1998-03-18 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/opendir.c (__opendir): Don't block on FIFOs etc.
Optimize memmory handling.
* sysdeps/unix/closedir.c: Optmize memory handling.
Sun Dec 22 00:01:27 1996 Ulrich Drepper <drepper@cygnus.com>
* inet/getnetgrent.c: Reformat copyright.
* inet/getnetgrent_r.c (__internal_endnetgrent): Correct comment.
(__internal_getnetgrent): Rename to __internal_getnetgrent_r as
required in change nis/nss_compat/* at Thu Dec 19 14:24:50 1996.
Reported by Thorsten Kukuk <kukuk@weber.uni-paderborn.de>.
* nss/nss_files/files-netgrp.c: Fix typo.
* login/utmp_db.c: Comment out unused variables.
* misc/tst-dirname.c: Provide prototype for main (for now).
* new-malloc/mcheck-init.c: Include <mcheck.h>.
* new-malloc/obstack.c: Provide real prototypes.
* resolv/base64.c (b64_ntop): Use size_t as type of `i', not int.
(b64_pton): Likewise for `tarindex'.
* resolv/nsap_addr.c (inet_nsap_addr): Add cast to prevent warning.
* stdio-common/Makefile: Add CFLAGS-vfprintf.c to prevent warning.
* stdio-common/printf-parse.h: Remove definition of MIN and MAX.
* stdio-common/printf-prs.c: Include <sys/param.h> to get MIN and MAX.
* stdio-common/vfprintf.c: Likewise.
* stdlib/gmp-impl.h: Only define MIN and MAX if not already done.
* stdlib/tst-strtol.c: Don't use -2147483648 as unsigned long value.
* sysdeps/generic/Makefile ($(subdir)=string): Define
CFLAGS-wordcopy.c to prevent warning.
* sysdeps/generic/mul_n.c (mpn_mul_n): Don't define as inline.
* sysdeps/generic/wordcopy.c: De-ANSI-declfy.
* sysdeps/i386/Makefile ($(subdir)=elf): Define CFLAGS-rtld.c
to prevent warning.
* sysdeps/i386/dl-machine.h: Correct copyright.
* sysdeps/unix/closedir.c: Likewise.
* sysdeps/unix/dirstream.h: Likewise.
* sysdeps/unix/opendir.c: Likewise.
* time/tzset.c: Add prototype for __tzset_internal.
* sysdeps/gnu/utmpbits.h (enum utlogin): Comment out since the
way it is supposed to work is not yet known.
(struct utmp): Remove ut_login and ut_syslen field for now.
Sat Dec 21 16:23:54 1996 Ulrich Drepper <drepper@cygnus.com>
* time/strftime.c: Fix another bug in handling flags made it
impossible to use the `-', `_', or `0' flag.
Thu Oct 17 01:55:34 1996 Ulrich Drepper <drepper@cygnus.com>
* sunrpc/Makefile ($(objpfx)rpcsvc/%.h, $(objpfx)x%.c): Write
output to $@T and move to $@ later since the new rpcgen will not
overwrite existing files.
* po/Makefile (libc.pot): Fix typo.
Sun Oct 13 20:52:07 1996 Thorsten Kukuk <kukuk@weber.uni-paderborn.de>
Update rpcgen program to TI-rpc code.
* sunrpc/Makefile (rpcgen-objs): Add rpc_tblout.o and rpc_sample.o.
(distribute): Add proto.h.
* sunrpc/proto.h: New file. Prototypes for all the RPC functions.
* sunrpc/rpc_clntout.c: Change to allow generation of ISO C code.
* sunrpc/rpc_cout.c: Likewise.
* sunrpc/rpc_hout.c: Likewise.
* sunrpc/rpc_main.c: Likewise.
* sunrpc/rpc_parse.c: Likewise.
* sunrpc/rpc_parse.h: Likewise.
* sunrpc/rpc_scan.c: Likewise.
* sunrpc/rpc_scan.h: Likewise.
* sunrpc/rpc_svcout.c: Likewise.
* sunrpc/rpc_util.c: Likewise.
* sunrpc/rpc_util.h: Likewise.
* sunrpc/rpc_tblout.c: New file.
* sunrpc/rpc_sample.c: Likewise.
Thu Oct 17 00:26:20 1996 NIIBE Yutaka <gniibe@mri.co.jp>
* sysdeps/unix/opendir.c: Add semicolon for consistency.
Wed Oct 16 12:26:53 1996 Sven Verdoolaege <skimo@breughel.ufsia.ac.be>
* locale/progams/localedef.c (main): Test with -1 to find out
whether read failed.
Wed Oct 16 14:54:59 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/clone.S: Use JUMPTARGET and
PSEUDO_END macro.
Tue Oct 15 21:27:42 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/sigcontext.h: Removed.
Tue Oct 15 15:52:29 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/clone.S: Add CALL_MCOUNT.
* sysdeps/unix/sysv/linux/m68k/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/sigreturn.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/socket.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/sysdep.S (__errno_location):
Likewise.
* sysdeps/unix/sysv/linux/m68k/syscall.S: Likewise.
Correct generation of system call.
Tue Oct 15 15:13:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makerules (sysd-Makefile): Fix command so that it works in the
subdirectories.
(BUILD_CFLAGS): Change back using $(..) instead of
$(common-objpfx), the latter fails in the toplevel directory when
$(objdir) is relative.
(common-objdir-compile): Run compiler in $(objdir).
* sysdeps/posix/Makefile (mk-stdiolim): Likewise.
Tue Oct 15 23:39:48 1996 Ulrich Drepper <drepper@cygnus.com>
* string/string.h [__USE_SVID]: Add prototype for swab.
* time/sys/time.h [__USE_BSD]: Add prototype for ualarm.
Reported by Andreas Jaeger.
The available nlist implementation is not generally usable.
Especially on the currently supported ELF systems the nlist
function comes with the libelf.
* misc/Makefile (headers): Remove nlist.h.
(routines): Remove nlist.
* Makefile ($(objpfx)version-info.h): Include information about
system the libc is built on in version-info.h file.
* po/Makefile (distribute): Add header.pot.
Tue Oct 15 16:34:15 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* sysdeps/unix/sysv/linux/sleep.c: Include file with prototype.
* sysdeps/unix/sysv/linux/reboot.c: Likewise.
* misc/error.c: Likewise.
Tue Oct 15 22:41:27 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/syscalls.list: Add {get,set}resuid.
Tue Oct 15 08:06:02 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* crypt/Makefiel (rpath-link): Extend search path to current directory.
Fri Oct 11 09:18:06 1996 Sven Verdoolaege <skimo@breughel.ufsia.ac.be>
* sysdeps/i386/i586/strlen.S: Correct handling of prolog for
aligning pointer.
Tue Oct 15 02:13:21 1996 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/vfprintf.c: Don't declare __flockfile as weak.
* crypt/md5-crypt.c (md5_crypt_r): Add cast to prevent warning.
Sun Oct 13 19:16:10 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/sysdep.h (POUND): Macro removed,
replaced by `&'.
(PSEUDO_END): Provide definition to use .size directive.
(PSEUDO): Don't interpret negative return values less than -128 as
syscall error.
* sysdeps/unix/sysv/linux/m68k/syscall.S (syscall): Likewise.
* sysdeps/m68k/bsd-_setjmp.S: Use PSEUDO_END macro to provide
.size directive.
* sysdeps/m68k/bsd-setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/clone.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/sigreturn.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/socket.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/syscall.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/sysdep.S: Use PSEUDO_END instead of
explicit .size directive.
* libio/iogets.c: Warn when gets is used.
cd * time/strptime.c: Recognize %s, %u, %g, and %G format.
Thu Aug 8 01:41:43 1996 Ulrich Drepper <drepper@cygnus.com>
* elf/Makefile: Undo change of Tue Aug 6 14:27:11 1996.
* elf/dl-support: Add definition of `_dl_sysdep_read_whole_file'.
Thu Aug 8 01:15:59 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/i386/fpu_control.h (_FPU_DEFAULT, _FPU_IEEE): Set
to 0x137f to allow long double operations.
Sun Aug 4 13:12:05 1996 Richard Henderson <rth@tamu.edu>
Bug Fixes:
* nss/nsswitch.c (_res): Remove redundant variable definition.
The real one is in resolve/res_init.c, and having both prevents
using -fno-common when building the shared library.
* sunrpc/rpc_prot.c (_null_auth): Same. Original is in rpc_common.c.
* sysdeps/unix/sysv/linux/alpha/brk.S: When PIC, define __curbrk as
a .bss object not a COMMON symbol.
* sysdeps/alpha/bsd-_setjmp.S, sysdeps/alpha/bsd-setjmp.S: Must load
$gp before referencing __sigsetjmp symbol. Retain LITUSE for same.
Optimizations:
* sysdeps/alpha/strlen.S: Rearrange first-word setup and thense the
main loop for better dual-issue on EV5. Rearrange binary search to
pipeline better and trim one instruction.
Cosmetic Changes:
* time/localtime.c (localtime_r): Move lock declaration back next to
the comment where it was before the 960724 change.
* INSTALL, manual/maint.texi: alpha-gnu-linux -> alpha-ANYTHING-linux.
The second word is supposed to be the hardware manufacturer.
* sysdeps/alpha/_mcount.S: Retain LITUSE for __mcount.
* sysdeps/alpha/setjmp.S: Retain LITUSE for __sigsetjmp_aux.
* sysdeps/alpha/divrem.h: More local labels, retain LITUSE for _mcount.
* sysdeps/alpha/alphaev5/add_n.S, sysdeps/alpha/alphaev5/lshift.S,
sysdeps/alpha/alphaev5/rshift.S, sysdeps/alpha/alphaev5/sub_n.S:
Same cleanups as with EV4 GMP stuff.
Tue Jul 25 03:30:56 1996 Richard Henderson <rth@tamu.edu>
* sysdeps/unix/sysv/linux/Makefile [misc] (sysdep_routines): Add clone.
* sysdeps/unix/sysv/linux/alpha/clone.S: New file.
* sysdeps/unix/sysv/linux/i386/clone.S: New file.
Sun Aug 4 00:12:41 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/gnu/types.h: Declare __fd_mask as
`unsigned long'.
* misc/sys/select.h: Declare fd_mask as alias of __fd_mask.
Sat Aug 3 16:20:02 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/ioperm.c (platform): Add entry for
Mikasa.
* socket/sys/socket.h (send, __send, sendto): Declare buffer
pointer as __const.
* string/tester.c (main): Test stpncpy.
* sysdeps/generic/stpncpy.c (__stpncpy): Fix so it works without
segfault when called with an N that is not a multiple of four and
src[N-1]=='\0'.
* misc/syslog.c (LogType): New variable.
(openlog): If connect() with SOCK_DGRAM fails with EPROTOTYPE,
try again with SOCK_STREAM (the Linux syslogd uses a socket of the
latter type).
(vsyslog): When LogType==SOCK_STREAM, also send ASCII NUL
terminator as a record-delimiter. If __send(LogFile) fails,
call closelog() so logfile gets re-opened next time.
Wed Aug 7 15:15:14 1996 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-open (_dl_open): Add cast to avoid warning.
* manual/memory.texi: Improve some examples to give readers better
advice: Use `stpcpy' instead of `strcat' if possible.
* manual/string.texi: Document `strtok_r' and `strtok'.
* sunrpc/Makefile: Move `+gccwarn' definition before inclusion
of Makeconfig.
[$(cross-compiling)=no]: Change test before making librpcsvc
to this from $(cross-compile).
Reported by Andreas Schwab.
Tue Aug 6 14:27:11 1996 Ulrich Drepper <drepper@cygnus.com>
* elf/Makefile (routines): Move dl-sysdep to here...
(rtld-routines): ...from here. This should make static linking
work again.
* locale/setlocale.c: Add local variable `lock' and add code to
`setlocale' to avoid simultaneous changing of global data.
* catgets/catgets.c (catopen): Use `__strdup' instead of `strdup'.
* catgets/open_catalog (__open_catalog): Use `__stpcpy', `__open',
`__fstat', `__read', `__mmap', `__munmap' and `__close' instead
of unprotected names.
* sysdeps/mach/libc-lock.h: New file.
* sysdeps/unix/readdir.c: Do locking.
* sysdeps/unix/seekdir.c: Likewise.
* sysdeps/unix/rewinddir.c: Likewise.
* sysdeps/unix/closedir.c: Likewise.
* sysdeps/unix/bsd/telldir.c: Likewise.
* sysdeps/mach/hurd/seekdir.c: Likewise.
* sysdeps/mach/hurd/readdir.c: Likewise.
* sysdeps/mach/hurd/closedir.c: Likewise.
* sysdeps/mach/hurd/opendir.c: Initialize the lock.
* sysdeps/unix/opendir.c: Likewise.
* sysdeps/mach/hurd/dirstream.h: Include <libc-lock.h>.
(struct __dirstream): Add lock member using __libc_lock_define.
* sysdeps/unix/dirstream.h: Likewise.
* sysdeps/stub/libc-lock.h (__libc_lock_fini): New macro.
* stdlib/mbstowcs.c: Pass address of pointer to mbsrtowcs.
* stdlib/wcstombs.c: Use wcsrtombs instead of mbsrtowcs.
Thu Jul 4 01:34:04 1996 Ulrich Drepper <drepper@cygnus.com>
* locale/programs/stringtrans.c: Fix typo in copyright.
* stdio-common/printf-prs.c: Add casts to prevent
signed<->unsigned warnings.
* stdio-common/printf-parse.h: Initialize state variable before
calling mbrlen.
* stdio-common/printf-prs.c: Don't initialize state variable here.
* stdio-common/vfprintf.c: Don't initialize state variable.
(vfprintf): While determining length of multibyte string don't
try to be clever in determining characters to use for first
call.
Add real implementation of multibyte<->wide char conversion
functions. The functions always convert between the fixed wide
char format (ISO 10646 in UCS4) and the UTF8 representation of
this character set. Conversion between the currently used
8bit character set and ISO 10646 will not take place. This is
what iconv() is for.
* wcsmbs/wchar.h (mbstate_t): Define as structure to replace
dummy definition.
Add optimized version of `mbrlen' function.
* wcsmbs/btowc.c (btowc): Restrict range of legal characters
to 0...0x7f.
* wcsmbs/wctob.c (wctob): Restrict range of legal characters
to 0..0x7f.
* wcsmbs/mbrlen.c: Make mbrlen a weak alias of __mbrlen.
This is needed in the wchar.h header.
* wcsmbs/mbrtowc.c: Replace dummy implementation. Convert UTF8
encoded character to UCS4.
* wcsmbs/mbsinit.c: Replace dummy implementation. Test COUNT
element of `mbstate_t' for initial state.
* wcsmbs/mbsrtowcs.c: Replace dummy implementation. Convert UTF8
encoded string to UCS4 string.
* wcsmbs/wcrtomb.c: Replace dummy implementation. Convert UCS4
character to UTF8 encoded form.
* wcsmbs/wcsrtombs.c: Replace dummy implementation. Convert UCS4
encoded string to UTF8 encoded form.
* sysdeps/unix/dirstream.h: Rewritten.
* sysdeps/unix/readdir.c: Rewritten.
* sysdeps/unix/telldir.c: Rewritten.
* sysdeps/unix/closedir.c: Use <...> instead of "..." for dirstream.h.
Remove __ from DIR struct member names.
* sysdeps/unix/dirfd.c: Likewise.
* sysdeps/unix/seekdir.c: Likewise.
* sysdeps/unix/rewinddir.c: Likewise.
* sysdeps/unix/opendir.c: Likewise. Don't allocate extra space after
DIR structure.
* sysdeps/stub/direct.h: File removed.
* sysdeps/unix/bsd/bsd4.4/direct.h: File removed.
* sysdeps/unix/bsd/direct.h: File removed.
* sysdeps/unix/common/direct.h: File removed.
* sysdeps/unix/sysv/irix4/direct.h: File removed.
* sysdeps/unix/sysv/isc3/direct.h: File removed.
* sysdeps/unix/sysv/sco3.2.4/direct.h: File removed.
* sysdeps/unix/sysv/sysv4/solaris2/direct.h: File removed.
* sysdeps/unix/common/direntry.h: New file.
* sysdeps/unix/bsd/direntry.h: New file.
* sysdeps/unix/bsd/bsd4.4/direntry.h: New file.
* sysdeps/unix/sysv/direntry.h: New file.
* sysdeps/stub/direntry.h: New file.
* dirent/dirent.h (struct dirent): Type removed. Include <direntry.h>
to define it.
(_D_EXACT_NAMLEN, _D_ALLOC_NAMLEN): New macros.
* dirent/Makefile (headers): Add direntry.h.
(distribute): Remove direct.h.
* sysdeps/posix/getcwd.c: Use new macros instead of d_namlen.
* dirent/scandir.c: Likewise.
* io/fts.c (fts_build): Likewise.
* io/ftw.c (ftw_dir): Likewise.
* sysdeps/posix/ttyname.c: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/syscalls.list: New file.
* sysdeps/mach/hurd/profil.c (MAX_PC_SAMPLES): New macro.
(collector_timeout): New static variable.
(update_waiter): Actually call __task_enable_pc_sampling.
Set collector_timeout based on the `tick' count returned.
(profile_waiter): Use MAX_PC_SAMPLES. Set nsamples before RPC.
Use collector_timeout in __mach_msg call.
* gmon/Makefile (noprof): New variable containing mcount.
Append profil unless it is in $(unix-syscalls).
(mcount.po): Use $(noprof) for list of targets in this rule.
* libc-symbols.h: Define _LIBC before #include <config.h>.
Sun Feb 25 12:29:23 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* config.h.in [_LIBC] (HAVE_STRERROR): Define it.
Protect 2nd page of #undef's for generator programs with #ifndef _LIBC.
* time/zic.c, time/zdump.c, time/private.h: Updated from ADO's latest.
Fri Feb 9 12:40:19 1996 Brendan Kehoe <brendan@lisa.cygnus.com>
* libio/cleanup.c (_IO_cleanup_registration_needed)
[!_G_HAVE_ATEXIT]: Init to NULL.
* libio/filedoalloc.c (_IO_cleanup_registration_needed): Remove decl.
Thu Feb 8 08:12:50 1996 Brendan Kehoe <brendan@cygnus.com>
* libio/filedoalloc.c (_IO_cleanup_registration_needed): Revert
previous change, since cleanup.c only defines it if _G_HAVE_ATEXIT.
Wed Feb 7 15:10:17 1996 Brendan Kehoe <brendan@lisa.cygnus.com>
* libio/filedoalloc.c (_IO_cleanup_registration_needed): Declare as
extern.
Sat Feb 24 11:34:13 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* sysdeps/i386/memcmp.S: Fix argument %esp offsets.
* time/sys/time.h (timeradd, timersub): New macros; BSD has these.
* sysdeps/posix/utimes.c (__utimes): There are 1000000 usecs in a
sec.
Sun Feb 18 13:56:00 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/Makefile, time/Makefile: Make `all' the default target.
Mon Feb 19 18:09:04 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* misc/sys/ptrace.h: Moved to ...
* sysdeps/generic/sys/ptrace.h: ... here.
* sys/ptrace.h: File removed.
Sun Feb 18 12:13:07 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/Makefile (headers): Add fpu_control.h.
* sysdeps/unix/sysv/linux/i386/sysdep.S (errno): Put it into .bss
so that the symbol alias works.
* sysdeps/unix/sysv/linux/m68k/fpu_control.h (_FPU_SETCW): Corrected.
* sysdeps/unix/sysv/linux/resourcebits.h: New file.
* sysdeps/unix/sysv/linux/sys/ptrace.h: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Add getegid, geteuid,
getppid and reboot.
* sysdeps/unix/sysv/linux/sysconf.c: Special version that does not
use getdtablesize.
Sat Feb 17 10:30:21 1996 David Mosberger-Tang <davidm@AZStarNet.com>
* stdio-common/printf_fp.c, stdlib/strtod.c, sysdeps/ieee754/dbl2mpn.c,
sysdeps/ieee754/ldbl2mpn.c, sysdeps/ieee754/mpn2dbl.c,
sysdeps/ieee754/mpn2ldbl.c: Cast left operands of shift instructions
to `long' where necessary.
Thu Feb 15 20:04:50 1996 Ulrich Drepper <drepper@gnu.ai.mit.edu>
* stdlib/fpioconst.h: Introduce new constant _FPIO_CONST_OFFSET.
* stdio-common/printf_fp.c, stdlib/strtod.c: Use _FPIO_CONST_OFFSET
to correctly access MPN array depending on architecture.
Mon Feb 19 15:30:26 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* stdio-common/tstscanf.c (main): Add check for "0" as %d.
* sysdeps/stub/msync.c: Undo change of Jan 29; just two args.
Only some systems have three args; let them define their own stub.
* sysdeps/generic/dl-sysdep.c: Declare _dl_secure.
* sysdeps/generic/machine-gmon.h: New file.
* gmon/Makefile (distribute): Add machine-gmon.h.
* gmon/mcount.c: Undo changes of Feb 13.
Include "machine-gmon.h".
Sun Feb 18 13:24:06 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/direct.h: File removed, since it is
identical to unix/common/direct.h.
* sysdeps/unix/Makefile [no_deps]: Don't include s-proto.d.
* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Don't add ipc.
* stdio-common/Makefile (tests): Remove scanf6.
* sysdeps/unix/sysv/linux/Makefile (non-lib.a): Append libieee.a.
* time/mktime.c (mktime): Move static variable localtime_offset to
file scope.
* stdio-common/vfscanf.c: Put '0' in buffer before scanning for %i
base indicator.
Thu Feb 15 16:56:17 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/dl-machine.h (elf_machine_load_address): Corrected.
(ELF_MACHINE_BEFORE_RTLD_RELOC): Define.
(_dl_runtime_resolve): Save %a1 as well.
(ELF_MACHINE_RUNTIME_FIXUP_ARGS): Add second dummy arg.
(elf_machine_relplt): Define.
* elf/dl-runtime.c: Include possible extra args in declaration of
fixup.
Ulrich Drepper