Memory leak checking doesn't work: SEGV problem while debugging with dbx

I am debugging a program which has memory leaks.
When I do the following:
dbx <program>
(dbx) run <input parameters>
everything runs fine, but as I didn't use RTC leaks checking, this is of no use. Therefore I do the following:
dbx <program>
(dbx) check -memuse
memuse checking - ON
(dbx) check -leaks -frames 8
leaks checking - ON
(dbx) run <input parameters>
which gives the following result:
Running: <program> <input parameters>
(process id 17075)
Reading rtcapihook.so
Reading rtcaudit.so
Reading libmapmalloc.so.1
Reading rtcboot.so
Reading librtc.so
RTC: Enabling Error Checking...
t@1 (l@1) signal SEGV (no mapping at the fault address) in __rtc_memcpy at 0xffffffff7312ed90
0xffffffff7312ed90: __rtc_memcpy+0x0014: st %o4, [%o0 + %o3]
dbx: Stopped within call to '__rtc_suppress_always'. Starting new command interpreter
(dbx) where -l
current thread: t@1
[1] libaio.so.1:_init(0xfffffffe52000058, 0x0, 0xffdfffff, 0xfffffffe52000030, 0x400000, 0x80000), at 0xfffffffe55907a90
[2] ld.so.1[L]:setup(0xffffffff7ffff250, 0x0, 0xffffffff7f72c2b0, 0x10000, 0x0, 0x0), at 0xffffffff7f610ba4
[3] ld.so.1[L]:_setup(0xffffffff7fffffab, 0x1f, 0xffffffff7ffff640, 0xffffffff7fffffbe, 0xffffffff7ffff628, 0xffffffff7f72dde8), at 0xffffffff7f61f24c
[4] ld.so.1[L]:_rt_boot(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xffffffff7f6052d4
I think this means that there is a problem within my 'RTC' libraries.
When I run the "version" command within my dbx session, I get following results:
(dbx) version
Machine hardware: sun4u
OS version: 5.9
Processor type: sparc
Hardware: SUNW,Sun-Fire-480R
The following components are installed on your system:
Sun Studio 9
Sun Studio 9 C Compiler
Sun Studio 9 C++ Compiler
Sun Studio 9 Tools.h++ 7.1
Sun Studio 9 C++ Standard 64-bit Class Library
Sun Studio 9 Garbage Collector
Sun Studio 9 Fortran 95
Sun Studio 9 Debugging Tools (including dbx)
Sun Studio 9 Debugger GUI
Sun Studio 9 Performance Tools (including collect, ...)
Sun Studio 9 X-Designer
Sun Studio 9 VIM editor
Sun Studio 9 XEmacs editor
Sun Studio 9 Native Connector Tool
Sun Studio 9 LockLint
Sun Studio 9 Building Software (including dmake)
Sun Studio 9 Documentation Set
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/cc": Sun C 5.6 2004/07/15
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/CC": Sun C++ 5.6 2004/07/15
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/f90": Sun Fortran 95 8.0 2004/07/15
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/dbx": Sun Dbx Debugger 7.3 2004/07/15
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/analyzer": Sun Performance Analyzer 7.3 2004/07/15
version of "/opt/SUNWspro/bin/../prod/bin/../../bin/dmake": Sun Distributed Make 7.5 2004/07/15
Can anybody help me out?
Which additional information do I need to provide in order to solve this issue?
Message was edited by: B.V. (the "where -l" command has been added
B.V.

Hello Maxim,
As you said, it was worth to try, but unfortunately, it was not a very good investment :-(
The patch 117564-06 has been installed, and I have retried the same procedure, but the same problem occurs.
As you have mentioned in a previous reply, I have flagged the "rtc_error_stack" before launching the "where" command.
The result is the following:
Running: <program> <input parameters>
(process id 21873)
Reading rtcapihook.so
Reading rtcaudit.so
Reading libmapmalloc.so.1
Reading rtcboot.so
Reading librtc.so
RTC: Enabling Error Checking...
t@1 (l@1) signal SEGV (no mapping at the fault address) in __rtc_memcpy at 0xffffffff7312f068
0xffffffff7312f068: __rtc_memcpy+0x0014: st %o4, [%o0 + %o3]
dbx: Stopped within call to '__rtc_suppress_always'. Starting new command interpreter
(dbx) dbxenv rtc_error_stack on
(dbx) where -l
current thread: t@1
=>[1] librtc.so[0xffffffff7de01778]:__rtc_memcpy(0xfffffffe5013fff0, 0xfffffffe50220040, 0x8, 0x
10, 0x803, 0x64a3c338), at 0xffffffff7312f068
[2] librtc.so[0xffffffff7de01778]:change_masks_work(0xfffffffeff90e878, 0xfffffffeff90e878, 0x
803, 0x2, 0x0, 0xffffffff73243608), at 0xffffffff7312e618
---------- called from debugger ----------
[3] libmd5.so.1:_init(0xfffffffe50b00228, 0x0, 0xffdfffff, 0xfffffffe50b00208, 0x400000, 0x800
00), at 0xfffffffe531016e0
[4] ld.so.1[L]:setup(0xffffffff7ffff260, 0x0, 0xffffffff7f72c2b0, 0x10000, 0x0, 0x0), at 0xfff
fffff7f610ba4
[5] ld.so.1[L]:_setup(0xffffffff7fffffa6, 0x1f, 0xffffffff7ffff650, 0xffffffff7fffffb9, 0xffff
ffff7ffff638, 0xffffffff7f72dde8), at 0xffffffff7f61f24c
[6] ld.so.1[L]:_rt_boot(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xffffffff7f6052d4
(dbx)
Any ideas?
Thanks
Dominique

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