig Metz.
	arithmetic.
	buggy and more competent people work on a usable version which is
	distributed separately.
	`finitel'.
	better message if it is not available.
	whether read failed.
	PSEUDO_END macro.
	Especially on the currently supported ELF systems the nlist
	function comes with the libelf.
	"$(i18ndir)/charmaps".
	net/if_arp.h, and net/route.h.
	version.
	EXTERN_PARSER is defined.
	set errno (to ENOMEM).
	nothing is found.  This guarantees all subsequent calls behave
	the same.
	the file even if no `era's are specified.
	pointers.
	_llseek to _llseek (not llseek).
	Initialize `result'.
	end_alt_digits.
	__libc_force_cancel_wrapper when compiling reentrant version.
	a weak alias.
	make tcdrain a weak alias.
	lseek, open, read, and write to have __libc_ prefix and make old
	names a weak alias.
	to fpathconf.
	__libc_setlocale_lock.
	ld.so.preload.  Suggested by David Engel <david@elo.ods.com>.
	on the same device as the password file.
	variable.
	to lock when passing it to __libc_lock_init macro.
	sysdep.h to the top outside of #ifndef PIC.  Don't include errnos.h.
	Use the ENTRY macro.
	9th field.
	and sys/vt.h.
	`_dl_start' so that linking fails if this file should ever be used
	in ld.so.
	RMS' last standard revision.
	(sysdep_headers): Remove sys/sysinfo.h.
	match files in the sysdeps hierachy (welcome back,
	sys/syscall.h!).
	categories which succeeded to load after a wrong or missing data
	file was observed.
	_IO_flockfile and _IO_funlockfile resp.
	all three versions of the math function.
	non-trivial inline functions.
	rpath-link so that running the check finds the new library.
	daylight saving, timezone by time zone.
	syscall_error handler for reentrant libc.
	warning.
	_IO_getc_unlocked.
	in version information banner.
	clearerr_u, feof_u, ferror_u, fputc_u, getc_u, getchar_u,
	iofflush_u, putc_u, putchar_u, ioflockfile.
	using __errno_location function.
	syscall_error handler for reentrant libc.
	definition of function itself.
	funlockfile.
	_malloc_loc.
	but _POSIX_THREAD_DESTRUCTOR_ITERATIONS.
	Add macro `errno' to get thread specific variable.
	__errno_location function.
	* malloc/free.c (free): __lib_malloc_lock -> __libc_malloc_lock.
	case, so don't prepend uppercase `ISO' for only numeric arg.
	call to __libc_lock_lock.
	sys/sysmacros.h.  Reported by Curtiss <1CMC3466@IBM.MTSAC.EDU>.
	stamp file.
	generating stamp file.
	implementation.
	`decimal' char is 0.
	noexpr to "^[nN]"; this conforms to POSIX.2.
	conform to POSIX.2.
	mon_grouping, int_frac_digits, frac_digits, p_cs_precedes,
	p_sep_by_space, n_cs_precedes, n_sep_by_space, p_sign_posn, and
	n_sign_posn to CHAR_MAX, as required by the POSIX Standard.
	variable.
	this changes the global state for `localtime' and `gmtime'.  Use
	`__localtime_r'/`__gmtime_r' instead.
	state.
	getutid_r() fails with ESRCH.  Reported by Miquel van Smoorenburg.
	for "Jensen" so _bus_base() returns 0 on that platform.  Use
	_bus_base_sparse() to determine base address of sparse memory.
	are now in $P/stdio-common.pot.
	script at run time, not configure time.
	warning.
	sorted.
	inet_net_pton, inet_net.
	value of sprintf.
	functions instead of BSD `b*' functions.
	$(objpfx)/mach-syscalls.mk.
	<marcus@sysc.pdx.edu> for the patch.)
	before returning.  Reported by Miles Bader.
	__BEGIN_DECLS/__END_DECLS up so ntohl() et al are bracketed as
	well.
	This is not a gross hack, after all---for compatibility,
	getlogin() really should check fd 0 only and not try to base its
	operation on the controlling tty.
	change utmp_data from static to auto.
	_IO_file_flags.  It's the same as _flags.
	call is only a stub.
	Mikasa.
	pointer as __const.
	segfault when called with an N that is not a multiple of four and
	src[N-1]=='\0'.
	try again with SOCK_STREAM (the Linux syslogd uses a socket of the
	latter type).
	terminator as a record-delimiter.  If __send(LogFile) fails,
	`getutline_r'.
	`setutline_r'.
	of `vscanf'.
	name a weak alias.
	typo.
	initialized in init-first.c.  Some actions in the libc work
	different when libc is static or dynamic.
	`__libc_is_static' variable to determine whether call to
	`personality' and `setfpucw' is necessary.  When done set variable
	to +-1 depending on library type.
	`__libc_enable_secure' instead of calling `get{,e}{g,u}id()' to
	determine whether it's a SET[UG]ID program.
	(open_file): New function, contents mostly from __open.
	LD_TRACE_LOADED_OBJECTS is set.
	n)' equivalent to `strncpy (d, s, n), d += strnlen (d, n)'.
	from the USA any software that even makes it easy to drop in an
	encryption module of foreign origin.
	old code would have failed on a big-endian 64-bit architecture).
	Remove gratitous parentheses around return expressions.
	not int.
	ustatbits.h.
	alphabetically correct place.  Mention ustat.
	record always gets appended at end of file (wtmp is a log file,
	after all).  Set ut_type to DEAD_PROCESS if name is empty.
	ut_line matches and type is either USER_PROCESS or LOGIN_PROCESS.
	avoid duplicate declarations.
	word extends right up to rmargin.
	point_col ssize_t.
	to fiddle __put_limit in conjunction with __linebuf_active.
	of, not the ones he is _not_ a member of.
	instead of a local function.  The latter are difficult to debug
	and slow to execute on certain platforms.
	place of sizeof (dev).  The size of a literal string includes the
	NUL byte.
	entry.  Return 1 on error, not -1.
	shift amount for Jensen must be 5 not 4.
	for send and connect syscalls.
	signed<->unsigned warnings.
	variable name, so new a libc with new requirements won't fail to
	notice an insufficient Linux version.
	PENDIN, NOFLSH): Undefine these at start if they are already
	defined to avoid collision with termbits.h.
	error is 0.  The "placeholder" entries recently added to
	memcpy for possibly overlapping strings.
	instead of weak_symbol (NAME) after the defn.
	necessary using current implementation of memcpy, but...).
	Move struct timespec defn outside [_TIME_H] so it can be got with
	#define __need_timespec.
	__connect instead of connect to avoid name-space collisions (e.g.,
	with psgetty).
	function ctype_is_charmap to ctype_is_charconv.
	charconv.
	charconv.
	lables according to this.
	warnings.
	actually do something.
	sysdeps/unix/sysv/linux/m68k/init-first.h,
	sysdeps/unix/sysv/linux/i386/init-first.h: New files.
	init-first.h to make abstract machine dependent parts of
	typo/extraneous whitespace.
	check-for-pending signals code, release _hurd_siglock before
	jumping to deliver_pending.
	size_t.
	soname of a loaded object, use that object.
	if libnss_dns.so module for DNS name lookup in NSS service.
	guessing to not assume p_vaddr of first load cmd is zero.
	only for ?s, not for *s.  Fix from Chet Ramey.
	about currently used character set.
	name `MAX_IOVEC'.  Instead use standard name `UIO_MAXIOV'.
	(xdrrec_getlong), sunrpc/xdr_mem.c (xdrmem_getlong): Make sure
	appropriate sign-extension is performed on machines with
	sizeof(long) > 4.
	sizeof(int)<sizeof(long), we need to go through a temporary
	variable.
	in efect.
	volatile to avoid "might get clobbered by longjmp" warning.
	unless _LOOSE_KERNEL_NAMES is in effect (which, with high
	probability is a sure loser).
	sysdeps/unix/sysv/linux/alpha/brk.S,
	sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
	sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
	sysdeps/unix/sysv/linux/alpha/llseek.S,
	sysdeps/unix/sysv/linux/alpha/sigsuspend.S,
	sysdeps/unix/sysv/linux/alpha/syscall.S: Rename syscall_error to
	__syscall_error to avoid intruding application name space.
	sysdeps/unix/geteuid.S, sysdeps/unix/getppid.S,
	sysdeps/unix/execve.S, sysdeps/unix/fork.S,
	sysdeps/unix/syscall.S: Terminate syscall with PSEUDO_END.
	(PSEUDO_END): Rename END() to PSEUDO_END().
	to PSEUDO_END to improve branch-prediction.  Include .frame
	directive to make syscalls debugabble.
	sysdeps/unix/sysv/linux/alpha/brk.S: Use ldiq instead of ldi since
	latter is illegal under DEC Unix.
	as well.
	EWOULDBLOCK -> EAGAIN mapping was unnecessary since
	EWOULDBLOCK==EAGAIN under DEC Unix and Linux/Alpha).
	address register in the .frame directive.
	avoid RPC definitions of INADDR_LOOPBACK and/or MAXHOSTNAMELEN.
	compilable under c++.
	as unsigned long, not as int (to avoid incorrect int->long
	promotion).

1 files changed, 7 insertions, 0 deletions

diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index d11b8bf73b..b43c170951 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -382,6 +382,13 @@ extern int setenv __P ((__const char *__name, __const char *__value,
 extern void unsetenv __P ((__const char *__name));
 #endif
 
+#ifdef	__USE_MISC
+/* The `clearenv' was planned to be added to POSIX.1 but probably
+   never made it.  Nevertheless the POSIX.9 standard (POSIX bindings
+   for Fortran 77) requires this function.  */
+extern int clearenv __P ((void));
+#endif
+
 /* Execute the given line as a shell command.  */
 extern int system __P ((__const char *__command));