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Sydney Customer Support Centre OpenVMS ECO information
    Updated: 24-SEP-2003 (Use your browsers' Reload button to ensure you're viewing the most recent version)

ALPY2K01_071 Alpha V7.1 - V7.1-1H2 Year 2000 ECO Summary

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    Copyright (c) Compaq Computer Corporation 1997, 1998.  All rights reserved.
    
    Modification Date:  02-APR-99
    Modification Type:  Updated Documentation:
                        This kit does not need to be installed on
                        OpenVMS Alpha V7.1 systems if the current
                        version of the ALPBASE0x_071 ECO kit is
                        already installed.  The ALPBASE kit will
                        make the system Y2K compliant.
    
    Modification Date:  14-NOV-2001
    Modification Type:  Note added regarding this kit is no longer
                        available through SSB.
    
    WORKAROUND FOR COSMETIC ERROR INTRODUCED BY THIS KIT:
    
      PROBLEM STATEMENT:
    
        This kit fails to replace image LBRSHR.EXE in
        SYS$COMMON:[SYSLIB]IMAGELIB.OLB.
    
      PROBLEM SYMPTOM:
    
        If you try to link against a routine in the LBRSHR image, the
        following informational message can occur:
    
          %LINK-I-DATMISMCH, creation date of d2-mmm-yyyy hh:mm in
            shareable image
          SYS$COMMON:[SYSLIB]LBRSHR.EXE;2 differs from date of
            d1-mmm-yyyy hh:mm in Shareable image library
            SYS$COMMON:[SYSLIB]IMAGELIB.OLB;2
    
        The date d2-mmm-yyyy reflects the LBRSHR image left by the Y2K
        ECO kit, while the  d1-mmm-yyyy date reflects the date when
        LBRSHR was last replaced in the library.
    
      SOLUTION:
    
        Execute the following DCL command to avoid getting the informational
        message:
    
          $ LIBRARY/REPLACE SYS$COMMON:[SYSLIB]IMAGELIB.OLB -
            _$ SYS$COMMON:[SYSLIB]LBRSHR.EXE
    
    OP/SYS:      DIGITAL OpenVMS Alpha
    
    COMPONENTS:  CLUE$SDA
                 DECC$SHR
                 DUMP
                 EXCHANGE
                 F11BXQP
                 LIBRSHR
                 MTAAACP
                 TECOSHR_TV
                 VERIFY
                 VMS$REMEDIAL_ID
                 STARLET.OLB
    
    SOURCE:      Compaq Computer Corporation
    
    ***********************************************************************
    *                            NOTE                                     *
    *                                                                     *
    *         THIS KIT IS NO LONGER AVAILABLE THROUGH SSB.                *
    *                                                                     *
    ***********************************************************************
    
    ECO INFORMATION:
    
         ECO Kit Name:  ALPY2K01_071
         ECO Kits Superseded by This ECO Kit:  ALPVERI01_071 (V7.1 *ONLY*)
                                               ALPF11X02_071
                                               ALPACRT03_071
         ECO Kit Approximate Size:  20448 Blocks
         Kit Applies To:  OpenVMS Alpha V7.1, V7.1-1H1, V7.1-1H2
         System/Cluster Reboot Necessary:  Yes
    
         Installation Rating:  INSTALL_1
                               1 - To be installed on all systems running
                                   the listed version(s) of OpenVMS.
    
                               This kit does not need to be installed on
                               OpenVMS Alpha V7.1 systems if the current
                               version of the ALPBASE0x_071 ECO kit is
                               already installed.  The ALPBASE kit will
                               make the system Y2K compliant.
    
         NOTE:  In order to receive the full fixes listed in this kit,
                the following remedial kits also need to be installed:
    
                     None
    
    
    ECO KIT SUMMARY:
    
    An ECO kit exists for several components of OpenVMS Alpha V7.1.  This
    kit addresses the following problems:
    
    These release notes identify certain conditions you should be
    aware of when preparing your OpenVMS environment for the year
    2000. This kit contains minor modifications to several older
    components of the operating system; other conditions are simply
    noted here, but need no changes. Release notes are included for
    the following facilities that run on the OpenVMS platform:
    
      o  Crash Log Utility Extractor (CLUE) (Alpha only; see
         Release Notes Section 2.1)
    
      o  EXCHANGE (See Release Notes Section 5.1.2)
    
      o  RSX-11 backwards compatible code:
    
         -  File system $QIO interface (See Release Notes Section 5.1.3.1)
    
         -  ODS-1 file format (VAX only; see Release Notes Section 5.1.3.2)
    
      o  Run-time libraries (See Release Notes Section 5.1.4)
    
      o  TECO editor (See Section Release Notes 5.1.5)
    
         The TECO problem actually does not occur until 2028, but
         Andy figured he'd just go right ahead and fix it for you now
         because he expects to be retired by then!
    
      o  This kit also includes fixes unrelated to the year 2000 for the
         Analyze/Disk_Structure utility, the Files-11 XQP file system,
         and the DEC C Run-Time Library. These fixes were released earlier
         in separate kits, but now have been incorporated into this kit.
         Release notes from those kits are included in Appendix A.
    
      o  The CLUE history listing file contains a 2-digit year format in
         its file name, which has this format:
    
             CLUE$node_ddmmyy_hhmm.LIS
    
         This file format poses no year 2000 problem in itself, but
         the code that generates this date has been changed from using
         a subtract operation to using a modulo function so that the
         correct date will still be calculated in the year 2000. This
         change has no visible effect on the file name format.
    
      o  When the EXCHANGE utility is used to transfer files between
         OpenVMS and RT-11 or DOS-11 systems, date problems could occur
         starting in the year 2004 for RT-11 and in the year 2036 for
         DOS-11.
    
                                    NOTE
    
              RT-11 volumes are also used as console storage media on
              certain older VAX systems.
    
      o  This kit contains an enhancement to EXCHANGE that makes the
         RT-11 date format continue to function correctly until the year
         2099.
    
                                    NOTE
    
              DIGITAL transferred the RT-11 operating system, along with
              other PDP-11 software, to Mentec in 1994.
    
      o  The following sections describe conditions you should be aware
         of if you interoperate with RSX-11 or if you use RSX-11 software
         on your OpenVMS system.
    
      o  The file system $QIO interface supports several attributes for
         RSX-11 compatibility. Of these, ATR$C_EXPDAT and ATR$C_ASCDATES
         return the file creation date, revision date, and expiration
         date using 2-digit years.
    
         These attributes are not normally used by native code and can be
         replaced with the following documented, compliant interfaces:
    
             ATR$C_CREDATE
             ATR$C_EXPDATE
             ATR$C_REVDATE
    
         The file system $QIO interface is provided by the following file
         systems:
    
             DIGITAL TCP/IP Network File System (NFS) client
             Distributed File System (DECdfs)
             Magnetic Tape ACP
             OpenVMS ODS-1 file system (VAX only; see Release Notes,
                                        Section 5.1.3.2)
             OpenVMS ODS-2 file system
             Spiralog file system (Alpha only)
    
      o  For RSX-11 compatibility, OpenVMS VAX supports ODS-1 file format
         disk volumes. The ODS-1 file system uses a 2-digit year format
         internally, and current implementations have limitations for the
         year 2000.
    
             ODS-1 data structures use a 2-digit year (ddmmmyy) in the
             following items:
    
                 FI1$T_CREDATE
                 FI1$T_CRETIME
                 FI1$T_EXPDATE
                 FI1$T_REVDATE
                 FI1$T_REVTIME
                 HM1$T_CREDATE
    
             The OpenVMS VAX file system and the following OpenVMS utilities
             that support the ODS-1 file system format have been modified to
             correctly interpret these 2-digit years until the year 2057:
    
                 Analyze/Disk_Structure Utility
                 Backup Utility
                 Dump Utility
                 Librarian (LBR) routines
                 Magnetic tape ACP
    
                                      NOTE
    
             Even though we are updating the ODS-1 code for the year
             2000, DIGITAL strongly recommends that users of ODS-1
             formatted media move to a newer file format by the year
             2000.
    
      o  The following sections describe year 2000-related conditions in
         the run-time libraries.
    
         -  In the run-time library, the LIB$CONVERT_DATE_STRING routine
            allows the user to select a 2-digit year format (as well as
            many others). This routine interprets 2-digit years as belonging
            to the century in which the system is currently running
            (according to the system clock). For example, in the 1900s, 61
            is interpreted as 1961, and starting January 1, 2000, 61 will be
            interpreted as 2061. If this behavior could produce unexpected
            results on your system, select one of the alternatives to the
            2-digit year format.
    
                                    NOTE
    
                This behavior has been documented in the OpenVMS RTL
                Library (LIB$) Manual since Version 6.0, so we will not
                change the code. No customer should be penalized for
                reading the documentation and complying with our stated
                intentions!
    
      o  The following release notes describe year 2000-related conditions
         in the DEC C Run-Time Library.
    
                                    NOTE
    
                 This kit also contains DEC C RTL fixes not related to
                 the year 2000. These fixes were previously released in a
                 separate kit. Release notes for those fixes are included
                 in Section A.3.
    
      o  In OpenVMS Versions 7.0 and 7.1, the DEC C Run-Time Library
         function times() returns the number of clock ticks since
         boot time. A clock tick is 1/100th of a second, which allows
         the routine to represent approximately 250 days. Therefore,
         an error can occur if you set the system clock ahead more
         than 250 days to perform year 2000 testing.
    
             The DEC C Run-Time Library has changed the reference point
             from SYI$_BOOTTIME to JPI$_LOGINTIM to avoid this testing
             error.
    
      o  Some XPG4 locales in the DEC C Run-Time Library display dates
         with 2-digit years. These are coded in accordance with the
         X/Open Company Limited specification and cannot be changed.
         For your information, the following locale source files in
         the Alpha ACRTL facility and the VAX CRTL facility use %y to
         denote a 2-digit year:
    
              DA_DK_ISO8859-1.LSRC
              DE_CH_ISO8859-1.LSRC
              DE_DE_ISO8859-1.LSRC
              EN_US_ISO8859-1.LSRC
              ES_ES_ISO8859-1.LSRC
              FI_FI_ISO8859-1.LSRC
              FR_BE_ISO8859-1.LSRC
              FR_CA_ISO8859-1.LSRC
              FR_CH_ISO8859-1.LSRC
              FR_FR_ISO8859-1.LSRC
              IS_IS_ISO8859-1.LSRC
              IT_IT_ISO8859-1.LSRC
              IW_IL_ISO8859-1.LSRC
              NL_BE_ISO8859-1.LSRC
              NO_NO_ISO8859-1.LSRC
              PT_PT_ISO8859-1.LSRC
              SV_SE_ISO8859-1.LSRC
    
      o  This kit includes two minor changes to the TECO editor.
    
         -  The date value in the TECO editor has been extended to a
            longword so that the year value returned by the Ctrl/B
            function will not overflow on 01-JAN-2028.
    
         -  This kit also fixes a TECO problem that is unrelated to
            dates. The UIC value returned by the 2EJ function was
            incorrect if the process UIC had a group or member number
            greater than 377.
    
            For compatibility reasons, the 2EJ value cannot be changed.
            However, the problem has been fixed by the following
            changes:
    
              *  All group and member numbers that exceed a byte are now
                 mapped to 377 (octal).
    
              *  A 3EJ function has been implemented to return the longword
                 UIC.
    
                 The following TECO example demonstrates the change.
                 NOTE:  The ESCAPE (<ESC>) sequence can be entered on most
                 keyboards by typing Ctrl/[.
    
                   $ SET UIC [1234,567]
                   $ TECO
                   *3EJ/65536==<ESC><ESC>
                   1234
                   *3EJ&65535==<ESC><ESC>
                   567
    
    
    Problems Addressed in the ALPVERI02_071 Kit:
    
      o  The ALPVERI01_071 remedial kit, which applied to V6.1 through V7.1
         is being reissued as single version kits.  There are no new fixes in
         this kit.  If you have installed the ALPVERI01_071 remedial kit you
         do not need to install this kit.
    
    
    Problems Addressed in the ALPVERI01_071 Kit:
    
      o  ANALYZE/DISK goes into an infinite loop.
    
         VERIFY has incorrectly 'fixed' the backlink of a lost directory to
         point to itself.  The next time VERIFY is run, it encounters the
         lost directory and goes into a tight loop following the directory's
         backlink.
    
    PROBLEMS ADDRESSED IN ALPF11X02_071 KIT FOR OPENVMS V7.1
    
      o  The problem occurs when we fail to get the access  lock  on  a
         newly  created  file.   This  happened  because  the  previous
         version of the file  had  been  deleted  while  it  was  still
         accessed,  and  the new version created before the access lock
         was dropped.
    
         The file could be deleted while it was still accessed  because
         a stale directory FCB with the same FID was left on the queue,
         and the delete operation found this FCB rather than  the  real
         FCB of the file.
    
    
      o  Bad FID bugcheck when trying to mark a file header free in the
         index file bitmap.
    
         Multiply allocated blocks and file headers on disk.  Processes
         hanging  in  an  RWAST  state  while trying to deaccess a file
         during channel deassignment.  System hangs during cluster wide
         cache flushes.
    
      o  Two coding errors were caught during  code  review.   They  are
         thought  to represent very rare failure modes and have not been
         matched to any known problem footprints.
    
            -  The contents of a header or bitmap block could be corrupted
               within the block buffer cache.
    
            -  Failure to take an allocation lock could be ignored.
    
      o  If a DEACCESS request  failed  with  a  SS$_DEADLOCK  error,  a
         process could be left in RWAST state indefinitely.
    
      o  If a large file is created on a  fragmented  disk  with  quotas
         enabled and the user needs to use EXQUOTA privilege to allocate
         the necessary disk space, an  internal  XQP  table  can  become
         corrupted  leading  to  SECAUDERR,  Fatal  error  attempting to
         perform a security audit bug-checks.
    
      o  Superseding a file with a version  limit  set  can  remove  the
         oldest version of a file even if that version is undeletable by
         the user according to its protection mask or ACL.  The file  is
         removed   but   not   deleted,   and   can   be   recovered  by
    
      o  Attempting to queue a maximal length (39.39;5) filename to  the
         XQP  for  spooling to a symbiont would cause either an infinite
         CPU loop or a FILCNTNONZ, Open file count nonzero after process
         rundown bugcheck.
    
    
    PROBLEMS ADDRESSED IN ALPF11X01_071 KIT FOR OPENVMS V7.1
    
      o  The problem occurs when a file is  deleted  while  still  being
         accessed  by someone.  This produces an XQPERR bugcheck when an
         attempt is made to access the deleted file.
    
      o  The problem may result in an XQPERR bugcheck which claims that:
         "all  the  index buffers are active" during the processing of a
         directory file.
    
         The problem occurs when no  free  directory  index  BFRD's  are
         found  on the first pass through MAKE_DIRINDX.  The thread then
         stalls to allow some of the BFRD's to  be  freed,  but  doesn't
         release  the  cache  lock  which would allow others to do this.
         This means that if no free BFRD was found on the first try then
         none will be found on subsequent tries either, and the bugcheck
         will occur.
    
    
      o  The fault occurs as a UNXSIGNAL Bugcheck after running autogen,
         and rebooting with very large SYSGEN ACP cache parameters.
    
         The  problem  occurs  when  the  calculation  of   DIRINDX   in
         RELEASE_LOCKBASIS  overflows.   This is due to a multiplication
         taking place before a division, which overflows when more  than
         87381  blocks  have  been  allocated  between the ACP_MAPCACHE,
         ACP_DIRCACHE and ACP_HDRCACHE caches.
    
    Problems addressed in ALPACRT03_071:
    
      o  Users have requested that kill support the POSIX  semantics  of
         "if  the  process id is negative but not -1, the signal will be
         sent to all processes whose group ID is equal to  the  absolute
         value  of  the  process  id,  and  for  which  the  process has
         permission to send a signal." This  has  been  added  with  the
         restrictions that the process is executing on the same node and
         does not have a SYSTEM UIC.  The errno value is set to ESRCH if
         no processes are found which match the condition specified.
    
      o  An enhancement was made in the DEC C V5.6 compiler to  optimize
         certain  format  strings passed to the printf family of library
         functions.  This ECO  kit  adds  the  runtime  support  to  the
         shareable  image.  Prior to this, the symbols were resolved via
         objects added to STARLET by the compiler.  Full details of this
         support can be found in the DEC C V5.6 release notes.
    
      o  The performance of DEC C sprintf was much slower  than  VAX  C.
         An  analysis  of  the  printf  engine resulted in changes which
         brings DEC C within 10% of VAX C.
    
      o  The functions fopen and freopen  were  mapping  invalid  access
         modes to read mode.  Invalid modes now cause errno to be set to
         EINVAL and the open call to fail.
    
      o  The times function was changed in OpenVMS V7.0  to  return  the
         number  of  clock  ticks since boot time.  Performing year 2000
         testing by setting the system time forward causes  this  return
         value  to  overflow.   The  times  function has been changed to
         return the number of clock ticks since  login  time,  which  is
         less likely to overflow.
    
      o  The lseek function may position incorrectly with repeated calls
         to  seek,  in  a  file  containing  fixed length records of odd
         length.  This problem  does  not  occur  with  even  length  or
         variable length records.
    
      o  Mailbox  devices  are  record  oriented  devices,  except  when
         created  by  the  pipe function where they are opened as stream
         devices.  Applications which use mailboxes can  now  force  the
         library to treat all mailboxes as stream devices by creating an
         environment variable named DECC$MAILBOX_CTX_STM.
    
      o  The runtime library has been corrected to treat UNIX  directory
         specifications identically in each of the routines which accept
         a  directory  specification  as  a  parameter.   These  runtime
         library functions are access, opendir, mkdir, and rmdir.  Prior
         to this change, one could call opendir with "/dev/dir", but was
         forced  to  append  ".dir"  to  this  when  calling  the access
         function.
    
      o  This ECO kit includes major performance improvements when using
         time related functions along with Universal Coordinated Time.
    
      o  A cache of values has been added  to  the  getenv  function  to
         avoid  the library making repeated calls to translate a logical
         name or to obtain a  symbol  value  for  environment  variables
         which  are  not set.  If your application makes direct calls to
         set logical names, this caching can  be  disabled  by  defining
         DECC$DISABLE_GETENV_CACHE  prior to calling any runtime library
         functions.
    
      o  The ANSI standard states that streams opened in update mode may
         read  and  write  to  the stream.  It further states that reads
         must be followed by file positioning prior to  writing  to  the
         stream.   The  problem corrected was that positioning functions
         would fail when the file was a terminal.  Applications may  now
         position such streams back to the beginning using either rewind
         or seek.
    
      o  It was reported that opendir overflowed the stack when  running
         in  a threaded application.  While correcting this problem, the
         opendir successful return value was changed from one to zero to
         align with the X/Open Specifications.
    
      o  A problem introduced in OpenVMS V7.1 causes the first record of
         a  file  to  be  overwritten  when the file is opened in append
         mode.  The correct behavior is that all  write  operations  are
         done at the end of the file.
    
      o  Porting code to OpenVMS is hampered by the  difference  between
         command  procedures  and  executable  images and the mechanisms
         necessary to invoke them.  When passed the string  "TEST",  the
         exec   functions   now  searches  for  "TEST.","TEST.EXE",  and
         "TEST.COM".  If found, it is executed as either an image  or  a
         command procedure, depending on information in the file header.
    
      o  Several new universals have been added to  the  DECC$SHR  image
         shipped  with  this  ECO kit.  The presence of these universals
         may affect application developers who compile using this image.
         If a developer begins to get errors of the form
    
         %LINK-W-MULDEF, symbol DECC$XXX multiply defined
         in module DECC$SHR file SYS$COMMON:[SYSLIB]DECC$SHR.EXE;1
    
         while linking the application, the compile  command  should  be
         modified  to  include "/PREFIX=EXCEPT=XXX".  This instructs the
         compiler to exclude this function when  doing  name  prefixing,
         which is equivalent to the behavior prior to this ECO kit.
    
      o  The printf function was enhanced to print "(null)" when  passed
         a  null  pointer  to  be  used  with the "%S" format specifier.
         Prior to this, the DEC C RTL would issue  an  access  violation
         error.
    
      o  Several functions were found to not accept  the  angle  bracket
         form  of  directory  specifications.   These  functions include
         decc$translate_vms and stat, which  now  accept  either  square
         brackets  or  angle  brackets  in the directory portion of file
         specifications.
    
      o  The exec functions  use  a  mailbox  to  coordinate  open  file
         information  between  the  parent  and child processes.  A user
         reported their system hung after 1000 successful invocations of
         the  same  child  process.   This hang was caused by the parent
         process failing to release an exclusive mode lock being used to
         coordinate  access to the mailbox.  The hang would occur when a
         mailbox was assigned to the parent process for a second time.
    
      o  A user reports calling ioctl sets errno to ENOSYS (Function not
         implemented).   Beginning  with OpenVMS V7.0, the library looks
         for support in the underlying TCPIP stack and sets  this  error
         if the support is not found.  The function has been enhanced to
         execute UCX$EXAMPLES:UCX$IOCTL_ROUTINES under these conditions.
    
      o  The decc$to_vms function has been enhanced to  recognize  names
         found  on  other  systems,  converting  "/dev/null" to "NLA0:",
         "/tmp" to "SYS$SCRATCH:", and "/bin" to "SYS$SYSTEM:".
    
      o  The getpwnam function now uppercases the username parameter  if
         it  is  not  found in its original form.  Prior to this change,
         the function would fail.
    
    
    Problems addressed in ALPACRT02_071:
    
      o  Those functions, such as printf,  which  have  thread  specific
         data  incorrectly  use  the  threads  interface to release that
         memory when a thread is being destroyed.  The  result  is  that
         all thread specific memory is lost.
    
      o  The read, fread, write, and fwrite  DEC  C  RTL  functions  now
         return  unsuccessful  status with errno set to EINVAL if one of
         the arguments of size_t type or total number  of  bytes  to  be
         transmitted is not in the range 0 to INT_MAX.  The total number
         of bytes is the product of the  size_of_item  and  number_items
         arguments for fread and fwrite functions.  The value of INT_MAX
         is defined in the <limits.h> header file.
    
      o  The interval timer function, setitimer, fails to  reset  itself
         when  used  in  a  multithreaded  application.  The result is a
         single firing of the timer as opposed to repeated firing of the
         timer at fixed intervals.
    
      o  A change made in  OpenVMS  V7.1  and  remedial  kits  to  other
         versions  cause calls to the mktemp function using templates of
         the form "dumpXXXXXX.txt" to no longer substitute  the  pattern
         with  the  process id.  While a change is necessary to prohibit
         substituting the  directory  portion  in  a  template  such  as
         "[XX]dumpXXXXXX",  the  change  that was made was overly harsh,
         forcing all substitution to the end of the pattern.
    
      o  The strstr function accesses memory  beyond  the  ends  of  the
         strings   passed.    In  cases  where  the  next  page  is  not
         accessable, the result is an access violation.  The problem was
         reported  against  the  ADA  compiler,  which  uses  the strstr
         function in this way.
    
      o  Although files in  general  are  correctly  inherited  after  a
         fork/exec  function call, files which are opened in any sort of
         sharing mode are not.
    
      o  The ECO kits ALPACRT01_071 and VAXACRT01_071  made  changes  to
         the  return  value of the puts and fputs routines.  While these
         changes were in line with the documentation, which states  that
         they   return   non-negative   numbers   on  success,  specific
         applications were coded to expect zero as success.  Since  this
         zero return value was documented with the VAXC product, we have
         restored the original behavior.
    
      o  When accessing files in  stream  mode,  closing  the  file  may
         result  in an extra byte being written to the file.  While this
         byte is not seen using the type command, it may  be  seen  when
         using the dump utility.
    
      o  A customer reports that the functions atof, strtod, and  wcstod
         incorrectly  return  HUGE_VAL  values  when  compiling with the
         IEEE_FLOAT and an ieee_mode qualifier of  DENORM_RESULTS.   The
         results  returned  have  been  modified to take the compilation
         mode of the calling program into account.  The return value can
         now be compared against HUGE_VAL.
    
      o  The following code segment demonstrates a problem in the printf
         family of functions running on OpenVMS for Alpha.
    
              double n;
              for (n = 9.0e16;  n < 11.0e17;  n += 1.0e+17)
                  printf ("%20.0f\n", n);
    
         The result is that the final zero is missing in the display  of
         all but the first and last line.
    
    
    Problems Addressed in ALPACRT01_071:
    
      o  Calling stat from two separate threads will cause them to
         interfere with one another.  The stat function has been
         modified to use a thread-specific buffer to store data.
    
      o  Extra <lf> characters are seen on occasion when using a
         subprocess which sends data back to the parent process
         using a mailbox.
    
      o  A case has been found where the fseek function fails,
         correctly returns -1 value, but fails to set errno properly.
    
      o  One of the arguments to the decc$to_vms function is "allow_wild"
         which is documented to accept the values zero and one.  If
         wildcards are used in the file specification, they are either
         rejected or expanded into the resultant file specifications.
         Passing a value of -1 for the allow_wild parameter now returns
         the file specifications with the wildcards intact, but after
         having prepared to the point of doing a sys$search.
    
      o  Unlike Digital UNIX, the fsync(socket_id) call results in an
         access violation instead of returning an EINVAL status.
    
      o  A user reports and demonstrates that opening and closing
         sockets does not properly release mutexes which eventually
         causes the resource to be exhausted.  This problem was
         introduced in OpenVMS V7.0.
    
      o  Applications which call opendir and readdir recursively
         to traverse subdirectories may end up in an infinite loop
         when reading the directory which includes returning the
         [000000]000000.DIR.  The readdir function no longer returns
         an entry which is equivalent to the directory being read.
    
    
      o  OpenVMS V7.1 changed the behavior of the readdir function
         so that it no longer retains the ".dir" extension when
         returning a directory using the UNIX file syntax.  Applications
         which rely on this extension can now define a the
         DECC$READDIR_KEEPDOTDIR logical to restore this behavior.
    
      o  Beginning with OpenVMS V7.1, the DEC C Runtime Library does
         not read the first record while opening the file if such
         preloading will cause RMS to lock the record.  Several reports
         have been made which stated that images which used to work
         fine now fail.  The preloading code record has been modified
         to take these programs into account.
    
    
    Y2K
    Year 2000
    
    RELATED ARTICLES:
    
    Detailed articles describing the problems listed above may exist in
    the OPENVMS and DEC-TCPIP database(s).  To view these articles, open
    the appropriate product database and perform a query using either of
    the following search strings: 'ALPY2K01_071', 'ALPY2K', 'ALPVERI',
    'ALPF11X', or 'ALPACRT'.
    
    
    ECO KIT ORDERING INSTRUCTIONS:
    
    If after an evaluation you wish to obtain this kit, request it
    electronically using the appropriate Advanced Electronic Services
    (AES) Service Tool.  If you are not familiar with how to request
    kits electronically, open the DIA, WIS or DSNLINK database and
    review the article entitled:
    
         [AES] How To Electronically Request ECO Kits Using Service Tools
    
    
    INSTALLATION NOTES:
    
    In order for the corrections in this kit to take effect, the system must
    be rebooted.  If the system is a member of a VMScluster, the entire
    cluster should be rebooted.
    
    During the kit installation you will be prompted with options to print
    and/or display the release notes.
    
    You may also see the following messages during the installation
    procedure:
    
      %INSTALL-E-NODELSHRADR, unable to delete image with shareable
                              address data
      -INSTALL-I-PLSREBOOT, please reboot to install a new version of
                            this image
    
    Do not be concerned. These messages announce that DECC$SHR.EXE was
    installed as a resident image, which is the standard configuration
    for OpenVMS Version 7.1 systems. The new image will take effect when
    the system is rebooted.
      
      ==========================================================================
      |                     Table of Kit Image Information                     |
      +----------------------------+----------+-----------------+--------------+
      |                            | Overall  | Image File      | Image Link   |
      | Image Name                 | Checksum | Identification  | Date/Time    |
      +----------------------------+----------+-----------------+--------------+
      | CLUE$SDA.EXE               | A77B98A0 | X-5             | 15-OCT-1997  |
      |                                       |                 | 23:49:11.45  |
      +----------------------------+----------+-----------------+--------------+
      | DECC$SHR.EXE               | 6DA3C3DE | X07.1-4         | 15-OCT-1997  |
      |                                       |                 | 23:37:40.29  |
      +----------------------------+----------+-----------------+--------------+
      | DUMP.EXE                   | 4D0A075B | X-12            | 15-OCT-1997  |
      |                                       |                 | 23:45:47.41  |
      +----------------------------+----------+-----------------+--------------+
      | EXCHANGE.EXE               | 3423FC84 | X-3             | 15-OCT-1997  |
      |                                       |                 | 23:45:45.49  |
      +----------------------------+----------+-----------------+--------------+
      | F11BXQP.EXE                | E6F7C3DB | XQP V7.1R-0002  | 15-OCT-1997  |
      |                                       |                 | 23:48:51.29  |
      +----------------------------+----------+-----------------+--------------+
      | LBRSHR.EXE                 | B1AB7CCA | A09-22          | 15-OCT-1997  |
      |                                       |                 | 23:38:39.11  |
      +----------------------------+----------+-----------------+--------------+
      | MTAAACP.EXE                | 7890F469 | X-7             | 15-OCT-1997  |
      |                                       |                 | 23:47:57.51  |
      +----------------------------+----------+-----------------+--------------+
      | TECOSHR_TV.EXE             | AAEBC836 | TECOSHR V40.37  |  2-SEP-1997  |
      |                                       |                 | 23:42:05.32  |
      +----------------------------+----------+-----------------+--------------+
      | VERIFY.EXE                 | 5E46D48F | X-23            | 15-OCT-1997  |
      |                                       |                 | 23:47:58.03  |
      +----------------------------+----------+-----------------+--------------+
      | VMS$REMEDIAL_ID.EXE        | 5B39A7EE | V1.0            | 21-OCT-1997  |
      |                                       |                 | 11:39:19.26  |
      +----------------------------+----------+-----------------+--------------+
    
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