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From "Martin Sebor (JIRA)" <j...@apache.org>
Subject [jira] Commented: (STDCXX-273) [Sun C++ 5.8/Solaris 10] RUA in strchr()
Date Wed, 16 Aug 2006 14:46:14 GMT
    [ http://issues.apache.org/jira/browse/STDCXX-273?page=comments#action_12428407 ] 
            
Martin Sebor commented on STDCXX-273:
-------------------------------------

-------- Original Message --------
Subject: Re: (Incident Review ID: 770083) RUA in strchr()
Date: Wed, 16 Aug 2006 03:14:02 -0600 (MDT)
From: Sun Microsystems <IncidentUpdateDaemon@sun.com>
To: sebor@roguewave.com

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Hi Martin Sebor,

Please install dbx patch 121023-02. Solaris 10 string functions problems should go away with
this new patch. You can read more about this patch in the blog (http://blogs.sun.com/roller/page/dbx?entry=latest_updates_to_run_time)
and in CR 6372403.

Regards,
Rose

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--------------- Previous Messages ----------------

----------------------------------------------------
2006-08-14 12:29:48.238   UPDATE RECEIVED FROM CUSTOMER
----------------------------------------------------

Sun Microsystems wrote:

The 2 interrupts is a separate problem that I haven't reported
yet. Our dbx hangs after reading the last .so (in a call to
write on a descriptor trying to write the debuggee) and must
be interrupted.  Some of the truss output relevant to the
descriptor is below.

I'm using dbx 7.5 and Sun C 5.8 on a Solaris 10/SPARC box:

$ dbx -V
Sun Dbx Debugger 7.5 Patch 121023-01 2006/02/09
...
$ cc -V
cc: Sun C 5.8 Patch 121015-02 2006/03/29
...
$ uname -a
SunOS doc 5.10 Generic_118822-19 sun4u sparc SUNW,Ultra-Enterprise

Martin

The (abbreviated) truss output follows:

[...]
open("/proc/21792/ctl", O_WRONLY)		= 8
fcntl(8, F_SETFD, 0x00000001)			= 0
[...]
write(8, 0x100691470, 32)	(sleeping...)
     Received signal #2, SIGINT, in write() [caught]
write(8, "\0\0\0\0\0\0\010\0\0\0\0".., 32)	= 32
lwp_sigmask(SIG_SETMASK, 0x00000002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
setcontext(0xFFFFFFFF7FFFE960)
lwp_sigmask(SIG_SETMASK, 0x00020000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
sigaction(SIGCLD, 0x00000000, 0xFFFFFFFF7FFFF3F0) = 0
close(7)					= 0
close(9)					= 0
close(11)					= 0
close(-1)					Err#9 EBADF
close(12)					= 0
close(-1)					Err#9 EBADF
close(-1)					Err#9 EBADF
close(-1)					Err#9 EBADF
close(-1)					Err#9 EBADF
close(8)					= 0
     Received signal #2, SIGINT, in waitid() [caught]
waitid(P_PID, 21792, 0xFFFFFFFF7FFFF170, WEXITED|WTRAPPED|WSTOPPED) 
Err#4 EINTR
lwp_sigmask(SIG_SETMASK, 0x00020002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
write(1, " h a v e   s e e n   2  ".., 23)	= 23
setcontext(0xFFFFFFFF7FFFE910)
write(2, " d b x :   w a r n i n g".., 71)	= 71
sigaction(SIGCLD, 0xFFFFFFFF7FFFF2E0, 0x00000000) = 0
sigaction(SIGCLD, 0xFFFFFFFF7FFFF2E0, 0x00000000) = 0
write(2, " d b x :   d b x   i n t".., 22)	= 22
[...]

> 
----------------------------------------------------
2006-08-13 23:17:25.234   EMAIL SENT BY Rose
----------------------------------------------------

From: Rose Lee
To: sebor@roguewave.com
Subject: Re: (Incident Review ID: 770083) RUA in strchr()
X-IM-Review-ID: 

Hi Martin Sebor,

I was not able to reproduce your problem. 
First, I didn't get the 2 warnings at the end:
==
ACTUAL -
For information about new features see `help changes'
  To remove this message, put `dbxenv suppress_startup_message 7.5' in your .dbxrc
Reading a.out
Reading ld.so.1
Reading libc.so.1
^C^Chave seen 2 interrupts
dbx: warning: wait for process 7692 failed -- Interrupted system call
dbx: dbx interrupted!
==

Secondly, I did get a clean run(with no failed messages like below)
==
dbx: internal warning: td_ta_clear_event() failed -- debugger service failed
dbx: internal warning: td_ta_sync_tracking_enable(0) failed -- bad thread agent
==

Can you please provide more information:
- The output of 'dbx -V'( I am using Sun Dbx Debugger 7.5 2005/10/13)
- I tried it on Solaris 10 sun4u sparc machine, are you using the same O/S and architecture?

Regards,
Rose

> [Sun C++ 5.8/Solaris 10] RUA in strchr()
> ----------------------------------------
>
>                 Key: STDCXX-273
>                 URL: http://issues.apache.org/jira/browse/STDCXX-273
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: External
>         Environment: Sun C++ on Solaris 10
>            Reporter: Martin Sebor
>            Priority: Critical
>
> -------- Original Message --------
> Subject: Your Report (Review ID: 770083) - RUA in strchr()
> Date: Fri, 11 Aug 2006 18:05:33 -0600 (MDT)
> From: IncidentDaemon@sun.com <IncidentDaemon@sun.com>
> To: sebor@roguewave.com
> Dear Sun Studio Developer,
> Thank you for your interest in improving the quality of Sun Studio 
> product.
> Your report has been assigned an internal review ID of  770083.
> Please be aware that the large volume of reports we receive sometimes 
> prevents us from responding individually to each message.
> If the information is determined to be a new Bug or Request for 
> Enhancement (RFE), or a duplicate of a known Bug or RFE, you will 
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> Regards,
> Sun Studio Developer Bug Report Review Team
> ---------------------------------------------------------------
> Date Created: Fri Aug 11 18:05:31 MDT 2006
> Type:        bug
> Customer Name:   Martin Sebor
> Customer Email:  sebor@roguewave.com
> SDN ID:       sebor
> status:      Waiting
> Category:    c
> Subcategory: compiler
> Company:     Rogue Wave Software
> release:     studio11
> hardware:    sun4
> OSversion:   solaris_10
> priority:    4
> Synopsis:    RUA in strchr()
> Description:
>  FULL PRODUCT VERSION :
> N/A
> ADDITIONAL OS VERSION INFORMATION :
> Solaris 10
> A DESCRIPTION OF THE PROBLEM :
> dbx reports a RUA in strchr().
> STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
> $ cat t.c && cc -g t.c && dbx a.out
> EXPECTED VERSUS ACTUAL BEHAVIOR :
> EXPECTED -
> Clean run.
> ACTUAL -
> For information about new features see `help changes'
>   To remove this message, put `dbxenv suppress_startup_message 7.5' in your .dbxrc
> Reading a.out
> Reading ld.so.1
> Reading libc.so.1
> ^C^Chave seen 2 interrupts
> dbx: warning: wait for process 7692 failed -- Interrupted system call
> dbx: dbx interrupted!
> (dbx) check -access
> access checking - ON
> (dbx) run
> dbx: internal warning: td_ta_clear_event() failed -- debugger service failed
> dbx: internal warning: td_ta_sync_tracking_enable(0) failed -- bad thread agent
> Running: a.out
> (process id 7736)
> Reading rtcapihook.so
> Reading libdl.so.1
> Reading rtcaudit.so
> Reading libmapmalloc.so.1
> Reading libgen.so.1
> Reading libm.so.2
> Reading libc_psr.so.1
> Reading rtcboot.so
> Reading librtc.so
> RTC: Enabling Error Checking...
> RTC: Running program...
> Read from unallocated (rua):
> Attempting to read 2 bytes at address 0x10c26
> stopped in strchr at 0xebd304cc
> 0xebd304cc: strchr+0x008c:      ba,a     0xeb948d44     ! 0xeb948d44
> Current function is main
>     5       strchr ("NULL=", 61);
> ERROR MESSAGES/STACK TRACES THAT OCCUR :
> Read from unallocated (rua):
> Attempting to read 2 bytes at address 0x10c26
> stopped in strchr at 0xebd304cc
> 0xebd304cc: strchr+0x008c:      ba,a     0xeb948d44     ! 0xeb948d44
> Current function is main
>     5       strchr ("NULL=", 61);
> REPRODUCIBILITY :
> This bug can be reproduced always.
> ---------- BEGIN SOURCE ----------
> #include <string.h>
> int main ()
> {
>     strchr ("NULL=", 61);
> }
> ---------- END SOURCE ----------
> workaround:  
> comments:    (company - Rogue Wave Software , email - sebor@roguewave.com)

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