ECO NUMBER:     VMS72_PTHREAD-V0200
             PRODUCT:        OpenVMS Alpha OPERATING SYSTEM 7.2
             UPDATE PRODUCT: OpenVMS Alpha OPERATING SYSTEM 7.2




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1  KIT NAME:

     VMS72_PTHREAD-V0200


2  KITS SUPERSEDED BY THIS KIT:

     VMS72_PTHREAD-V0100


3  KIT DEPENDENCIES:

     3.1  The  following  remedial  kit(s)  must  be  installed   BEFORE
          installation of this, or any required kit:

     VMS72_UPDATE-V0100


     3.2  In order to receive all the corrections listed  in  this  kit,
          the following remedial kits should also be installed:

     None.


4  KIT DESCRIPTION:

     4.1  Version(s) of OpenVMS to which this kit may be applied:

     OpenVMS Alpha V7.2


     4.2  Files patched or replaced:


      o  [SYSLIB]PTHREAD$RTL.EXE (new image)

      o  [SYSLIB]PTHREAD$DBGSHR.EXE (new image)



5  PROBLEMS ADDRESSED IN VMS72_PTHREAD-V0200 KIT


      o  A customer's application, when run with  upcalls  enabled,  can
         die  with  an  ACCVIO.   This is the result of a stack overflow
         while running the application's exit handling routine.

      o  When a  thread  calls  pthread_exit()  the  entire  process  is
         incorrectly terminated by a %CMA-F-EXIT_THREAD error instead of
         simply terminating the calling thread.

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      o  Pagefault completions accumulate (as observed via the  "pthread
         show  -u"  command  to  SDA),  with  the  corresponding waiting
         threads having been, apparently,  unblocked  without  consuming
         (i.e.,  freeing)  the completions.  Also, sometimes threads are
         found  waiting  indefinitely  for  completions  (although  this
         effect  was  never  successfully  reproduced  in-house),  while
         other, mismatched completions remain pending.

      o  Reduced performance and/or process threads hang.



6  PROBLEMS ADDRESSED IN VMS72_PTHREADTHE ALPPTHR02_071 REMEDIAL IT.


      o  ADA  compiles  were  erroneously  returning   'success'   after
         customers installed or upgraded to OpenVMS Alpha V7.2.

      o  ADA programs  using  certain  TEXT_IO  functions,  when  linked
         without upcalls enabled, may hang with the manager thread ready
         to run, but not running.  Instead, the null thread is  running.
         Also, the PTHREAD$RTL.EXE image produces an UNALIGNRELO warning
         upon linking of the image.

         Images(s) affected:

         1.  [SYSLIB]PTHREAD$RTL.EXE

         2.  [SYSLIB]PTHREAD$DBGSHR.EXE




7  KIT INSTALLATION RATING:

     The following kit  installation  rating,  based  upon  current  CLD
     information,  is  provided  to  serve as a guide to which customers
     should apply this remedial kit.  (Reference attached Disclaimer  of
     Warranty and Limitation of Liability Statement)

     INSTALLATION RATING:

       INSTALL_2 : To  be  installed  by   all  customers  using  the  following
           feature(s):  DECthreads



8  INSTALLATION INSTRUCTIONS:

     Install this kit with the POLYCENTER Software Installation  utility
     by logging into the SYSTEM account, and typing the following at the
     DCL prompt:

     PRODUCT INSTALL VMS72_PTHREAD /SOURCE=[location of Kit]

     The kit location may be a tape drive, CD, or a disk directory that

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     contains the kit.

     Additional help on installing PCSI kits can be found by typing
     HELP PRODUCT INSTALL at the system prompt


     No reboot is necessary after successful installation of  this  kit.
     However,  to  make  use  of  the  new  images on other nodes in the
     cluster you must  execute  the  following  instructions  after  kit
     installation completes.

     1.  $ SET PROCESS/PRIV=OPER

     2.  $ MCR SYSMAN

     3.  SYSMAN> SET ENVIRONMENT/NODE=(NODE_1,NODE_2,NODE_N)***

     4.  SYSMAN> SET PROFILE/PRIV=(CMKRNL,SYSGBL)

     5.  SYSMAN> DO INSTALL REPLACE SYS$SHARE:PTHREAD$RTL

     6.  SYSMAN> EXIT


     *** list any other nodes that boot from the system disk that the kit was 
         installed on.  You do not need to include the node that was used to 
         install the kit.




     Copyright  (c)  Compaq  Computer  Corporation,  1999   All   Rights
     Reserved.   Unpublished rights reserved under the copyright laws of
     the United States.

     The software contained on this media is proprietary to and embodies
     the   confidential   technology  of  Compaq  Computer  Corporation.
     Possession, use, or dissemination of  the  software  and  media  is
     authorized  only  pursuant  to  a valid written license from Compaq
     Computer Corporation.

     DISCLAIMER OF WARRANTY AND LIMITATION OF LIABILITY

     THIS PATCH IS PROVIDED AS IS, WITHOUT WARRANTY OF  ANY  KIND.   ALL
     EXPRESS  OR  IMPLIED  CONDITIONS,  REPRESENTATIONS  AND WARRANTIES,
     INCLUDING ANY IMPLIED  WARRANTY  OF  MERCHANTABILITY,  FITNESS  FOR
     PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED TO THE
     EXTENT PERMITTED BY APPLICABLE LAW.  IN NO  EVENT  WILL  COMPAQ  BE
     LIABLE  FOR  ANY  LOST REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT,
     CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER  CAUSED  AND
     REGARDLESS  OF  THE  THEORY OF LIABILITY, WITH RESPECT TO ANY PATCH
     MADE AVAILABLE HERE OR TO THE USE OF SUCH PATCH.