OpenVMS ALPLIBR07_062 Alpha V6.2 - V6.2-1H3 LIBRTL ECO Summary

TITLE: OpenVMS ALPLIBR07_062 Alpha V6.2 - V6.2-1H3 LIBRTL ECO Summary
 
Modification Date:  25-AUG-98
Modification Type:  New Kit

NOTE:  An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
       The name of the compressed file will be kit_name-dcx_vaxexe
       for OpenVMS VAX or kit_name-dcx_axpexe for OpenVMS Alpha.
 
       Once the file is copied to your system, it can be expanded
       by typing RUN compressed_file.  The resultant file will
       be the OpenVMS saveset or PCSI installation file which
       can be used to install the ECO.
 
*OpenVMS] ALPLIBR07_062 Alpha V6.2 - V6.2-1H3 LIBRTL ECO Summary
 
Copyright (c) Compaq Computer Corporation 1998.  All rights reserved.

OP/SYS:     DIGITAL OpenVMS Alpha 

COMPONENT:  Run-Time Library

SOURCE:     Compaq Computer Corporation

ECO INFORMATION:

     ECO Kit Name:  ALPLIBR07_062 
     ECO Kits Superseded by This ECO Kit:  None 
     ECO Kit Approximate Size:  1728 Blocks
     Kit Applies To:  OpenVMS Alpha V6.2, V6.2-1H1, V6.2-1H2, V6.2-1H3
     System/Cluster Reboot Necessary:  Yes
     Rolling Re-boot Supported:  Yes
     Installation Rating:  3 - To be installed on all systems running
                               the listed versions of OpenVMS which
                               are experiencing the problems described.

     Kit Dependencies:

       The following remedial kit(s) must be installed BEFORE
       installation of this kit:

         ALPY2K02_062 

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

         None 


ECO KIT SUMMARY:

An ECO kit exists for the run time library on OpenVMS Alpha V6.2 
through V6.2-1H3.  This kit addresses the following problems: 

  o  If the  input  string  was  truncated  the  wrong  length  was
     returned  in  the resultant-length field from LIB$GET_FOREIGN.
     LIB$GET_FOREIGN was  returning  the  original  length  of  the
     string instead of the truncated length.

  o  The LIB$FIND_IMAGE_SYMBOL was  enhanced  in  OpenVMS  V7.1  to
     permit  a caller to look up a symbol containing both upper and
     lower case  characters.   Previously,  all  symbols  would  be
     converted to upper case before lookup.

     A new flag was added to the flags parameter to signify that  a
     symbol should be used "as is" and not converted to uppercase.

     The problem became more of a concern because  languages,  such
     as  C,  C++  and  Java [TM]  are  becoming  increasingly  more 
     case sensitive.

  o  LIB$VM_MALLOC (used by C RTL routine "malloc") obtains  memory
     using  $EXPREG.   In  the  case  where $EXPREG fails to return
     enough memory to satisfy  a  given  request,  such  "leftover"
     memory  is placed on a LIB$VM_MALLOC free list.  This tends to
     occur when a process has reached all its virtual address space
     limit,  or  for  some  reason  asks for an exceptionally large
     memory allocation.  The problem is that this "leftover" memory
     is  probably  the  last  memory  available to the process, and
     interferes with any "last ditch" attempts to recover.

     Another scenario is where a task can be performed in  2  ways,
     one  of  which  involves using a large amount of memory.  This
     can result in LIB$VM_MALLOC grabbing a large amount of virtual
     memory and putting it on its free list.


INSTALLATION NOTES:

The images in this kit will not take effect until the system is
rebooted.  If there are other nodes in the VMScluster, they must 
also be rebooted in order to make use of the new image(s).  

If it is not possible or convenient to reboot the entire cluster at 
this time, a rolling re-boot may be performed.

During installation you may see the following message:

  %INSTALL-E-NODELSHRADR, unable to delete image with shareable
        address data
   -INSTALL-I-PLSREBOOT, please reboot to install a new version
        of this image

This is not a cause for concern. It simply means that LIBRTL.EXE was
installed as a resident image, which is the standard configuration
for OpenVMS Alpha V7.1 systems. The new image will not take affect
until the system is rebooted.

[TM]   Java and Java-based trademarks and logos are trademarks or 
       registered trademarks of Sun Microsystems, Inc. in the U.S. 
       and other countries.

Files on this server are as follows:

»alplibr07_062.README
»alplibr07_062.CHKSUM
»alplibr07_062.CVRLET_TXT
»alplibr07_062.a-dcx_axpexe