OpenVMS VMS712_LIBRTL-V0100 Alpha V7.1-2 LIBRTL ECO Summary
TITLE: OpenVMS VMS712_LIBRTL-V0100 Alpha V7.1-2 LIBRTL ECO Summary
New Kit: 24-JAN-2001
Modification Date: 06-MAR-2001
Modification Type: Documentation: Corrected kit name in Kit
Dependencies section.
NOTE: An OpenVMS saveset or PCSI installation file is stored
on the Internet in a self-expanding compressed file.
For OpenVMS savesets, the name of the compressed saveset
file will be kit_name.a-dcx_vaxexe for OpenVMS VAX or
kit_name.a-dcx_axpexe for OpenVMS Alpha. Once the OpenVMS
saveset is copied to your system, expand the compressed
saveset by typing RUN kitname.dcx_vaxexe or kitname.dcx_alpexe.
For PCSI files, once the PCSI file is copied to your system,
rename the PCSI file to kitname-dcx_axpexe.pcsi, then it can
be expanded by typing RUN kitname-dcx_axpexe.pcsi. The resultant
file will be the PCSI installation file which can be used to install
the ECO.
Copyright (c) Compaq Computer Corporation 2000. All rights reserved.
OP/SYS: OpenVMS Alpha
COMPONENT: LIBRTL
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VMS712_LIBRTL-V0100
DEC-AXPVMS-VMS712_LIBRTL-V0100--4.PCSI
ECO Kits Superseded by This ECO Kit: None
ECO Kit Approximate Size: 4176 Blocks
Kit Applies To: OpenVMS Alpha V7.1-2
System/Cluster Reboot Necessary: Yes
Rolling Re-boot Supported: Yes
Installation Rating: INSTALL_3
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:
VMS712_UPDATE-V0300
VMS62TO71U2_PCSI-V0100
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 LIBRTL on OpenVMs Alpha V7.1-2
This kit addresses the following problems:
Problems Addressed In VMS712_LIBRTL-V0100:
o A failure to unwind properly occurs when a large amount of
stack space is being used. This could result in an improperly
handled condition error, or a bad stack notification, or other
error.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
o A synchonization failure occurs for multithread programs using
the DEC C RTL routine malloc and free with "long" pointers (P2
space heap routines). These DEC C RTL routines in turn use
the LIBRTL Routines LIB$VM_MALLOC_64 and LIB$VM_FREE_64.
Symptoms could be varied, including "%LIB-F-MEMALRFRE, memory
already free" errors.
For an application to see this problem it would have to do all
of the following:
- Call the DEC C RTL routines malloc and free
- Be multithreaded
- Be compiled with the/POINTER_SIZE=LONG and
/REENTRANCY=MULTITHREAD switches
- Be linked
/THREADS_ENABLE=(MULTIPLE_KERNEL_THREADS,UPCALLS)
- Be run on a multiprocessor system with kernel threads
enabled.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
o STR$DIVIDE produces incorrect results for certain divisions.
For example:
A: sign = 0, exp = -2, digits = "41291"
B: sign = 0, exp = -6, digits = "787564"
rndtrc = 1, totdig = 2
The incorrect result is:
C: sign = 0, exp = -2, digits = "28147068226765"
The the correct result is:
C: sign = 0, exp = -2, digits = "52429"
Note that STR$DIVIDE is used by the basic RTL and this problem
was initially reported as a problem with the BASIC $QUO
function.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
o STR$DIVIDE will report a memory allocation error if the
TOT_DIGITS parameter is negative.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
o STR$COPY_R may erroneously return STR$_FATINTERR under certain
conditions involving freeing the previous contents of a
dynamic string. This problem may also occur with the routine
LIB$SCOPY_R_DX. These routines are frequently used by other
RTL routines to return string values. Therefore,
STR$_FATINTERR may be returned or signaled by a number of RTL
routines, including the BASIC RTL. The conditions needed for
this to occur are rare.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
o LIB$FIND_VM_ZONE does not show all zones when there are
multiple zones created and the algorithm is VM_FIXED.
Images Affected: [SYSLIB]LIBRTL.EXE
[SYSLIB]LIBRTL_INSTRUMENTED.EXE
INSTALLATION NOTES:
This kit requires a system reboot. Compaq strongly recommends that
a reboot is performed immediately after kit installation to avoid
system instability
If you have other nodes in your OpenVMS cluster, 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.
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 VMS712_LIBRTL /SOURCE=[location of Kit]
The kit location may be a tape drive, CD, or a disk directory that
contains the kit.
Additional help on installing PCSI kits can be found by typing
HELP PRODUCT INSTALL at the system prompt
All trademarks are the property of their respective owners.
This patch can be found at any of these sites:
Colorado Site
Georgia Site
Files on this server are as follows:
dec-axpvms-vms712_librtl-v0100--4.README
dec-axpvms-vms712_librtl-v0100--4.CHKSUM
dec-axpvms-vms712_librtl-v0100--4.pcsi-dcx_axpexe
vms712_librtl-v0100.CVRLET_TXT
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