Annotation of dietlibc/CHANGES, revision 1.411

1.381     fefe        1: 0.23:
                      2:   update sys/soundcard.h
                      3:   various x86_64 fixes (Gwenole Beauchesne)
1.382     fefe        4:   fix assert for 64-bit platforms (Gwenole Beauchesne)
1.383     fefe        5:   remove many warning from test suite (Gwenole Beauchesne)
1.384     fefe        6:   hopefully fix resolver (again, Gwenole)
1.385     fefe        7:   fix floorl typo (Norbert Wolff)
1.386     fefe        8:   add more BSD brokenness to time.h
                      9:   forward poll.h to sys/poll.h
1.387     fefe       10:   make DNS socket close-on-exec (Felix J. Ogris)
1.388     fefe       11:   add cuserid to libcompat (Andreas Krennmair)
1.389     fefe       12:   add ctermid and ftok to libcompat (those are _really_ ugly)
1.390     fefe       13:   copy some RPC bugfix cruft from glibc
                     14:     warning: I don't use rpc or xdr, I don't actually understand or have
                     15:     a way to test this.  Maybe I should remove this cruft from the
                     16:     diet libc...?
1.391     leitner    17:   make declaration of writev and readv match susv3
1.392     leitner    18:   add finite (Andreas Krennmair)
1.393     leitner    19:   move flock+constants to unistd.h (the Linux man page is wrong on this)
1.394     leitner    20:   fix assert (Andreas Krennmair)
1.395     leitner    21:   add modf, libm fixes (Andreas Krennmair)
1.396     leitner    22:   rename __pure__ to __pure (Laurent Bercot)
1.397     leitner    23:   utmp x86_64 biarch support (Gwenole Beauchesne)
1.398     leitner    24:   add fgetpwent (Alvaro Gomes Sobral Barcellos)
1.399     leitner    25:   add vsyscall support for linux 2.5 on recent CPUs
1.400     leitner    26:   add a few new 2.5 syscalls, adapt to renamed epoll syscalls
1.401     sanjiyan   27:   Olaf: fixing the vsyscall support so that the binaries still work on 2.4
1.402     leitner    28:   remove getline macro, caused problems with GNU sed
1.403     leitner    29:   make assert equal (void)0 under -DNDEBUG (Enrico Scholz)
1.404     leitner    30:   make __attribute_malloc__ #define safe (Matthias Andree)
1.405     leitner    31:   add BSD utimes to libcompat (Andreas Krennmair)
1.406     leitner    32:   remove gcc 3 #ifdef kludgery from include/string.h; it works with gcc
                     33:     3.2.2+, don't know if it's gcc or us (Gerrit Pape)
1.407     leitner    34:   remove _null_auth declaration in librpc/rpc_prot.c (Thayne Harbaugh)
                     35:   fix regex bug with ^$ not matching "" (Anthony de Boer)
1.408     sanjiyan   36:   Olaf: removing "<arch>/mmap.*" where no arch-specific impementation is
                     37:       needed. (added "syscalls.s/mmap.S")
                     38:     - fixing the vsyscall in the dynamic library... (self made problem)
                     39:     - removing warning in "res_query.c"
                     40:     - changing type of stream-mutex to recursive
                     41:     - sparc/sparc64: shrink of the unified syscall and the special syscalls
                     42:       (fork/pipe) to use the "unified_syscall_error_handler"
1.409     leitner    43:   add sendfile64 backwards compatibility glue
1.410     leitner    44:   add __attribute_dontuse__ to declare a few functions as deprecated
                     45:   use above to flag a few BSDisms ;-)
1.411   ! leitner    46:   include <sys/cdefs.h> in errno.h, fixes __attribute_dontuse__ breakage
1.381     fefe       47: 
1.341     fefe       48: 0.22:
1.342     fefe       49:   fix i386 libm
1.343     fefe       50:   fix netinet/ip_icmp.h (Rui Prior)
1.344     fefe       51:   make strings.h susv3 compliant (Gunnar Ritter)
1.345     fefe       52:   remove stdio dependence in abort
1.346     fefe       53:   fix truncate64, ftruncate64 (Luc Van Oostenryck and Yuri Kozlov)
1.347     fefe       54:   fix and improve erand48() (Luc Van Oostenryck)
1.348     fefe       55:   fix realpath for non-existant directories (Gergely Nagy and Gerrit Pape)
1.349     fefe       56:   fix DNS timeout and IPv6 socket reuse
1.350     fefe       57:   strtoul now accepts "-1" as well (Thomas Ogrisegg)
                     58:   add i386 strcasecmp and __ltostr (Thomas Ogrisegg)
1.351     fefe       59:   add killpg prototype (Luc Van Oostenryck)
                     60:   remove some compiler warnings (Luc Van Oostenryck)
                     61:   better rand() from Knuth's TAOCP (Luc Van Oostenryck)
1.352     fefe       62:   fix unified x86_64 unified syscall 64-bit return value issue (Gwenole)
1.353     fefe       63:   the getdents64 emulation was broken and repairing it opened a can of
                     64:     worms.  So I ripped it out.  I also changed the readdir64 emulation
                     65:     to work if there is no getdents64.
1.354     fefe       66:   fix ia64 start.S (Thanks to Volker Birk for an account on his ia64 box)
1.355     fefe       67:   many ia64 fixes (waitpid, nice, fork, vfork, time, utime ...)
1.356     fefe       68:   More fixes from Gwenole (printf %p only printed the last 32 bits, I
                     69:     botched the getdents64 #ifdefs, we violated the x86_64 ABI)
1.357     fefe       70:   change signal() to do as glibc does
1.358     fefe       71:   remove a few more warnings
1.359     fefe       72:   add new 2.5 syscall #defines
                     73:   add epoll_create, epoll_ctl and epoll_wait
1.360     fefe       74:   the new x86 syscall numbers exceed 255, breaking our %al optimization
                     75:     I worked around it with conditional assembly in cpp macros.  Ugh.
1.361     fefe       76:   more MIPS fixes (the stoned MIPS ABI for restartable syscalls expects
                     77:     the instruction before the syscall to be a load immediate)
                     78:   fix fread() from a pipe (oops, tried to lseek)
1.362     fefe       79:   #define _POSIX_VDISABLE in termios.h (Laurent Bercot)
1.363     fefe       80:   two *printf fixes (Gernot Tenchio)
1.364     fefe       81:   add nan and +-inf handling in __dtostr
1.365     fefe       82:   add _SC_NGROUPS_MAX support to sysconf (Felix J. Ogris)
1.366     fefe       83:   make assert() use expect(), slight optimization
1.367     fefe       84:   add i386 vfork (Thomas Ogrisegg)
1.368     fefe       85:   fix SA_NODEFER on sparc (Gerrit Pape, Thomas Bader)
1.369     fefe       86:   fix sin, cos and __dtostr (Gernot Tenchio)
1.370     fefe       87:   add /dev/epoll ioctl constants to sys/ioctl.h
1.371     fefe       88:   add linux/eventpoll.h for /dev/epoll
1.372     fefe       89:   fix lseek64 on 64-bit architectures
1.373     olaf       90:   Olaf: fix x86_64 start-code (we have reg-args)
                     91:     fixing some broken macros in sparc32-code (.udiv,.urem)
                     92:     adding strndup (GNU Extension)
1.374     fefe       93:   fix glob strncpy (R.L. Horn)
1.375     fefe       94:   fix regfree (Uwe Ohse)
1.376     fefe       95:   fix puts in full stdio mode (would omit \n)
1.377     fefe       96:   fix wrong types on powerpc, broke *stat (Gerrit Pape)
1.378     fefe       97:   allow more than 64k in i386 memchr (Karsten Scheibler)
1.379     fefe       98:   make strftime work it WANT_TZFILE_PARSER is not set (Gwenole Beauchesne)
1.380     fefe       99:   build parisc on parisc64, change libgcc link order on sparc (Gerrit Pape)
1.341     fefe      100: 
1.326     fefe      101: 0.21:
1.327     fefe      102:   use gcc's size_t, ptrdiff_t and wchar_t types (Olaf)
                    103:   use -G 8 on MIPS to reduce code size (Johannes Stezenbach)
1.328     fefe      104:   add munlock (Jens Låås)
1.330     fefe      105:   argh, atexit fell victim to bit rot (or maybe Olaf)
1.331     fefe      106:   add WANT_INET_ADDR_DNS to make gethostbyname not look up IP numbers
                    107:     but use them to fill in the struct hostent directly.
1.332     olaf      108:   signal is now a correct signal (Olaf)
1.333     fefe      109:   read optimizer cflags for diet -Os gcc from ~/.diet/gcc, overriding
                    110:     the built-in defaults.
1.334     fefe      111:   add file "SECURITY".  I will document design tradeoffs that have
                    112:     security implications there.
1.335     fefe      113:   fixed regex LINEEND condition
1.336     fefe      114:   add .size directive to i386 syscalls
1.337     fefe      115:   shove a few more bytes off the i386 socket calls
1.339     fefe      116:   setjmp, longjmp and clone for x86_64 are now implemented but not tested (Olaf)
1.340     fefe      117:   fix sparc signals
1.326     fefe      118: 
1.319     fefe      119: 0.20:
1.325     fefe      120:   calloc was botched
1.320     fefe      121:   umount and stime for x86_64 (Gwenole Beauchesne)
1.321     fefe      122:   some malloc fixes for very big numbers (Enrico Scholz, me)
1.322     fefe      123:   x86_64 unified syscall did not preserve rbx violating ABI (Gwenole)
1.323     fefe      124:   realpath fix if path did not contain a slash (Gwenole)
1.324     fefe      125:   add ucontext
1.329     fefe      126:   add asm/statfs.h to work around people using <linux/fs.h>
1.319     fefe      127: 
1.308     fefe      128: 0.19:
                    129:   current gcc cvs makes __thread a keyword (Eric Troan)
1.316     fefe      130:   be more strict regarding hostile DNS packets (me)
1.312     fefe      131:   fix ia64 compile problems (Gerrit Pape)
1.311     fefe      132:   make killpg a function and not a macro (broke bash 2.05b)
1.313     fefe      133:   fix ia64 start code and unified syscall (me)
1.314     fefe      134:   add sparc/strlen.S from Thomas Ogrisegg
                    135:   add more space to ARM __jmp_buf in setjmp.h (Andre)
1.315     fefe      136:   fix libcompat/syscall.S (did't compile on arm)
1.316     fefe      137:   add integer overflow fix in xdr_array after bugtraq advisory (me)
1.317     fefe      138:   fix x86_64 socket calls and mmap (and some more) (Gwenole Beauchesne)
                    139:   add calloc integer overflow fix after RUS-CERT advisory (me)
1.318     fefe      140:   add fread and fwrite integer overflow fix (me)
1.308     fefe      141: 
1.281     fefe      142: 0.18:
1.282     fefe      143:   add stpcpy (from Thomas Ogrisegg)
                    144:   check in mktime fix (from Luc Van Oostenryck)
1.283     fefe      145:   add libm2.s from contrib to i386 (oops, how long has it been sitting
                    146:     there?)
1.284     fefe      147:   add truncate64 and ftruncate64 and prototype for truncate (only had ftruncate)
1.285     fefe      148:   Michal Ludvig ported the diet libc to the x86_64 architecture (the
                    149:     upcoming AMD Hammer chips!).  You can't even buy the chips yet and
                    150:     the diet libc already supports it!  Amazing ;-)
                    151:   Michal's patch also fixed several of the outstanding warnings.  Thanks!
1.286     fefe      152:   Andre sent a patch to add ARM profiling.  He says it does not work
                    153:     yet, but it's a start.
1.287     fefe      154:   added getdents64 backwards compatibility and include it in large file
                    155:     support #defines
1.288     fefe      156:   perror now checks if the message is NULL like glibc (Thomas Ogrisegg)
1.289     fefe      157:   ftell did not take ungetc into account (Kevin Ryde through Debian).
1.290     fefe      158:   Thomas Ogrisegg sent a port to IA64!
1.291     fefe      159:   sigaddset, sigdelset and setismember segfaulted for signal 0 (Gunnar Ritter)
1.292     fefe      160:   Enrico Scholz reported several bugs in the header files.
                    161:   change __malloc__ to __attribute_malloc__
1.293     fefe      162:   add pa-risc socketcall (but see TODO) (Felix J. Ogris)
1.294     fefe      163:   fix *rand48 initialization (Kevin Ryde)
                    164:   fnmatch infinite loop fix (Piotr Esden-Tempski)
1.295     fefe      165:   make signal() into a sigaction wrapper function
1.296     fefe      166:   add memrchr (Emil)
1.297     fefe      167:   remove __attribute__((const)) from getpid() (Yuri Kozlov)
1.298     fefe      168:   make getserv* also work if proto is NULL (Jens Låås)
1.299     olaf      169:   now clone on parisc works (Thomas Ogrisegg)
1.300     fefe      170:   getopt* fix from Thomas Walpuski
1.301     fefe      171:   add syscall() to libcompat (Thomas Ogrisegg)
1.302     fefe      172:   fix strncpy and strrchr i386 assembly versions for dynamic linking
1.310     fefe      173:     (John K. Hohm)
1.302     fefe      174:   allow short option grouping in getopt* (Ralf Wildenhues)
1.303     fefe      175:   make the DNS resolver IPv6 transport capable (WANT_IPV6_DNS)
1.304     fefe      176:   mention -v in diet.1 (Bryan Henderson)
1.305     fefe      177:   auto-detect gcc 3 on i386 and remove compiler option warnings
1.306     fefe      178:   putenv tweak (Thomas Ogrisegg)
                    179:   add missing socket syscalls for PA-RISC and IA64 (Thomas Ogrisegg)
                    180:   add cpio.h and tar.h (Thomas Ogrisegg)
                    181:   change opendir/readdir/closedir from malloc to mmap (Thomas Ogrisegg)
1.307     fefe      182:   cleanups from Florian LaRoche
1.281     fefe      183: 
1.264     fefe      184: 0.17:
1.265     fefe      185:   fix several bugs in getservent_r
1.266     fefe      186:   Gunnar Ritter reported the following:
                    187:     moved tcgetpgrp and tcsetpgrp to unistd.h
                    188:     adjusted lstat->lstat64 #define to make it work with function pointers
                    189:     move __dietlibc__ #define from features.h to diet
1.267     fefe      190:   Thomas Ogrisegg sent x86 memccpy and strncpy routines and introduced
                    191:     an dietfeatures.h #define WANT_FULL_POSIX_COMPAT
1.268     fefe      192:   Thomas also sent me profiling support (so far only on x86, but
                    193:     profiling/PORTING describes what needs to be done for other
                    194:     architectures)!
1.272     fefe      195:   add contrib/dprof.c, also from Thomas.
1.269     fefe      196:   Andreas Krennmair sent a patch to add the BSD regex interface to
                    197:     libcompat
1.271     fefe      198:   Andre noticed that __dtostr never sets first to false.  Oops!
1.274     fefe      199:   Andre has provided a largely untested patch that seems to fix the problem.
1.275     fefe      200:   Igor Gilitschenski sent a patch for the "%8.7lx" issue.
1.276     fefe      201:   abort did not flush all stdio streams
1.277     fefe      202:   fix some nasty regular expression bugs
                    203:   write a stupid malloc checker (contrib/debug-realloc.c) to help me
                    204:     debug my regular expressions.  Please read contrib/debug-realloc.txt
1.278     fefe      205:   our i386 memchr,memcmp were broken for the count=0 case
1.279     fefe      206:   fix DNS domain search
1.280     fefe      207:   i386 memccpy exchanged esi and edi :-(  I should do more checks before
                    208:     accepting external code...
1.264     fefe      209: 
1.244     fefe      210: 0.16:
                    211:   "diet -v" or "diet -Os" segfaulted without further arguments.
1.246     fefe      212:   Andre found two very embarassing bugs in my four lines of md5 glue.
                    213:     I need to get more sleep.
1.247     fefe      214:   Thanks Ogrisegg found that ptrace does not work as documented and
                    215:     provided a wrapper that emulates the glibc behaviour.
1.248     fefe      216:   Dirk Engling saved 8 bytes and 4 cycles in the ARM clone()
                    217:   fix ptrace.h for S/390 and ARM
                    218:   provide a PORTING document so we don't lose track of which file need
                    219:     to be touched to port the diet libc to a new platform.
1.249     fefe      220:   remove a few warnings
                    221:   provide a prototype for usleep.
1.250     fefe      222:   make __dtostr work on ARM by using long instead of long long.
                    223:     Idea by Dirk Engling.
1.251     fefe      224:   fix an argument counting bug in *scanf (Thomas Ogrisegg)
1.252     fefe      225:   Forgot an #endif in asm/sigcontext.h (Mike Castle)
1.253     fefe      226:   Kurt Garloff sent in patches to
                    227:     fix struct termios on non-x86 architectures
1.254     fefe      228:   printf("%+05d\n",500) was broken (Raimar Falke told me, Olaf fixed it)
                    229:   create libcompat.a (and move daemon to it)
1.255     fefe      230:   add getdelim and getline
                    231:   *printf now recognize 'z' integer flag (and ignore it)
1.256     olaf      232:   Dirk Engling provided a strcpy.S for ARM.
1.257     olaf      233:   Olaf: fixed *scanf familie. It hadn't wored with "long long".
1.258     fefe      234:   Hans Lermen fixed i386/getenv.S
1.259     fefe      235:   diet -Os no longer discards -fpic and -fno-pic
1.260     fefe      236:   fix i386 rand/random to use correct RAND_MAX (thanks, Jaroslav
                    237:     Macodiseas)
1.261     fefe      238:   sys/ipc.h now includes sys/types.h
1.262     olaf      239:   Olaf: started to make the sparc64 port
1.263     fefe      240:   scandir should not sort if compar() is NULL (reported by Andrea Marrosu)
1.244     fefe      241: 
1.224     fefe      242: 0.15:
1.225     fefe      243:   vfork sucks.  I reverted to the old behavior where vfork==fork.
1.226     fefe      244:   fix bsearch (and remove i386 assembly bsearch, needs to be redone).
1.227     fefe      245:   Thanks Ogrisegg sent a patch to make the PA-RISC unified syscall
                    246:     thread-safe!
1.228     fefe      247:   remove vfork and add alarm to dynamic syscalls.
                    248:   fix diet-dyn to link in dyn_dstop.o and not dyn_stop.o.
1.229     fefe      249:   The MD5 code generated unaligned accesses when passed an unaligned
                    250:     pointer on little endian ARM and MIPS.
                    251:   MIPS unified syscall didn't compile anymore.
                    252:   Put up new mipsel target to cross compile for little endian mips.
                    253:   The mips target will again explicitly set endianness to big endian.
                    254:   Compiling natively on a MIPS box should not touch the endianness.
1.230     fefe      255:   Duh, when we removed return0, we broke tzset when the time zone parser
                    256:     was disabled.  Uwe Ohse noticed this.  Thanks!
                    257:   Fix gethostbyname to match host names case insensitively in /etc/hosts.
                    258:     Oops, this was reported 6 weeks ago but I overlooked the email.
                    259:     Thanks, Denis Rachal!
1.231     fefe      260:   vsnprintf's zero termination was broken.
1.233     fefe      261:   Uwe Ohse found a few more bugs:
                    262:     Remove WANT_BUGGY_GLIBC_STRSEP.  The Linux man page is broken, glibc
                    263:       does it correctly.
                    264:     Make inet_aton use strtoul instead of strtol
                    265:     fdopen would close the file descriptor if it could not malloc the
                    266:       buffer.
                    267:     strftime updates.
                    268:     Make _FILE_OFFSET_BITS includes -Wundef clean
                    269:   Andre found a typo in endian.h for big endian mips
1.234     fefe      270:   Ryan told me that fmod was not included in libm.  Oops.
1.235     fefe      271:   strstr(whatever,"") returned NULL, not whatever.  Found by a new test
                    272:     suite entry for strstr that I wrote.
1.245     fefe      273:   Thomas Ogrisegg suggested or sent patches for the following:
1.236     fefe      274:     add <asm/sigcontext.h> for profiling support.
                    275:     make strncpy a #define in string.h to save a few bytes.
1.241     fefe      276:     an i386 assembler getenv implementation (roughly half the size)
                    277:     add grantpt, ptsname, unlockpt
1.236     fefe      278:   add a getenv test suite entry.
1.238     fefe      279:   Andre contributed an ARM assembler md5 implementation and he fixed mmap
                    280:     on ARM.
                    281:   add glibc macro names in sys/reboot.h.  Mentioned by Laurent G. Bercot
1.239     fefe      282:   getservent_r did not parse lines without aliases.  Thanks, Jaroslav
                    283:     Macodiseas!
1.240     fefe      284:   fix MIPS start code (argv[0] was always corrupt)
1.241     fefe      285:   removed annoying -Wconversion gcc switch
1.242     fefe      286:   add -v to diet.c and fix MIPS CFLAGS in diet.  Thanks, Johannes Stezenbach
1.243     fefe      287:   Kurt Garloff sent these diffs:
                    288:     add fdatasync (and make it a pthread cancellation point)
                    289:     numerous alpha issues, like using .quad instead of .long for
                    290:     offsets, change strip to -strip in Makefile (so a failing strip does
                    291:     not abort the make), try to be more friendly to the gcc 2.96 that
                    292:     SuSE 7.1 AXP ships with.
1.224     fefe      293: 
1.209     fefe      294: 0.14:
1.224     fefe      295:   fix brk again (missing __brk, trivial oversight)
1.210     fefe      296:   a new i386/atol.S that is 4 bytes smaller (and faster, too!).  Thanks,
                    297:     Thomas Ogrisegg!
1.211     fefe      298:   Thomas also contributed a PA-RISC port including testandset, so
                    299:     libpthread will work once we implement clone!  Great work, Thomas.
1.212     fefe      300:   made the fake locale more believable.
                    301:   If you need gettext, use http://www.ca.postgresql.org/~petere/gettext.html
1.213     fefe      302:   moved _exit into the unified syscall on x86.
1.214     fefe      303:   Uwe Ohse found many more bugs:
                    304:     getpass EINTR handling, ttyname, sysconf_cpus with SLASH_PROC_OK,
                    305:     liblatin1 was more or less completely broken if you gave it chars as
                    306:     arguments, not ints (signedness).  execvp had a buffer overflow in
                    307:     case a PATH element exceeded PATH_MAX, but it's not a security
                    308:     problem since setuid programs need to set their path to some known
                    309:     value anyway.
1.219     fefe      310:     hasmntopt did not work with foo=bar style options
1.217     fefe      311:   Uwe also improved ftw's stack usage.
1.214     fefe      312:   Put movl instead of popl rationale in comment in i386/unified.S since
                    313:     three people have suggested saving a few bytes with popl now ;)
1.215     fefe      314:   I discovered __attribute__((malloc)) and started using it.  For gcc 3,
                    315:     it improves the optimizer when functions return malloced pointers.
1.216     fefe      316:   Steven Rostedt pointed out that my setvbuf was broken with regard to
                    317:     size==0 and sent a patch to fix it.
1.218     fefe      318:   Thomas Ogrisegg made setenv smaller.
1.220     olaf      319:   Olaf: implemented the parisc clone and an atomic testandset, modified the
                    320:     libpthread to respect the parisc UPgrowing stack. still non functional,
                    321:     because the unified syscall uses errno :(
1.221     fefe      322:   tcgetospeed read from the wrong termios field.  Thanks, Gunnar Ritter!
1.222     fefe      323:   Fixed asprintf (relied on vsnprintf(NULL,...) to return length but
                    324:     don't write anything which was no longer the case.  It also
                    325:     allocated one byte unnecessarily, which Uwe Ohse found.
1.223     fefe      326:   Fix ttyname (readlink does not \0-terminate, forgot to do that).
1.209     fefe      327: 
1.193     fefe      328: 0.13:
1.194     fefe      329:   add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199     fefe      330:   make diet not include the linker safeguard stuff when preprocessing
1.207     fefe      331:   Olaf: port to S/390!
1.196     leitner   332:   me: fix vfork (it was put into dietlibc.a twice)
1.197     leitner   333:   res_query did not initialize last
1.199     fefe      334:   diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198     leitner   335:   fixed fflush on input streams (tic from ncurses exposed this)
1.199     fefe      336:   duh, there is an alarm system call, too, so we use it and not setitimer
1.200     fefe      337:   fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201     fefe      338:   rewrote __dtostr (it also has one more argument now)
1.205     fefe      339:   Thanks to Erik Troan for bringing these to my attention:
1.204     fefe      340:     make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
                    341:     fix strncat for the case where n == 0 (security implications?)
                    342:     fix bsearch (it didn't find the very last element in the array, same
                    343:       bug in both the C and the i386 assembly version).
1.205     fefe      344:     fixed FNM_PATHNAME in fnmatch
1.204     fefe      345:   fix brk (the syscall was documented incorrectly in the Linux man page)
                    346:     Thanks, Thomas Ogrisegg!
1.205     fefe      347:   added negated character classes to fnmatch (not required by POSIX)
1.206     fefe      348:   make the utmp routines open utmp read-only if read-write doesn't work.
1.208     fefe      349:   remove syscalls.c directory, it is obsolete now with unified syscalls
1.193     fefe      350: 
1.164     fefe      351: 0.12:
                    352:   more contributions from Frank Klemm.
1.165     fefe      353:   iconv can now do UCS-2, too.
1.167     fefe      354:   Imported several x86 assembly routines from Wouter van Kleunen.
1.166     fefe      355:   Lots of bug fixes, and several more i386 specific versions of common
                    356:     routines to make them smaller.
1.168     fefe      357:   add memmem (a GNU extension that looks useful)
1.170     fefe      358:   several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168     fefe      359:     add pivot_root syscall, %n for *scanf.
1.169     fefe      360:   add adjtimex (thanks, Laurent BERCOT)
1.171     fefe      361:   add Frank Klemm's optimized md5
1.172     fefe      362:   add -Os option to diet (see diet.1).
1.173     fefe      363:   several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174     fefe      364:   add 32-bit uid/gid syscalls.
1.175     fefe      365:   add rand48 (thanks, Johannes Kloos)
1.176     fefe      366:   fixed a lot of bugs in getopt* (thanks, Johannes)
1.177     fefe      367:   add strxfrm and tweak limits.h.  glib-1.3.8 now compiles without changes.
                    368:   add a few more module syscalls.  modutils-2.4.9 now compiles without changes.
                    369:   fix gethostent alias list termination.  Major oops.
1.178     fefe      370:   add execle and two DNS constants (from Johannes Kloos).
1.179     fefe      371:   opendir did not close-on-exec (thanks, Laurent Bercot).
1.180     fefe      372:   DNS will now properly signal errors and set h_errno.
                    373:   A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181     fefe      374:   Added an uber-cool linker safeguard feature!  Idea by Matthias Andree.
                    375:     If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
                    376:     external reference to a symbol that is only in the diet libc.  So,
                    377:     when you accidentally link a diet libc compiled object file against
                    378:     glibc, the linker will barf.  This will bloat your object files, but
                    379:     you can remove all the references with "strip -R .note" from
                    380:     the binaries in the end (which you should do anyway).
1.182     fefe      381:   fix ARM unified syscall (select did not work).
1.183     fefe      382:   add getpwent_r ala glibc and replace getpwent
                    383:   do the same for getgrent and getspent
                    384:   remove entlib (new code is smaller)
1.184     fefe      385:   rewrite getserv* to use parselib (and provide ..._r, too)
1.185     fefe      386:   add getpwnam_r and getpwuid_r
1.186     fefe      387:   rewrite getproto* to use parselib (and protive ..._r, too)
1.187     fefe      388:   Olaf muddled with the dynamic linker.  It's a clean-room
                    389:     implementation in the sense that it once worked for Olaf in a clean
                    390:     room ;)
1.188     fefe      391:   add if_nameindex and if_freenameindex.
                    392:   fixed arm unified syscalls to work with current binutils (; is no
                    393:     longer a line separator but starts a comment, switched to .macro)
1.189     fefe      394:   changed all st_[cma]time types to signed long so comparisons against
                    395:     LONG_MIN will work correctly.  (GNU tar does this)
1.190     fefe      396:   fixed two bugs regarding ungetc.
                    397:   add getusershell, setusershell, endusershell (for vs_ftpd)
                    398:   add prctl, dirfd (also for vs_ftpd)
1.191     fefe      399:   fixed strftime (was completely hosed)
1.192     fefe      400:   added real make install target
1.164     fefe      401: 
1.115     fefe      402: 0.11:
                    403:   fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116     fefe      404:   fix vsscanf bug (Thanks, David Chappell).
1.117     fefe      405:   add floor, ceil and memchr prototypes.
                    406:   add __builtin_expect and expect #defines for gcc versions below 3.0
1.118     fefe      407:   cleaner errno vs __errno_location handling
                    408:   add placeholder iconv (iconv_open will always return EINVAL)
                    409:   try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
                    410:     initialization of getaddrinfo.
1.119     fefe      411:   fix vsnprintf %X (printed lower case)
1.120     fefe      412:   I wrote a new getopt.  It appears to actually work (it is POSIX
                    413:     compliant, it does not sort argv like the GNU version) and is only
                    414:     a little over 300 bytes on x86.
1.121     fefe      415:   Guillaume Cottenceau just wrote me that strncat should be even more
                    416:     broken than it already is: it should append n bytes AND THEN \0!
                    417:     I wonder how many programmers have produces off-by-one errors here...
1.122     fefe      418:   Fix regexec offset return.  autoconf now believes that diet libc has
                    419:     POSIX regular expressions.
1.123     fefe      420:   Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124     fefe      421:   Fix regular expression match for x* when there is no x at all.
1.125     fefe      422:   Fix memory leak in error case in gethostbyname(2|).  Thanks, Dietz Pröpper.
1.126     fefe      423:   Add %h to vsnprintf.
1.127     fefe      424:   Add FAQ.
1.128     fefe      425:   Make %h work for signed numbers and add %hh to vsnprintf.
                    426:   initgroups ignored the group argument :-(
                    427:   remove printf references and nested functions from glob.
1.129     fefe      428:   added an errno in libpthread that will display a prominent linker
                    429:     warning.
1.131     fefe      430:   started getting rid of kernel headers.  Big task! :-(
1.130     fefe      431:   add res_mkquery.  The diet libc can now compile and link mtr.
1.132     olaf      432:   Olaf: added a lot of code in libdl (not yet complete), changed the
                    433:     startup code to make it work with his libdl and ld.so (needs still work
                    434:     too)
1.134     fefe      435:   __dns_readstartfiles only took the first domain or search path.
                    436:     Thanks, Anthony de Boer
1.133     olaf      437:   Olaf: added clone and a new unified_syscall for PowerPC
                    438:     also dynlinker is now available (i386 only at this time)
1.135     fefe      439:   crufted together a stdarg.h implementation from the various gcc headers.
1.136     fefe      440:   implement getopt_long (ugh, the GNU people need professional help)
1.137     fefe      441:   fixed word delimiters in regex (they looked for space, i.e. "," did
                    442:     not work as delimiter)
1.138     fefe      443:   errno.h now declares sys_errlist and sys_nerr.
1.143     fefe      444:   added mkdtemp.
1.142     fefe      445:   Uwe Ohse reported all of the following bugs:
                    446:     ttyname should return 0 if !isatty.
                    447:     realpath returns NULL if "." cannot be opened
                    448:     putenv erroneously accepted (and mishandled) entries without "=".
                    449:     popen returned 255 instead of 127 if /bin/sh could not be run.
                    450:     fgetc did not set the internal EOF indicator on EOF.
                    451:     bsearch contained an assumption about integer arithmetic overflow
                    452:       behavior.
                    453:     system did not set SIGCHLD and thus contained a race.
                    454:     popen did not set close-on-exec and could leak an fd on malloc error.
1.147     fefe      455:     daemon did not check whether open returns an fd below 3
                    456:     perror did not save errno.
1.144     olaf      457:   Olaf: Peter Jones reported some problems with perror; strerror had the
                    458:     same problem.
                    459:     Peter also posted a patch to atexit/exit. With some modifications it is
                    460:     now implemented.
1.145     fefe      461:   Unbuffered stdio and ungetc can no longer be disabled.  I will try to
                    462:     implement part of it using ELF weak symbols.
1.146     fefe      463:   Added minimal sysconf (tehe) from David Chappell.
1.148     fefe      464:   Added overflow handling for strtoul and strtol.
1.149     fefe      465:   Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
                    466:     it before falling back to DNS if enabled.
1.150     fefe      467:   Added a littie backwards compatibility cruft for gpm (man, do these
                    468:     sources stink!)
1.151     fefe      469:   Added openpty.
1.152     fefe      470:   Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154     fefe      471:   Fix fseek return value.
1.155     fefe      472:   Add dirname and basename.
1.156     fefe      473:   Add a few i386 math routines contributed by Frank Klemm.
1.157     fefe      474:   Fixed getservent (did not allow _ and - in the aliases).
                    475:     Thanks, Oden Eriksson
1.158     fefe      476:   Added a float.h so configure believes we have ANSI header files.
                    477:   Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162     fefe      478:   Olaf: has added a new scanf and printf core that is suitable for all
1.159     olaf      479:     scanf and printf function implementations
1.160     fefe      480:   Imported a few more functions and optimizations from Frank Klemm (he
                    481:     also rewrote dtostr to have more precision)
1.161     olaf      482:   Olaf: checked in a new sig* function family (based on rt_sig*).
                    483:     legacy <2.2 signal-handling doesn't work at the moment.
1.163     fefe      484:   Made rudimentary iconv that can convert back and forth between
                    485:     iso-8859-1, utf-8 and ucs-4 (for debugging).
                    486:     Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115     fefe      487: 
1.74      fefe      488: 0.10:
                    489:   update getpagesize.
                    490:   add personality.
1.75      fefe      491:   add "%*s" and "%*.*s" support to vsnprintf.
1.76      fefe      492:   add putchar (apparently arm-linux-gcc will substitute printf("\n")
                    493:     with putchar('\n') behind your back...?!
1.77      fefe      494:   import include/scsi/ from glibc.
1.78      fefe      495:   add iopl.
1.80      fefe      496:   add execl and sigdelset prototypes.
                    497:   add getopt_long stuff to getopt.h (may compile but won't link).
1.81      fefe      498:   add RPC headers (no code yet).
1.82      fefe      499:   add mlockall, munlockall
1.83      fefe      500:   make "diet gcc foo.c" work.
                    501:   added Sun RPC code and removed as many warnings as possible in a
                    502:     heroic act of self-mutilation.
                    503:   added getproto* and getdtablesize for the RPC cruft :-(
1.84      fefe      504:   added getpass.  mount from util-linux actually compiles now!
                    505:   fix the sig*set routines.  mount actually works now *bg*
                    506:   fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85      fefe      507:   added an initial regex implementation (3500 bytes!!!).
1.87      fefe      508:   add llseek and lseek64 with optional lseek fall-back.
1.88      fefe      509:   add res_init.
                    510:   add asprintf (ugh, what an ugly function).
1.89      fefe      511:   expanded arpa/nameser.h to include backwards compatibility defines
1.90      fefe      512:   add ut_name alias to ut_host in struct utmp.
                    513:   add inet_ntop, inet_pton, gethostbyname2.
1.92      fefe      514:   add sysinfo, recvmsg, sendmsg.
1.93      fefe      515:   add endmntent, getmntent, setmntent.
1.94      fefe      516:   fix fnmatch (thanks, Guillaume Cottenceau!)
1.96      fefe      517:   add setenv.
                    518:   remove __restrict from mntent.h, add __restrict__ removal alias for
                    519:     older gcc versions in sys/cdefs.h.
                    520:   add rlim_t, sig_atomic_t declarations.
                    521:   add sigsetjmp #define for __sigsetjmp (oops).
                    522:     (Thanks to Chris Siebenmann for these three bug reports)
1.97      fefe      523:   add a gruesome hack to printf floating point to accept %f and kludge
                    524:     together support for %.2f.  Don't look at the code, please!
1.98      fefe      525:   fixed tcsetpgrp (oops, this is embarassing!  Thanks, Chris Siebenmann)
1.99      fefe      526:   imported fix for entlib by Jeff Garzik.
1.100     fefe      527:   add glob implementation from Guillaume Cottenceau (Thanks!!)
                    528:   add libdl fragments from Olaf (Yeah!  One step closer to dynamic linking!)
1.101     fefe      529:   add REG_ICASE and word start/end handling to my regular expressions.
                    530:   my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102     fefe      531:   wrap getcwd to comply to man page (the syscall returns the number of
                    532:     bytes, not the buffer)
                    533:   add realpath.
1.103     fefe      534:   fix vfprintf.
1.104     fefe      535:   fix *scanf %s zero termination.
                    536:   add abs, labs, llabs.
1.105     fefe      537:   add <sys/io.h>, ioperm syscall.
                    538:   add flock to <sys/file.h>
1.106     fefe      539:   fixes to bsearch and the regular expressions.
1.107     fefe      540:   add fake herror.
1.108     fefe      541:   add scandir and alphasort.
1.109     fefe      542:   add killpg
1.110     fefe      543:   implemented a gross hack to make libpthread compile when
                    544:     dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111     fefe      545:   add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112     fefe      546:   fix sigsuspend (syscall had completely fscked up arguments!)
1.113     fefe      547:   RLIM_INFINITY from the kernel is broken.  Thanks to Chris Siebenmann
                    548:     for sending a patch.
1.114     fefe      549:   add getserv*.
                    550:   add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
                    551:     "search" from resolv.conf.
1.74      fefe      552: 
1.73      fefe      553: 0.9:
1.65      fefe      554:   fixed initgroups (oops)
1.66      fefe      555:   Cleanup appending file open for stdio (thanks, James Antill)
                    556:   imported vfprintf fix from James Antill.
1.67      fefe      557:   add fnmatch
                    558:   change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68      fefe      559:   Olaf added character classes to *scanf.
1.69      fefe      560:   Put object and library files into a separate directory (bin-$ARCH).
                    561:   Add "cross" make target to make all architectures.
                    562:   Add "diet" program and man page.
1.70      fefe      563:   Add getgrnam, getgrgid
1.71      fefe      564:   Add cfmakeraw (Thanks, Antonio Musumeci)
1.72      fefe      565:   localtime won't call gettimeofday when the tzfile parser is used.
1.65      fefe      566: 
1.64      fefe      567: 0.8:
1.34      fefe      568:   vsnprintf(0,...) estimated the length of strings with a padding width
                    569:     incorrectly.
1.35      fefe      570:   new reboot() from Olaf.
1.36      fefe      571:   added prototypes for getsockopt and setsockopt.
1.39      fefe      572:   added experimental sem* and shm*
1.38      fefe      573:   define EXIT_SUCCESS and EXIT_FAILURE
1.40      fefe      574:   added setvbuf (only changes mode, not buffer)
1.41      fefe      575:   added dietwarning.h (woohoo, linker warnings!) and used it to warn of
                    576:     insecurity (system, sprintf) or bloat (printf and stdio).
1.42      fefe      577:   added qsort() and bsearch().  Benchmark on 1000 random ints:
                    578:     glibc: 679414 cycles qsort and 3352 cycles bsearch
                    579:     diet libc: 300010 cycles qsort, 553 cycles bsearch
                    580:     I have no idea why glibc is so slow.
1.43      fefe      581:   added __isnan (references by libm.a from glibc).
                    582:   added popen() and pclose().  Now the diet libc can link slsh (from
                    583:     S-Lang!)
1.44      fefe      584:   corrected usleep.  It was more of an msleep until now.
1.45      fefe      585:   corrected __dtostr (it looped when trying to format "0.0").
                    586:   several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46      fefe      587:   added ungetc (does it work?)
1.47      fefe      588:   added inet_aton (yuck!)
1.50      fefe      589:   added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48      fefe      590:   added h_errno and __h_errno_location
                    591:   added inet_ntoa
1.49      fefe      592:   added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51      fefe      593:   add bcopy, index, rindex macros
                    594:   add isgraph and isxdigit
1.52      fefe      595:   add strftime (ugh!!!)
1.53      olaf      596:   Olaf fixed strftime, gmtime_r leap year bug.
1.54      fefe      597:   Jeff Garzik contributed a spec file.  I put it in contrib and hope
                    598:     everbody knows what to do with it...
                    599:   Olaf checked in a ton of libpthread stuff.
1.55      fefe      600:   added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56      fefe      601:   add large file backwards compatibility support (so gzip will run on
                    602:     kernel 2.2 and 2.0)
1.57      fefe      603:   added shutdown
1.58      fefe      604:   added nice
                    605:   added pseudo-locale support for is* (they are now weak aliases,
                    606:     isupper -> __isupper_ascii etc).  So, for example, liblatin1 can
                    607:     overwrite the default is* functions.
1.59      fefe      608:   added liblatin1.a
1.60      fefe      609:   added tzfile implementation (does it work for anyone else?)
1.61      fefe      610:   added syslog(3) (thanks to Rene Müller!)
1.62      fefe      611:   Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
                    612:     Thanks!
1.63      fefe      613:   merged duplicate code in execv and execvp into exec_lib.o
1.34      fefe      614: 
1.21      fefe      615: 0.7.2:
                    616:   added several prototypes to already implemented functions and
                    617:     <sys/reboot.h>.  Thanks for Abraham for pointing this out.
1.22      fefe      618:   added prototypes for process group and dup syscalls.  Thanks to
                    619:     Abraham again.  He also contributed an implementation for daemon(),
                    620:     an ugly BSD hack.  I decided to diversify the lib/ directory a
                    621:     little and now created a libugly/ directory for stuff like system()
                    622:     and daemon() ;-)
                    623:   added libstdio and moved all that stdio crap from lib/ there.  The
                    624:     idea is to start separating now what we will separate for shared
                    625:     libraries anyway.
1.26      fefe      626:   optimized x86 unified-syscall by Olaf.
1.27      fefe      627:   added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
                    628:     limits.h instead)
                    629:   added remove.c and enough cruft to limits.h to make it compile lzo,
                    630:     lzop and bzip2.
1.28      fefe      631:   added mktime, asctime_r, asctime and ctime (needed for gzip).
                    632:   Someone will need to implement a reader for the glibc localtime file
1.31      fefe      633:     format some day (man tzfile, ugh!) :-(
1.29      fefe      634:   added unlink prototype to unistd.h.
                    635:   added gmtime and gmtime_r.
1.31      fefe      636:   fixed sparc unified syscall error handling (please upgrade!).
1.30      fefe      637:   removed readdir glibc compatibility cruft.
1.31      fefe      638:   removed stat glibc compatibility cruft.
1.32      fefe      639:   oops, my fread was broken for pipes.
1.33      fefe      640:   Olaf found a bug in pipe() for sparc, too.
1.21      fefe      641: 
1.9       fefe      642: 0.7.1:
1.11      fefe      643:   optimized away the static arrays from __ltostr and __lltostr.
                    644:   optimized away the static arrays (and more!) from strtoul and strtoull.
                    645:   added system (by Olaf).
1.12      fefe      646:   added tolower and toupper
1.13      fefe      647:   added getopt from Olaf (~600 bytes on x86!)
1.14      fefe      648:   added clone for mips (by Olaf).
                    649:   fixed longjmp and setjmp on sparc not to require glibc include files.
1.15      olaf      650:   added pause for all (by Olaf).
1.17      fefe      651:   added __attribute__ ((__const__)) to ctype.h
1.16      fefe      652:   added isupper and islower.
                    653:   added putc and putchar as macros.
1.17      fefe      654:   added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
                    655:     insightful discussions and patches I partially used for the last three)
1.18      fefe      656:   added getpriority and setpriority (also by Abraham)
1.19      fefe      657:   oops, I broke strtoul in a recent optimization attempt.
1.20      fefe      658:   oi, setjmp and longjmp were broken on other platforms, too!
                    659:     Thanks to Sébastien Côté for reporting this.
1.9       fefe      660: 
                    661: 0.7:
1.6       olaf      662:   clone support for i386,alpha,arm and sparc by Olaf.
1.1       cvs       663:   Initial dynamic loading glue for i386, also by Olaf.
                    664:   We don't have a dynamic loader yet, so this is not yet usable.
                    665:   added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
                    666:     vsprintf, writev, all by Olaf.
1.2       fefe      667:   imported readdir fix from Guillaume.  Mhh, can the kernel interface
                    668:     really be this broken?
1.3       fefe      669:   Found a kludgy way to detect whether the kernel includes define struct
                    670:     stat64 (they also define STAT64_HAS_BROKEN_ST_INO).  If this does
                    671:     not work for you, please tell me!
1.4       fefe      672:   Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7       fefe      673:   Fixed stdio line buffering.  The code was already there but I forgot
                    674:     to mark stdio and stdout as line buffered.  This should really be
                    675:     done dynamically using isatty, though.
1.8       fefe      676:   Removed superfluous "if (1)" in execvp.c
1.1       cvs       677: 
                    678: 0.6.14:
                    679:   *scanf did not append the 0 byte for %s.
                    680:   added creat and changed creat to call open directly instead of open64.
                    681:   did for fread what 0.6.10 did for fwrite.
                    682:   repaired buffered stdio a little (line buffering is still not
                    683:     supported).
                    684:   [All of these bugs have been reported by Guillaume.  Thanks!]
                    685:   added __pure__ to strchr and strrchr in <string.h>
                    686: 
                    687: 0.6.13:
                    688:   included COPYING to make clear that the diet libc is covered by the
                    689:     GNU General Public License (and _not_ the LGPL).  That means that
                    690:     you need to obtain a license from me if you want to use the diet
                    691:     libc in a proprietary program that you want to distribute.
                    692:   The x86 unified syscall swapped arguments #4 and #5 and noone
                    693:     noticed until now!  Thanks to Guillaume Cottenceau for reporting
                    694:     this!
                    695:   The malloc had a subtle bug with small allocations that could cause
                    696:     segfault.  Guillaume reported it, Olaf fixed it.
                    697: 
                    698: 0.6.12:
                    699:   added assert, statfs and fstatfs
                    700:   added include/net/if.h so fget compiles again.
                    701: 
                    702: 0.6.11:
                    703:   added putenv.
                    704: 
                    705: 0.6.10:
                    706:   fixed fwrite.  It returned the number of bytes written, not the number
                    707:     of records.  Thanks to Albert D. Cahalan for pointing this out.
                    708:   fixed fgets.  It returned EOF on empty lines.  Thanks, Erik Frey.
                    709:   added brk and sbrk.  harold@nb.com.sg made me do it.
                    710: 
                    711: 0.6.9:
                    712:   fixed execvp not to return on ENOENT
                    713:   did for {open|read|close|seek|tell}dir what I did for stat before.
                    714:     The glibc compatibility part is currently non-functional.
                    715:   fixed white space handling in sscanf " (" would not match " (".
                    716:   fixed printf to accept 'l' flag.
                    717:   fixed getpwuid (ignored last line)
                    718: 
                    719: 0.6.8:
                    720:   Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
                    721:     mips and arm.  I did the one for ppc.  They can be enabled in dietfeatures.h.
                    722:   added strlcpy and strlcat from OpenBSD.
                    723:   added stat64, fstat64 and lstat64.
                    724:   added endian.h and made ending of strlen.c endianness-aware
                    725:   added string routines size tweak to dietfeatures.h.  Most of the
                    726:     string routines have been unrolled.  This is up to three times as
                    727:     fast but creates up to three times larger code.  Now you can disable
                    728:     the unrolling.
                    729:   added sendfile.
                    730:   I also added pread.  It works on x86 and sparc but not on ppc and mips.
                    731:     I have no idea what's going on.  strace disagrees with the kernel.
                    732:     Can anyone help?  I asked the Linux kernel mailing list for help, too.
                    733:   added a few aliases of the type __libc_open for open.  nm on
                    734:     libpthreads.so indicates that we will need them.
                    735: 
                    736: 0.6.7:
                    737:   the sources now compile without warnings with -Wall.
                    738:   printf now prints "(null)" when %s is passed NULL.  This can be
                    739:     removed with WANT_NULL_PRINTF in dietfeatures.h
                    740:   added vfprintf, execl, ttyname.
                    741:   stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
                    742:     __dietfstat so they can use the normal kernel struct stat.
                    743:     stat, lstat and fstat are now C wrappers that convert to the glibc
                    744:     struct stat.  So we can avoid that overhead for programs that use
                    745:     dietlibc headers.
                    746: 
                    747: 0.6.6:
                    748:   changed the Makefiles so you can now set CFLAGS on the command line
                    749:   added memccmp (analogous to memccpy) and strncmp.
                    750:   Olaf fixed another bug in the sparc unified syscall.
                    751:   Paul Clifford contributed a C version of his strlen.S that is much
                    752:     more efficient than the previous strlen on all platforms!  It also
                    753:     looks like technology from Roswell. ;-}
                    754:   added a "real" stdio.  Well, almost.  Please contribute!
                    755:   added dietfeatures.h so you can remove features you don't need.
                    756:   removed debug code from vsnprintf that changed \0 to ' ' (argh!).
                    757:   stdio now works with simple programs and minigzip from libz.
                    758:   stdio uses some major trickery to avoid linking the stdio, stderr and
                    759:     stdout (and reserving space for them) when they are not used.
                    760: 
                    761: 0.6.5:
                    762:   Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
                    763:     most of them bugs in the new header files, but also missing sigset
                    764:     functions.
                    765:   Paul Clifford contributed an assembly strlen.S for ARM and fixed
                    766:     several bugs.
                    767:   Fixed ppc/setjmp and mips/pipe.
                    768:   Olaf contributed a new sparc unified syscall.
                    769: 
                    770: 0.6.4:
                    771:   declared is* static inline in getservent.
                    772:   added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
                    773:   changed strlen to return 0 when passed NULL.
                    774:   new, much smaller unified syscall for MIPS.  Thanks to Olaf the Mad
                    775:     Scientist who actually implemented this without access to a MIPS
                    776:     box, just from reading the architecture manual.  And it worked out
                    777:     of the box.
                    778:   started a set of system includes, mainly so that I can use lcc and
                    779:     my alpha-linux cross compiler (which is unable to cross-compile
                    780:     glibc).  diet libc can now be compiled without any include files
                    781:     from a normal libc.  The includes do declare more than diet libc
                    782:     currently delivers and they are still far from complete for real
                    783:     applications.
                    784:   I will only add assembly versions that are smaller _and_ faster than
                    785:     the C version.  Larger routines are only accepted if they are called
                    786:     very often and are substantially faster.
                    787:   added i386 assembly strchr, which is smaller and faster than the old
                    788:     version.  It is, however, larger than the version contributed by
                    789:     proton (thanks, anyway).
                    790:   added i386 strlen (31% faster, 14% smaller)
                    791:   "make t" will now create a map file called "mapfile".
                    792: 
                    793: 0.6.3:
                    794:   added sys_errlist, strerror and perror
                    795:   added isblank
                    796:   added atol
                    797: 
                    798: 0.6.2:
                    799:   mmap for ARM didn't compile.  Thanks, Paul!
                    800: 
                    801: 0.6.1:
                    802:   split mmap into the architecture specific subdirectories.
                    803:   getenv now copes with environ==NULL, thanks Paul Clifford.
                    804:   Paul also contributed a smaller ARM startup code.
                    805: 
                    806: 0.6:
                    807:   strcat returned the wrong result.  Thanks, Dietz Pröpper.
                    808:   strtod now understands a negative exponent (oops, thanks Bertram Barth)
                    809:   Port to arm-linux-gnu, but on the Netwinder I use for testing the
                    810:     __dtostr does not work (I have no idea why!)
                    811:   The MIPS port now uses (much smaller) non-PIC code.  That means that
                    812:     the applications you link against diet libc also have to be compiled
                    813:     non-PIC.  I suggest copying the CFLAGS from the diet libc Makefile.
                    814:     Thanks to Ralf Bächle for helping me with this!
                    815:   I made subdirectories for the architectures and use VPATH to override
                    816:     VPATH so that make finds the source file automatically.  That should
                    817:     simplify the sources greatly.
                    818:   Olaf Dreesen contributed Alpha support including setjmp and longjmp!
                    819:   ARM and MIPS now also have setjmp and longjmp
                    820:   "compile" and "load" are now make targets.  Use them for djb programs.
                    821:   added contrib/elftrunc.c which will remove unnecessary ELF headers.
                    822:     Again, contributed from Olaf.  Great work!
                    823: 
                    824: 0.5.12:
                    825:   printf also does signed numbers.
                    826:   If you don't use atexit, dietlibc now does not link exit, only _exit.
                    827:   *printf now correctly returns the number of bytes written.
                    828:   Olaf contributed experimental sscanf and vsscanf implementations.
                    829:   If passed NULL as buffer, snprintf will not write anything but still
                    830:     return the number of bytes it would have written.
                    831:   Initial MIPS port!   (Oh, the agony!)
                    832:     No setjmp and longjmp support yet!  Please contribute!
                    833:   I even implemented unified syscalls for MIPS.  Still, MIPS code is
                    834:     almost twice the size of SPARC code.  If anyone knows why: please
                    835:     tell me!
                    836: 
                    837: 0.5.11:
                    838:   I implemented new unified syscalls for x86, sparc and ppc, this time based
                    839:     on .s files and not .c files, and I moved the syscalls into
                    840:     subdirectores to clean the dietlibc sources up a little.
                    841:   A binary consisting of printf("%s is %d\n","olaf",23) is now
                    842:     2864 bytes on sparc
                    843:     2488 bytes on intel
                    844:   I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
                    845:     to make a few more applications work.
                    846:   Olaf Dreesen also implemented some unified syscall stuff for x86.
                    847:   He discovered that with our unified syscall interface it actually
                    848:     costs <10 bytes total to make all system calls thread safe!
                    849:   I implemented atexit() (can register up to 4 callbacks).
                    850:   I implemented strtod and __dtostr (the opposite).  Now we can add
                    851:     floating point support to vsnprintf and sscanf!
                    852: 
                    853: 0.5.10:
                    854:   I actually saw that I can not only merge the errno handling code of
                    855:     the system calls on x86, I can also merge the rest (including the
                    856:     arguments) except for setting the system call number.  All those
                    857:     system calls are now just a jump to a unified system call handler.
                    858:     I got rid of x86openclose again.  The savings are substantial:
                    859:     chown from embutils went from 7664 to 7184 bytes!
                    860:     If I'd move the system call wrappers to assembly language, I could
                    861:     even reduce the alignment (does not matter since it's just a jump
                    862:     anyway) and get rid of the "ret" behind each jump (one byte per
                    863:     system call!)
                    864: 
                    865: 0.5.9:
                    866:   added memchr, strpbrk, strstr, strtol, isspace (hehe)
                    867:   fixed strdup
                    868:   fixed return values for strcpy and strcat (thanks to Norbert Berzen)
                    869:   Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
                    870:     (no signed integers, only strings and unsigned integers (but
                    871:     supporting octal, hex and decimal).  Thanks, Olaf!  (by the way:
                    872:     that code must be wonderful, I don't understand it at all *bg*)
                    873:     Olaf's printf does understand padding like in "%08d" and "%8d" and
                    874:     automatically pads pointers with '0'.
                    875:   Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
                    876:   Thanks to proton for inspiration on this.
                    877:   The new x86 start code also does not reference exit any more, thus saving
                    878:   64 bytes for executables that don't call exit explicitly.
                    879:     [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
                    880:   Moved errno and environ to start.S, saving no byte binary size but
                    881:     speeding up compilation and slightly shortening dietlibc.a ;-)
                    882:   For x86: joined open and close into one assembler file, sharing the
                    883:     errno handling.  This is a feasibility test and it actually saves a
                    884:     few bytes.  I think I will reimplement the _syscall[1-6] macros on
                    885:     all platforms now to share the errno handling code for them.
                    886: 
                    887: 0.5.8:
                    888:   fixed strchr to be able to look for 0.
                    889: 
                    890:   added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
                    891:   memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
                    892:   strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
                    893:   contributed by Olaf Dreesen)
                    894: 
                    895:   added execvp, getcwd
                    896: 
                    897:   fixed __xmknod
                    898: 
                    899:   Note: can it be that the ftw interface really is so broken that I
                    900:   cannot implement it without having to implement some searching data
                    901:   structure?  I included an experimental ftw implementation that will
                    902:   not follow symlinks.
                    903: 
                    904: 0.5.7:
                    905:   oops, if_nametoindex was broken!
                    906: 
                    907: 0.5.6:
                    908:   ported to ppc-linux.
                    909:   fixed i386 sigsetjmp (I mistyped the function name)
                    910:   included sigjmp.c
                    911: 
                    912: 0.5.5:
                    913:   added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
                    914:   actually, it wasn't fork that wasn't working for sparc, it was pipe.
                    915:   I fixed it now.
                    916:   dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
                    917:   fixed readdir to use getdents and not the intel inline asm
                    918: 
                    919: 0.5.4:
                    920:   ported to sparclinux (sparc32 only).  Beware: does not work yet.
                    921:   added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
                    922: 
                    923: 0.5.3:
                    924:   added tcsetattr and getenv to compile e3
                    925: 
                    926: 0.5.2:
                    927:   added vhangup, tcgetattr, isatty and memcmp for fgetty
                    928:     (http://www.fefe.de/fgetty/)
                    929:   added localtime from uC-libc.
                    930: 
                    931: 0.5.1:
                    932:   stat and friends actually work now.  Yuck!  Another case of
                    933:     translation between kernel and userland.  Why can't the kernel
                    934:     people and the libc people simply agree on a standard?
                    935:   removed many unnecessary includes to speed up compilation.
                    936:   added -fomit-frame-pointer and i386 compilation target to reduce code size.
                    937:   inlined socketcall to reduce code size.
                    938:   "load" and "compile" are examples for djb code.
                    939: 
                    940: 0.5:
                    941:   Olaf Dreesen contributed a much smaller implementation of malloc and friends.
                    942:   each object file is now treated with "strip -x -R .note -R .comment"
                    943:   split each system call into a separate object file
                    944:   added ntohs, htons, alarm, if_indextoname and if_nametoindex
                    945: 
                    946: 0.4.1:
                    947:   oops, the strchr implementation was wrong.  Thanks Jens Laas!
                    948: 
                    949: 0.4:
                    950:   copied opendir and friends from uC-libc.
                    951:   added getservent and getservby* in gerservent.c
                    952: 
                    953: 0.3:
                    954:   remove readdir system call
                    955:   added getdents system call
                    956:   added getpwnam/getpwuid implementation in getpwnam.c
                    957:   added a few string functions (in str*.c)
                    958: 

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