Update.

1997-09-11 04:36  Ulrich Drepper  <drepper@cygnus.com>

	* db2/db_int.h: Define __set_errno if not yet available.
	* db2/btree/bt_rec.c: Use __set_errno to set errno value.
	* db2/clib/getlong.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/db185/db185_int.h: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log_archive.c: Likewise.

	* elf/dl-profile.c: Implement mcount function.

	* gmon/gmon.c: Use __profil not profil because of namespace pollution.
	* gmon/mcount.c: Remove BSD kernel code.
	Use compare&swap instruction if possible to change state variable.
	Optimize frompc folding.
	* gmon/sys/gmon.h (struct gmonparam): Change state field to long int.
	* sysdeps/i386/i486/atomicity.h: New file.
	* sysdeps/stub/atomicity.h: New file.
	* sysdeps/mach/hurd/profil.c: Define function as __profil and make
	profil weak alias.
	* sysdeps/posix/profil.c: Likewise.

	* string/bits/string2.h: New file.
	* include/bits/string2.h: New file.
	* string/Makefile (routines): Add mempcpy.
	(tests): Add inl-tester.
	Remove _D__NO_STRING_INLINES from CFLAGS-* variables.
	* sysdeps/generic/mempcpy.c: New file.
	* sysdeps/generic/memccpy.c: Undef function name to enable definition
	as macro.
	* sysdeps/generic/memchr.c: Likewise.
	* sysdeps/generic/memcmp.c: Likewise.
	* sysdeps/generic/memmem.c: Likewise.
	* sysdeps/generic/memmove.c: Likewise.
	* sysdeps/generic/strcat.c: Likewise.
	* sysdeps/generic/strchr.c: Likewise.
	* sysdeps/generic/strcmp.c: Likewise.
	* sysdeps/generic/strcpy.c: Likewise.
	* sysdeps/generic/strcspn.c: Likewise.
	* sysdeps/generic/strlen.c: Likewise.
	* sysdeps/generic/strncat.c: Likewise.
	* sysdeps/generic/strncmp.c: Likewise.
	* sysdeps/generic/strncpy.c: Likewise.
	* sysdeps/generic/strpbrk.c: Likewise.
	* sysdeps/generic/strrchr.c: Likewise.
	* sysdeps/generic/strsep.c: Likewise.
	* sysdeps/generic/strspn.c: Likewise.
	* sysdeps/generic/strstr.c: Likewise.
	* sysdeps/generic/strtok.c: Likewise.
	* sysdeps/generic/strtok_r.c: Likewise.
	* sysdeps/i386/memset.c: Likewise.
	* sysdeps/i386/bits/string.h: Correct a few types and constraints.
	* sysdeps/i386/i486/bits/string.h: Heavy rewrites and optimizations.
	* string/stratcliff.c: Undefine __USE_STRING_INLINES.
	* string/tst-strlen.c: Likewise.
	* string/string.h: Add prototype for mempcpy.  Include bits/string2.h
	header always if optimizing.
	* intl/dcgettext.c: Don't unconditionally define stpcpy, only if not
	yet defined.
	* intl/l10nflist.c: Likewise.

	* string/tester.c: Add copyright and make little cleanups.

	* inet/test_ifindex.c: Change type of ni variable to unsigned int.

	* locale/programs/ld-ctype.c (struct locale_ctype_t): Change type
	of fields map_collection_max and map_collection_act to size_t.

	* nss/libnss_files.map: Group entries.

	* posix/unistd.h: Add prototype for __setpgid and __profil.

	* sysdeps/generic/crypt.h: Declare __crypt_r.

	* sysdeps/i386/bits/select.h: Fix fatal bugs, use correct casts now.

	* sysdeps/i386/fpu/bits/mathinline.h (isgreater, isgreaterequal,
	isless, islessequal, islessgreater, isunordered): Optimize a bit.

	* sysdeps/stub/ftruncate.c: Include missing header for prototype.
	* sysdeps/stub/getdents.c: Likewise.
	* sysdeps/stub/reboot.c: Likewise.
	* sysdeps/stub/swapon.c: Likewise.
	* sysdeps/stub/syscall.c: Likewise.
	* sysdeps/stub/ualarm.c: Likewise.
	* sysdeps/stub/usleep.c: Likewise.

	* sysdeps/unix/sysv/linux/if_index.c: Don't compile or use opensock
	if SIOGIFINDEX and SIOGIFNAME are not defined.

	* sysdeps/unix/sysv/linux/net/if.h: Add IFF_PORTSEL and IFF_AUTOMEDIA
	according to recent kernel changes.

1997-09-10 21:32  Klaus Espenlaub  <kespenla@student.informatik.uni-ulm.de>

	* Makeconfig: Use $(have-initfini) instead of $(elf) to figure out
	the installed name of the startup code.
	(common-generated): Add version.mk.
	* Makefile (distclean-1): Add glibcbug.
	* Makerules: Replace -lgcc by $(gnulib).
	* catgets/Makefile (generated): Add xmalloc.o.
	* csu/Makefile (generated): Replace align.h and end.h by defs.h to
	match the generated file.
	* manual/Makefile (mostlyclean): Add stub-manual and stamp.o.
	(realclean): Changed to remove chapters-incl[12].
	* po/Makefile (realclean): New rule to remove the generated .mo files.
	* time/Makefile: Only include zonefile dependencies if $(no_deps) is
	not true to avoid make clean failure when directory time doesn't exist
	yet.
	(generated): Add tzselect.

	* stdio/fgets.c (fgets): Add casts to reduce gcc warning noise.
	* stdio/internals.c (flushbuf): Likewise.
	* stdio/linewrap.c (lwupdate): Likewise.
	* stdio/memstream.c (enlarge_buffer): Likewise.
	* stdio-common/vfscanf.c (_IO_vfscanf): Likewise.
	* time/tzset.c (compute_change): Likewise.
	* misc/init-misc.c (__init_misc): Only declare static if HAVE_GNU_LD
	is defined.
	* sysdeps/posix/pipestream.c (FUNC): Change to generate ANSI C style
	functions.
	* sysdeps/stub/init-posix.c: Likewise.
	* sysdeps/stub/profil.c: Likewise.
	* munch-tmpl.c (__libc_init): Convert to ANSI C style declaration to
	reduce gcc warning noise.
	* stdio/glue.c (_filbuf, _flsbuf): Likewise.
	* stdio/obstream.c (grow, seek, input, init_obstream): Likewise.
	* stdio/vasprintf.c (enlarge_buffer): Likewise.
	* sysdeps/generic/sysd-stdio.c (__stdio_read, __stdio_write,
	__stdio_seek, __stdio_close, __stdio_fileno, __stdio_open,
	__stdio_reopen): Likewise.
	* sysdeps/posix/defs.c (_cleanup): Likewise.
	* time/offtime.c (__offtime): Add cast.

	* posix/getopt.c: Don't use text_set_element if not defined.

	* configure.in: Provide a check for underscores before user labels
	that works even when the compiler used for building doesn't work
	(like when there is no C library).  Use the old way if the compiler
	works.

1997-09-10 05:08  David S. Miller  <davem@caip.rutgers.edu>

	* sysdeps/unix/sysv/linux/sparc/bits/ioctls.h: The TC* ioctls use
	'T' not 't' on SparcLinux.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h: tcflag_t is 32 bits.

	* sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add aliases for
	_longjmp and siglongjmp.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/stdio.h: Add format attributes to the extra printf and
	scanf like functions.
	* stdio/stdio.h: Likewise.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r):
	Print tablename_val, not tablename_len.

	* nis/nss_nisplus/nisplus-ethers.c (_nss_nisplus_getntohost_r):
	Use sprintf instead of sprintf, the string always fits.
	* nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_gethostbyaddr_r):
	Likewise.
	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r):
	Likewise.
	* nis/nss_nisplus/nisplus-proto.c
	(_nss_nisplus_getprotobynumber_r): Likewise.
	* nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_getrpcbynumber_r):
	Likewise.
	* nis/nss_nisplus/nisplus-service.c
	(_nss_nisplus_getservbynumber_r): Likewise.

	* nis/nss_nisplus/nisplus-alias.c (_nss_create_tablename): Use
	__stpcpy, __stpncpy and __strdup instead of public names.
	* nis/nss_nisplus/nisplus-ethers.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-grp.c (_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-hosts.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-netgrp.c (_nss_nisplus_parse_netgroup):
	Likewise.
	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_parse_netent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-proto.c (_nss_nisplus_parse_protoent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-pwd.c (_nss_create_tablename):
	Likewise.
	* nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_parse_rpcent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-service.c (_nss_nisplus_parse_servent):
	Likewise.
	(_nss_create_tablename): Likewise.
	* nis/nss_nisplus/nisplus-spwd.c (_nss_create_tablename):
	Likewise.

	* libc.map: Export __stpcpy and __strdup.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c,
	CFLAGS-test-ldouble.c): Pass -ffloat-store to avoid excessive
	precision.

1997-09-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* include/rpc/auth_des.h: New file.

1997-09-09  Paul Eggert  <eggert@twinsun.com>

	* time/mktime.c (__mktime_internal): Declare sec_requested even if
	!LEAP_SECONDS_POSSIBLE, since it's needed at the end when checking
	for time_t overflow.

1997-09-09 22:11  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/posix/getcwd.c: Correct test for too small buffer.
	Reported by Erik Troan <ewt@redhat.com>.

	* elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>.
	* elf/dl-open.c: Likewise.

1997-09-07 17:09  Richard Henderson  <rth@cygnus.com>

	* sysdeps/alpha/Makefile: Kill setjmp_aux.
	* sysdeps/alpha/bits/setjmp.h: Rewrite in terms of an array.
	* sysdeps/alpha/__longjmp.c: Remove.
	* sysdeps/alpha/setjmp_aux.c: Remove.
	* sysdeps/alpha/__longjmp.S: New file.
	* sysdeps/alpha/bsd-_setjmp.S: Stub out.
	* sysdeps/alpha/bsd-setjmp.S: Likewise.
	* sysdeps/alpha/setjmp.S: Do the work; don't call __setjmp_aux.
	Move _setjmp and setjmp from bsd-*.S.

1997-09-06  20:20  Ulrich Drepper  <drepper@cygnus.com>

	* include/rpc/auth.h: New file.
	* include/rpc/auth_unix.h: New file.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	Fix gmtime so that it reports leap seconds when TZ
	indicates that leap seconds are desired.

	* time/gmtime.c (<stddef.h>): Remove unnecessary include.
	(gmtime): Put after gmtime_r, to help the compiler inline.
	(__tz_convert): New decl.
	(gmtime_r): Use __tz_convert instead of __offtime,
	so that leap seconds are handled correctly.

	* time/localtime.c (<errno.h>, <libc-lock.h>): Remove includes that
	are now unnecessary.
	(__tzset_internal, __tz_compute, __tzfile_compute, __use_tzfile,
	__tzset_lock): Remove extern decls that are now unnecessary.
	(localtime_internal): Moved to __tz_convert in tzset.c.
	so that localtime and gmtime can both use it easily.
	(localtime): Put after localtime_r, to help the compiler inline.
	(localtime_r): Use __tz_convert instead of localtime_internal.

	* time/strftime.c (__tz_compute): Remove unused (and now incorrect)
	decl.

	* time/tzfile.c (__tzfile_compute): New arg USE_LOCALTIME.

	* time/tzset.c (<errno.h>): Include.
	(_tmbuf): New decl.
	(__tzfile_compute): New function.
	(tz_compute): Renamed from __tz_compute.  No longer extern.
	Remove redundant call to tzset_internal.
	(tzset_internal): Renamed from __tzset_internal.  No longer extern.
	(tzset_lock): Renamed from __tzset_lock.  No longer extern.
	(__tz_convert): New function, containing functionality of old
	localtime_internal function, plus locking and optional UTC.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	* time/tzfile.c (__tzfile_read): Don't read a file if TZ is the empty
	string, just use UTC without leap seconds.  This is for compatibility
	with the Olson code.

1997-09-06  Paul Eggert  <eggert@twinsun.com>

	* time/tzset.c (__tzname_max): Lock tz data structures before
	invoking tzset_internal.

	* time/tzfile.c: Define compute_tzname_max statically.

1997-09-07 10:57  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/nis_call.c: Remove not longer necessary HAVE_SECURE_RPC ifdefs.
	* nis/nis_intern.h: Likewise.
	* nis/nss_nis/nis-publickey.c: Likewise.
	* nis/nss_nisplus/nisplus-publickey.c: Likewise.
	* nis/ypclnt.c: Likewise.

	* sunrpc/auth_des.c: Don't dereference NULL pointer,
	initialize ad->ad_timediff.

	* sunrpc/auth_none.c: Don't define our own prototypes, use the one
	from the header files.
	* sunrpc/auth_unix.c: Likewise.
	* sunrpc/clnt_raw.c: Likewise.
	* sunrpc/clnt_tcp.c: Likewise.
	* sunrpc/rpc_cmsg.c: Likewise.

	* sunrpc/key_call.c: Fix signal handling.

	* sunrpc/openchild.c: Don't use /bin/sh to start /usr/etc/keyenvoy,
	or we will get a deadlock with NIS+.

	* sunrpc/rpc/auth.h: Add prototype for xdr_opaque_auth, don't define
	HAVE_SECURE_RPC.

1997-09-07 15:51  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/bits/select.h [__GNUC__] (__FD_ZERO, __FD_SET, __FD_CLR,
	__FD_ISSET): Use correct casts to address array correctly.
	Reported by urbanw@cs.umu.se.

1997-09-07 05:07  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>.
	* elf/dl-open.c: Likewise.
	* sysdeps/i386/memset.c: Undefine memset in case the header with the
	optimized functions is included.
	Patches by NIIBE Yutaka <gniibe@mri.co.jp>.

	* sysdeps/i386/bits/string.h [__PIC__] (strcspn, strspn, strpbrk,
	strsep): Use register for second parameter.
	* sysdeps/i386/i486/bits/string.h: Likewise.
	Reported by NIIBE Yutaka <gniibe@mri.co.jp>.

1997-09-03 09:48  Geoff Keating  <geoffk@ozemail.com.au>

	* math/libm-test.c: Change various tolerances to match what the
	tested routines can actually provide.

	* math/Makefile: Add new tests.
	* math/atest-sincos.c: New file.
	* math/atest-exp.c: New file.

	* csu/Makefile: Give initfini.s and initfiniS.s their own
	CFLAGS-* macros so they can be overridden.
	* sysdeps/powerpc/Makefile [subdir=csu]: Override flags for
	initfiniS.s to use -fpic instead of -fPIC, because the sed script
	breaks otherwise.

	* sysdeps/powerpc/Makefile [build-shared]: Use -fpic not -fPIC for
	efficiency.

	* sysdeps/powerpc/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
	Don't use register 0, to let _mcount be in a shared object.

	* sysdeps/powerpc/dl-machine.h: Use full sentences in comments.
	Generally clean up.  Suppress some code we don't need when relocating
	ld.so.
	* sysdeps/powerpc/test-arith.c: Change loop indices to size_t when
	appropriate to suppress gcc warning.
	* resolv/res_send.c: Suppress warning.
	* sunrpc/xdr_sizeof.c: Suppress warning.

	* FAQ: Add ppc-linux.
	* manual/maint.texi: Add ppc-linux.  Explain that gcc can't build it
	yet.

	* sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Correct for
	current kernels.

1997-08-15 07:45  Geoff Keating  <geoffk@ozemail.com.au>

	* stdlib/fmtmsg.c: Use two parameters for __libc_once_define.
	* sysdeps/i386/machine-gmon.h: Correct typo.

	* sysdeps/unix/sysv/linux/powerpc/bits/mman.h: Change to match
	kernel.

	* sysdeps/generic/dl-sysdep.c: Add hook for bizzare PPC argument hack.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Rewrite to use
	sysdeps/linux/dl-sysdep.c.

	* sysdeps/powerpc/Makefile [subdir=gmon]: Compile ppc-mcount.
	* sysdeps/powerpc/machine-gmon.h: Use ppc-mcount.
	* sysdeps/powerpc/ppc-mcount: New file.

	The following are mostly changes to allow profiling:
	* sysdeps/powerpc/add_n.S: Added.
	* sysdeps/powerpc/add_n.s: Removed.
	* sysdeps/powerpc/addmul_1.S: Added.
	* sysdeps/powerpc/addmul_1.s: Removed.
	* sysdeps/powerpc/bsd-_setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/bsd-setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/lshift.S: Added.
	* sysdeps/powerpc/lshift.s: Removed.
	* sysdeps/powerpc/memset.S: Added.
	* sysdeps/powerpc/memset.s: Removed.
	* sysdeps/powerpc/mul_1.S: Added.
	* sysdeps/powerpc/mul_1.s: Removed.
	* sysdeps/powerpc/rshift.S: Added.
	* sysdeps/powerpc/rshift.s: Removed.
	* sysdeps/powerpc/s_copysign.S: Use ENTRY, END, weak_alias macros.
	* sysdeps/powerpc/s_fabs.S: Use ENTRY, END, weak_alias macros.
	* sysdeps/powerpc/setjmp.S: Use JUMPTARGET macro.
	* sysdeps/powerpc/strchr.S: Added.
	* sysdeps/powerpc/strchr.s: Removed.
	* sysdeps/powerpc/strcmp.S: Added.
	* sysdeps/powerpc/strcmp.s: Removed.
	* sysdeps/powerpc/strlen.S: Added.
	* sysdeps/powerpc/strlen.s: Removed.
	* sysdeps/powerpc/sub_n.S: Added.
	* sysdeps/powerpc/sub_n.s: Removed.
	* sysdeps/powerpc/submul_1.S: Added.
	* sysdeps/powerpc/submul_1.s: Removed.
	* sysdeps/unix/sysv/linux/powerpc/_exit.S: Removed.
	* sysdeps/unix/sysv/linux/powerpc/brk.S: Added.
	* sysdeps/unix/sysv/linux/powerpc/brk.c: Removed.
	* sysdeps/unix/sysv/linux/powerpc/clone.S: Use new macros. Fix
	various bugs. Document that it isn't tested.
	* sysdeps/unix/sysv/linux/powerpc/sigreturn.S: Make look like
	sysdeps/unix/_exit.S.
	* sysdeps/unix/sysv/linux/powerpc/socket.S: Use new macros.
	* sysdeps/unix/sysv/linux/powerpc/syscall.S: Use new macros.
	* sysdeps/unix/sysv/linux/powerpc/sysdep.h: Define some new macros
	to make assembler (possibly) more portable, allow profiling, etc.

7 files changed, 373 insertions, 22 deletions

diff --git a/string/Makefile b/string/Makefile
index ac04557ddc..8596bc1b24 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -30,7 +30,7 @@ routines	:= strcat strchr strcmp strcoll strcpy strcspn		\
 		   strncat strncmp strncpy				\
 		   strrchr strpbrk strsignal strspn strstr strtok	\
 		   strtok_r strxfrm memchr memcmp memmove memset	\
-		   bcopy bzero ffs stpcpy stpncpy			\
+		   mempcpy bcopy bzero ffs stpcpy stpncpy		\
 		   strcasecmp strncase strcasecmp_l strncase_l		\
 		   memccpy memcpy wordcopy strsep			\
 		   swab strfry memfrob memmem				\
@@ -40,17 +40,19 @@ routines	:= strcat strchr strcmp strcoll strcpy strcspn		\
 		   envz basename					\
 		   strcoll_l strxfrm_l
 
-tests		:= tester testcopy test-ffs tst-strlen stratcliff \
-	           tst-svc
+tests		:= tester inl-tester testcopy test-ffs tst-strlen	\
+		   stratcliff tst-svc
 distribute	:= memcopy.h pagecopy.h tst-svc.expect
 
 
 include ../Rules
 
 tester-ENV = LANGUAGE=C
-CFLAGS-tester.c = -fno-builtin -D__NO_STRING_INLINES
-CFLAGS-tst-strlen.c = -fno-builtin -D__NO_STRING_INLINES
-CFLAGS-stratcliff.c = -fno-builtin -D__NO_STRING_INLINES
+inl-tester-ENV = LANGUAGE=C
+CFLAGS-tester.c = -fno-builtin
+CFLAGS-inl-tester.c = -fno-builtin
+CFLAGS-tst-strlen.c = -fno-builtin
+CFLAGS-stratcliff.c = -fno-builtin
 
 tests: $(objpfx)tst-svc.out
 	cmp tst-svc.expect $(objpfx)tst-svc.out
diff --git a/string/bits/string2.h b/string/bits/string2.h
new file mode 100644
index 0000000000..b943fe9aa0
--- /dev/null
+++ b/string/bits/string2.h
@@ -0,0 +1,292 @@
+/* Machine-independant string function optimizations.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_STRING2_H
+#define _BITS_STRING2_H	1
+
+/* Unlike the definitions in the header <bits/string.h> the
+   definitions contained here are not optimizing down to assembler
+   level.  These optimizations are not always a good idea since this
+   means the code size increases a lot.  Instead the definitions here
+   optimize some functions in a way which does not dramatically
+   increase the code size and which does not use assembler.  The main
+   trick is to use GNU CC's `__builtin_constant_p' function.
+
+   Every function XXX which has a defined version in
+   <bits/string.h> must be accompanied by a have _HAVE_STRING_ARCH_XXX
+   to make sure we don't get redefinitions.
+
+   We must use here macros instead of inline functions since the
+   trick won't work with the later.  */
+
+#ifdef __cplusplus
+# define __STRING_INLINE inline
+#else
+# define __STRING_INLINE extern __inline
+#endif
+
+/* We need some more types.  */
+#include <bits/types.h>
+
+
+/* Copy SRC to DEST.  */
+#ifndef _HAVE_STRING_ARCH_strcpy
+# define strcpy(dest, src) \
+  (__extension__ (__builtin_constant_p (src)				      \
+		  ? (strlen (src) + 1 <= 8				      \
+		     ? __strcpy_small (dest, src, strlen (src) + 1)	      \
+		     : (char *) memcpy (dest, src, strlen (src) + 1))	      \
+		  : strcpy (dest, src)))
+
+__STRING_INLINE char *
+__strcpy_small (char *__dest, __const char *__src, size_t __srclen)
+{
+  register char *__tmp = __dest;
+  switch (__srclen)
+    {
+    case 7:
+      *((__uint16_t *) __tmp)++ = *((__uint16_t *) __src)++;
+    case 5:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+      *((unsigned char *) __tmp) = '\0';
+      break;
+
+    case 8:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+    case 4:
+      *((__uint32_t *) __tmp) = *((__uint32_t *) __src);
+      break;
+
+    case 6:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+    case 2:
+      *((__uint16_t *) __tmp) = *((__uint16_t *) __src);
+      break;
+
+    case 3:
+      *((__uint16_t *) __tmp)++ = *((__uint16_t *) __src)++;
+    case 1:
+      *((unsigned char *) __tmp) = '\0';
+      break;
+
+    default:
+      break;
+    }
+  return __dest;
+}
+#endif
+
+
+/* Copy SRC to DEST, returning pointer to final NUL byte.  */
+#ifdef __USE_GNU
+# ifndef _HAVE_STRING_ARCH_stpcpy
+#  define __stpcpy(dest, src) \
+  (__extension__ (__builtin_constant_p (src)				      \
+		  ? (strlen (src) + 1 <= 8				      \
+		     ? __stpcpy_small (dest, src, strlen (src) + 1)	      \
+		     : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\
+		  : __stpcpy (dest, src)))
+/* In glibc we use this function frequently but for namespace reasons
+   we have to use the name `__stpcpy'.  */
+#  define stpcpy(dest, src) __stpcpy (dest, src)
+
+__STRING_INLINE char *
+__stpcpy_small (char *__dest, __const char *__src, size_t __srclen)
+{
+  register char *__tmp = __dest;
+  switch (__srclen)
+    {
+    case 7:
+      *((__uint16_t *) __tmp)++ = *((__uint16_t *) __src)++;
+    case 5:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+      *((unsigned char *) __tmp) = '\0';
+      return __tmp;
+
+    case 8:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+    case 4:
+      *((__uint32_t *) __tmp) = *((__uint32_t *) __src);
+      return __tmp + 3;
+
+    case 6:
+      *((__uint32_t *) __tmp)++ = *((__uint32_t *) __src)++;
+    case 2:
+      *((__uint16_t *) __tmp) = *((__uint16_t *) __src);
+      return __tmp + 1;
+
+    case 3:
+      *((__uint16_t *) __tmp)++ = *((__uint16_t *) __src)++;
+    case 1:
+      *((unsigned char *) __tmp) = '\0';
+      return __tmp;
+
+    default:
+      break;
+    }
+  /* This should never happen.  */
+  return NULL;
+}
+# endif
+#endif
+
+
+/* Copy no more than N characters of SRC to DEST.  */
+#ifndef _HAVE_STRING_ARCH_strncpy
+# if defined _HAVE_STRING_ARCH_memset && defined _HAVE_STRING_ARCH_mempcpy
+#  define strncpy(dest, src, n) \
+  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
+		  ? (strlen (src) + 1 >= ((size_t) (n))			      \
+		     ? (char *) memcpy (dest, src, n)			      \
+		     : (memset (__mempcpy (dest, src, strlen (src)), '\0',    \
+				n - strlen (src)),			      \
+			dest))						      \
+		  : strncpy (dest, src, n)))
+# else
+#  define strncpy(dest, src, n) \
+  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
+		  ? (strlen (src) + 1 >= ((size_t) (n))			      \
+		     ? (char *) memcpy (dest, src, n)			      \
+		     : strncpy (dest, src, n))				      \
+		  : strncpy (dest, src, n)))
+# endif
+#endif
+
+
+/* Append no more than N characters from SRC onto DEST.  */
+#ifndef _HAVE_STRING_ARCH_strncat
+# ifdef _HAVE_STRING_ARCH_strchr
+#  define strncat(dest, src, n) \
+  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
+		  ? (strlen (src) < ((size_t) (n))			      \
+		     ? strcat (dest, src)				      \
+		     : (memcpy (strchr (dest, '\0'), src, n), dest))	      \
+		  : strncat (dest, src, n)))
+# else
+#  define strncat(dest, src, n) \
+  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
+		  ? (strlen (src) < ((size_t) (n))			      \
+		     ? strcat (dest, src)				      \
+		     : strncat (dest, src, n))				      \
+		  : strncat (dest, src, n)))
+# endif
+#endif
+
+
+/* Compare N characters of S1 and S2.  */
+#ifndef _HAVE_STRING_ARCH_strncmp
+# define strncmp(s1, s2, n) \
+  (__extension__ (__builtin_constant_p (s1) && strlen (s1) < ((size_t) (n))   \
+		  ? strcmp (s1, s2)					      \
+		  : (__builtin_constant_p (s2) && strlen (s2) < ((size_t) (n))\
+		     ? strcmp (s1, s2)					      \
+		     : strncmp (s1, s2, n))))
+#endif
+
+
+/* Return the length of the initial segment of S which
+   consists entirely of characters not in REJECT.  */
+#ifndef _HAVE_STRING_ARCH_strcspn
+# define strcspn(s, reject) \
+  (__extension__ (__builtin_constant_p (reject)				      \
+		  ? (((const char *) (reject))[0] == '\0'		      \
+		     ? strlen (s)					      \
+		     : (((const char *) (reject))[1] == '\0'		      \
+			? __strcspn_c1 (s, ((((const char *) (reject))[0]     \
+					     & 0xff) << 8))		      \
+			: strcspn (s, reject)))	      \
+		  : strcspn (s, reject)))
+
+__STRING_INLINE size_t
+__strcspn_c1 (__const char *__s, char __reject)
+{
+  register size_t __result = 0;
+  while (__s[__result] != '\0' && __s[__result] != __reject)
+    ++__result;
+  return __result;
+}
+#endif
+
+
+/* Return the length of the initial segment of S which
+   consists entirely of characters in ACCEPT.  */
+#ifndef _HAVE_STRING_ARCH_strspn
+# define strspn(s, accept) \
+  (__extension__ (__builtin_constant_p (accept)				      \
+		  ? (((const char *) (accept))[0] == '\0'		      \
+		     ? 0						      \
+		     : (((const char *) (accept))[1] == '\0'		      \
+			? __strspn_c1 (s, ((const char *) (accept))[0])	      \
+			: strspn (s, accept)))				      \
+		  : strspn (s, accept)))
+
+__STRING_INLINE size_t
+__strspn_c1 (__const char *__s, char __accept)
+{
+  register size_t __result = 0;
+  /* Please note that __accept never can be '\0'.  */
+  while (__s[__result] == __accept)
+    ++__result;
+  return __result;
+}
+#endif
+
+
+/* Find the first occurrence in S of any character in ACCEPT.  */
+#ifndef _HAVE_STRING_ARCH_strpbrk
+# define strpbrk(s, accept) \
+  (__extension__ (__builtin_constant_p (accept)				      \
+		  ? (((const char *) (accept))[0] == '\0'		      \
+		     ? NULL						      \
+		     : (((const char *) (accept))[1] == '\0'		      \
+			? strchr (s, ((const char *) (accept))[0])	      \
+			: strpbrk (s, accept)))				      \
+		  : strpbrk (s, accept)))
+#endif
+
+
+/* Find the first occurrence of NEEDLE in HAYSTACK.  */
+#ifndef _HAVE_STRING_ARCH_strstr
+# define strstr(haystack, needle) \
+  (__extension__ (__builtin_constant_p (needle)				      \
+		  ? (((const char *) (needle))[0] == '\0'		      \
+		     ? haystack						      \
+		     : (((const char *) (needle))[1] == '\0'		      \
+			? strchr (haystack, ((const char *) (needle))[0])     \
+			: strstr (haystack, needle)))			      \
+		  : strstr (haystack, needle)))
+#endif
+
+
+#ifdef __USE_GNU
+# ifndef _HAVE_STRING_ARCH_strnlen
+extern __inline size_t
+strnlen (__const char *__string, size_t __maxlen)
+{
+  __const char *__end = (__const char *) memchr (__string, '\0', __maxlen);
+  return __end ? __end - __string : __maxlen;
+}
+# endif
+#endif
+
+
+#undef __STRING_INLINE
+
+#endif /* bits/string2.h */
diff --git a/string/inl-tester.c b/string/inl-tester.c
new file mode 100644
index 0000000000..88528e5ed8
--- /dev/null
+++ b/string/inl-tester.c
@@ -0,0 +1,6 @@
+/* We want to test the inline functions here.  */
+
+#define DO_STRING_INLINES
+#undef __USE_STRING_INLINES
+#define __USE_STRING_INLINES 1
+#include "tester.c"
diff --git a/string/stratcliff.c b/string/stratcliff.c
index 6115d2f8db..ae1b7ae0ca 100644
--- a/string/stratcliff.c
+++ b/string/stratcliff.c
@@ -19,6 +19,11 @@
    Boston, MA 02111-1307, USA.  */
 
 #define _GNU_SOURCE 1
+
+/* Make sure we don't test the optimized inline functions if we want to
+   test the real implementation.  */
+#undef __USE_STRING_INLINES
+
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/string/string.h b/string/string.h
index 3cac382529..560638be8e 100644
--- a/string/string.h
+++ b/string/string.h
@@ -171,6 +171,13 @@ extern char *strtok_r __P ((char *__s, __const char *__delim,
    HAYSTACK is HAYSTACKLEN bytes long.  */
 extern __ptr_t memmem __P ((__const __ptr_t __haystack, size_t __haystacklen,
 			    __const __ptr_t __needle, size_t __needlelen));
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+extern __ptr_t __mempcpy __P ((__ptr_t __restrict __dest,
+			       __const __ptr_t __restrict __src, size_t __n));
+extern __ptr_t mempcpy __P ((__ptr_t __restrict __dest,
+			     __const __ptr_t __restrict __src, size_t __n));
 #endif
 
 
@@ -274,21 +281,30 @@ extern char *basename __P ((__const char *__filename));
 #endif
 
 
-/* Some functions might be implemented as optimized inline assembler
-   functions.  Only include this file if we really want them.  */
-#if defined __USE_STRING_INLINES && defined __OPTIMIZE__
-# include <bits/string.h>
-#endif
-
-
-/* Now provide some generic optimizations.  */
 #if defined __GNUC__ && __GNUC__ >= 2 && defined __OPTIMIZE__
-extern __inline size_t
-strnlen (__const char *__string, size_t __maxlen)
-{
-  __const char *__end = (__const char *) memchr (__string, '\0', __maxlen);
-  return __end ? __end - __string : __maxlen;
-}
+/* When using GNU CC we provide some optimized versions of selected
+   functions from this header.  There are two kinds of optimizations:
+
+   - machine-dependent optmizations, most probably using inline
+     assembler code; these could be quite expensive since the code
+     size could increase significantly.
+     These optimizations are not used unless the symbol
+	__USE_STRING_INLINES
+     is defined before including this header
+
+   - machine-independent optimizations which do not increase the
+     code size significantly and which optimize mainly situations
+     where one or more arguments are compile-time constants.
+     These optimizations are used always when the compiler is
+     taught to optimized.  */
+
+/* Get the machine-dependent optimizations if wanted.  */
+# ifdef __USE_STRING_INLINES
+#  include <bits/string.h>
+# endif
+
+/* These are generic optimizations which do not add too much inline code.  */
+# include <bits/string2.h>
 #endif
 
 __END_DECLS
diff --git a/string/tester.c b/string/tester.c
index 0e65442063..dfb1258864 100644
--- a/string/tester.c
+++ b/string/tester.c
@@ -1,6 +1,32 @@
+/* Tester for string functions.
+   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
+
+/* Make sure we don't test the optimized inline functions if we want to
+   test the real implementation.  */
+#if !defined DO_STRING_INLINES
+#undef __USE_STRING_INLINES
+#endif
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -222,7 +248,7 @@ main (void)
 
   (void) strcpy (one, "abcdefgh");
   (void) strncpy (one, "xyz", 2);
-  equal (one, "xycdefgh", 3);		/* Copy cut by count. */
+  equal (one, "xycdefgh", 3);			/* Copy cut by count. */
 
   (void) strcpy (one, "abcdefgh");
   (void) strncpy (one, "xyz", 3);		/* Copy cut just before NUL. */
@@ -231,7 +257,7 @@ main (void)
   (void) strcpy (one, "abcdefgh");
   (void) strncpy (one, "xyz", 4);		/* Copy just includes NUL. */
   equal (one, "xyz", 5);
-  equal (one+4, "efgh", 6);		/* Wrote too much? */
+  equal (one+4, "efgh", 6);			/* Wrote too much? */
 
   (void) strcpy (one, "abcdefgh");
   (void) strncpy (one, "xyz", 5);		/* Copy includes padding. */
diff --git a/string/tst-strlen.c b/string/tst-strlen.c
index 4acd4045f5..c43cb1a4d6 100644
--- a/string/tst-strlen.c
+++ b/string/tst-strlen.c
@@ -1,3 +1,7 @@
+/* Make sure we don't test the optimized inline functions if we want to
+   test the real implementation.  */
+#undef __USE_STRING_INLINES
+
 #include <stdio.h>
 #include <string.h>