[Bug c++/11134] New: DWARF Problems with const int globals

[Bug c++/11134] New: DWARF Problems with const int globals

[drkent@lanl.gov]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134

           Summary: DWARF Problems with const int globals
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: drkent@lanl.gov
                CC: gcc-bugs@gcc.gnu.org

I am developing a dynamic instrumentation tool that uses DWARF and have
encountered a few problems that could be from the dwarf information generated by
g++  3.3.

There are a few global variables defined as "const int".  When the tool parses
the binary, it attempts to locate these variables and then gives a
DW_DLV_NO_ENTRY error which means that the attribute is not where the dwarf
information says it is.

I have avoided these problems by changing the global const ints to #define
statments, and the code runs properly.

Please contact me with any questions.

[Bug c++/11134] DWARF Problems with const int globals

[drow@mvista.com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From drow@mvista.com  2003-06-09 14:21 -------
Subject: Re:  New: DWARF Problems with const int globals

This isn't really an answer to your bug report, but it counts as a
workaround...

On Mon, Jun 09, 2003 at 02:15:57PM -0000, drkent@lanl.gov wrote:
> PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> 
>            Summary: DWARF Problems with const int globals
>            Product: gcc
>            Version: 3.3
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: P2
>          Component: c++
>         AssignedTo: unassigned@gcc.gnu.org
>         ReportedBy: drkent@lanl.gov
>                 CC: gcc-bugs@gcc.gnu.org
> 
> I am developing a dynamic instrumentation tool that uses DWARF and have
> encountered a few problems that could be from the dwarf information generated by
> g++  3.3.
> 
> There are a few global variables defined as "const int".  When the tool parses
> the binary, it attempts to locate these variables and then gives a
> DW_DLV_NO_ENTRY error which means that the attribute is not where the dwarf
> information says it is.
> 
> I have avoided these problems by changing the global const ints to #define
> statments, and the code runs properly.
> 
> Please contact me with any questions.

If you are developing this tool, please, please, please use DWARF-2
instead!  The DWARF writer is on its last legs, especially in C++, and
the format is inferior.

[Bug c++/11134] DWARF Problems with const int globals

[dberlin@dberlin.org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From dberlin@dberlin.org  2003-06-09 14:29 -------
Subject: Re:  DWARF Problems with const int globals

He *must* be referring to DWARF2 already.
DW_DLV_NO_ENTRY is an error value returned by the libdwarf dwarf2 library
SGI wrote (and Intel rewrote, and Ulrich Drepper is writing for elfutils).


On Mon, 9 Jun 2003, drow@mvista.com wrote:

> PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
>
>
>
> ------- Additional Comments From drow@mvista.com  2003-06-09 14:21 -------
> Subject: Re:  New: DWARF Problems with const int globals
>
> This isn't really an answer to your bug report, but it counts as a
> workaround...
>
> On Mon, Jun 09, 2003 at 02:15:57PM -0000, drkent@lanl.gov wrote:
> > PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> >
> > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> >
> >            Summary: DWARF Problems with const int globals
> >            Product: gcc
> >            Version: 3.3
> >             Status: UNCONFIRMED
> >           Severity: normal
> >           Priority: P2
> >          Component: c++
> >         AssignedTo: unassigned@gcc.gnu.org
> >         ReportedBy: drkent@lanl.gov
> >                 CC: gcc-bugs@gcc.gnu.org
> >
> > I am developing a dynamic instrumentation tool that uses DWARF and have
> > encountered a few problems that could be from the dwarf information generated by
> > g++  3.3.
> >
> > There are a few global variables defined as "const int".  When the tool parses
> > the binary, it attempts to locate these variables and then gives a
> > DW_DLV_NO_ENTRY error which means that the attribute is not where the dwarf
> > information says it is.
> >
> > I have avoided these problems by changing the global const ints to #define
> > statments, and the code runs properly.
> >
> > Please contact me with any questions.
>
> If you are developing this tool, please, please, please use DWARF-2
> instead!  The DWARF writer is on its last legs, especially in C++, and
> the format is inferior.
>

[Bug c++/11134] DWARF Problems with const int globals

[drow@mvista.com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From drow@mvista.com  2003-06-09 14:38 -------
Subject: Re:  DWARF Problems with const int globals

Oh, thanks.  I'm not familiar with that library's API... it's on this
drive somewhere...

In that case, will the submitter please provide a testcase?  Does
readelf show anything that looks wrong?  It might be a bug in
libdwarf...

On Mon, Jun 09, 2003 at 02:29:02PM -0000, dberlin@dberlin.org wrote:
> ------- Additional Comments From dberlin@dberlin.org  2003-06-09 14:29 -------
> Subject: Re:  DWARF Problems with const int globals
> 
> He *must* be referring to DWARF2 already.
> DW_DLV_NO_ENTRY is an error value returned by the libdwarf dwarf2 library
> SGI wrote (and Intel rewrote, and Ulrich Drepper is writing for elfutils).
> 
> 
> On Mon, 9 Jun 2003, drow@mvista.com wrote:
> 
> > PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> >
> > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> >
> >
> >
> > ------- Additional Comments From drow@mvista.com  2003-06-09 14:21 -------
> > Subject: Re:  New: DWARF Problems with const int globals
> >
> > This isn't really an answer to your bug report, but it counts as a
> > workaround...
> >
> > On Mon, Jun 09, 2003 at 02:15:57PM -0000, drkent@lanl.gov wrote:
> > > PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> > >
> > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> > >
> > >            Summary: DWARF Problems with const int globals
> > >            Product: gcc
> > >            Version: 3.3
> > >             Status: UNCONFIRMED
> > >           Severity: normal
> > >           Priority: P2
> > >          Component: c++
> > >         AssignedTo: unassigned@gcc.gnu.org
> > >         ReportedBy: drkent@lanl.gov
> > >                 CC: gcc-bugs@gcc.gnu.org
> > >
> > > I am developing a dynamic instrumentation tool that uses DWARF and have
> > > encountered a few problems that could be from the dwarf information generated by
> > > g++  3.3.
> > >
> > > There are a few global variables defined as "const int".  When the tool parses
> > > the binary, it attempts to locate these variables and then gives a
> > > DW_DLV_NO_ENTRY error which means that the attribute is not where the dwarf
> > > information says it is.
> > >
> > > I have avoided these problems by changing the global const ints to #define
> > > statments, and the code runs properly.
> > >
> > > Please contact me with any questions.
> >
> > If you are developing this tool, please, please, please use DWARF-2
> > instead!  The DWARF writer is on its last legs, especially in C++, and
> > the format is inferior.
> >
>

[Bug c++/11134] DWARF Problems with const int globals

[drkent@lanl.gov]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From drkent@lanl.gov  2003-06-09 18:32 -------

These are problems with DWARF-2 not the original DWARF.

[Bug c++/11134] DWARF Problems with const int globals

[drkent@lanl.gov]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From drkent@lanl.gov  2003-06-09 18:33 -------
Subject: Re:  DWARF Problems with const int globals


> If you are developing this tool, please, please, please use DWARF-2
> instead!  The DWARF writer is on its last legs, especially in C++, and
> the format is inferior.

Oops...  I was unclear.  It is DWARF-2 that I'm using.

chip

[Bug c++/11134] DWARF-2/3 Problems with const int globals

[pinskia@physics.uc.edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|DWARF Problems with const   |DWARF-2/3 Problems with
                   |int globals                 |const int globals


------- Additional Comments From pinskia@physics.uc.edu  2003-06-09 18:33 -------
Changing title so noone makes the same mistake twice.

[Bug c++/11134] DWARF-2/3 Problems with const int globals

[drkent at lanl dot gov]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134



------- Additional Comments From drkent at lanl dot gov  2003-06-18 14:57 -------
Subject: Re:  DWARF Problems with const int globals

I'm under too much of a time crunch to submit a very small test case.  I 
could only provide a large, unstable, difficult to install program which 
probably wouldn't be much help.

Chip


On Mon, Jun 09, 2003 at 02:38:13PM -0000, drow@mvista.com wrote:
> PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> 
> 
> 
> ------- Additional Comments From drow@mvista.com  2003-06-09 14:38 -------
> Subject: Re:  DWARF Problems with const int globals
> 
> Oh, thanks.  I'm not familiar with that library's API... it's on this
> drive somewhere...
> 
> In that case, will the submitter please provide a testcase?  Does
> readelf show anything that looks wrong?  It might be a bug in
> libdwarf...
> 
> On Mon, Jun 09, 2003 at 02:29:02PM -0000, dberlin@dberlin.org wrote:
> > ------- Additional Comments From dberlin@dberlin.org  2003-06-09 14:29 -------
> > Subject: Re:  DWARF Problems with const int globals
> > 
> > He *must* be referring to DWARF2 already.
> > DW_DLV_NO_ENTRY is an error value returned by the libdwarf dwarf2 library
> > SGI wrote (and Intel rewrote, and Ulrich Drepper is writing for elfutils).
> > 
> > 
> > On Mon, 9 Jun 2003, drow@mvista.com wrote:
> > 
> > > PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> > >
> > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> > >
> > >
> > >
> > > ------- Additional Comments From drow@mvista.com  2003-06-09 14:21 -------
> > > Subject: Re:  New: DWARF Problems with const int globals
> > >
> > > This isn't really an answer to your bug report, but it counts as a
> > > workaround...
> > >
> > > On Mon, Jun 09, 2003 at 02:15:57PM -0000, drkent@lanl.gov wrote:
> > > > PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> > > >
> > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> > > >
> > > >            Summary: DWARF Problems with const int globals
> > > >            Product: gcc
> > > >            Version: 3.3
> > > >             Status: UNCONFIRMED
> > > >           Severity: normal
> > > >           Priority: P2
> > > >          Component: c++
> > > >         AssignedTo: unassigned@gcc.gnu.org
> > > >         ReportedBy: drkent@lanl.gov
> > > >                 CC: gcc-bugs@gcc.gnu.org
> > > >
> > > > I am developing a dynamic instrumentation tool that uses DWARF and have
> > > > encountered a few problems that could be from the dwarf information generated by
> > > > g++  3.3.
> > > >
> > > > There are a few global variables defined as "const int".  When the tool parses
> > > > the binary, it attempts to locate these variables and then gives a
> > > > DW_DLV_NO_ENTRY error which means that the attribute is not where the dwarf
> > > > information says it is.
> > > >
> > > > I have avoided these problems by changing the global const ints to #define
> > > > statments, and the code runs properly.
> > > >
> > > > Please contact me with any questions.
> > >
> > > If you are developing this tool, please, please, please use DWARF-2
> > > instead!  The DWARF writer is on its last legs, especially in C++, and
> > > the format is inferior.
> > >
> > 
> 
> 
> 
> 
> 
> ------- You are receiving this mail because: -------
> You reported the bug, or are watching the reporter.

-- 


-----------------------------------------------------
David R. "Chip" Kent IV

Parallel Tools Team
High Performance Computing Environments Group (CCN-8)
Los Alamos National Laboratory

(505)665-5021
drkent@lanl.gov
-----------------------------------------------------

[Bug c++/11134] DWARF-2/3 Problems with const int globals

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---

[Bug debug/11134] DWARF-2/3 Problems with const int globals

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |debug


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134

[Bug debug/11134] DWARF-2/3 Problems with const int globals

[dhazeghi at yahoo dot com]

------- Additional Comments From dhazeghi at yahoo dot com  2004-01-17 23:37 -------
Daniel, do you know of any problems like this, or should we just close this report, since there's not 
testcase? Thanks.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |drow at mvista dot com
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134

[Bug debug/11134] DWARF-2/3 Problems with const int globals

[drkent at lanl dot gov]

------- Additional Comments From drkent at lanl dot gov  2004-01-20 14:09 -------
Subject: Re:  DWARF-2/3 Problems with const int globals

I don't have time to generate a test case because I have a work around.  
If it is waiting on me, just close it.

Chip


On Sat, Jan 17, 2004 at 11:37:23PM -0000, dhazeghi at yahoo dot com wrote:
> 
> ------- Additional Comments From dhazeghi at yahoo dot com  2004-01-17 23:37 -------
> Daniel, do you know of any problems like this, or should we just close this report, since there's not 
> testcase? Thanks.
> 
> -- 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |drow at mvista dot com
>              Status|UNCONFIRMED                 |WAITING
> 
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134
> 
> ------- You are receiving this mail because: -------
> You reported the bug, or are watching the reporter.

-- 


-----------------------------------------------------
David R. "Chip" Kent IV

Parallel Tools Team
High Performance Computing Environments Group (CCN-8)
Los Alamos National Laboratory

(505)665-5021
drkent@lanl.gov
-----------------------------------------------------


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134

[Bug debug/11134] DWARF-2/3 Problems with const int globals

[dhazeghi at yahoo dot com]

------- Additional Comments From dhazeghi at yahoo dot com  2004-01-20 16:18 -------
I figured that Daniel (being one of our debug specialists) would probably know about problems in 
this area. But fair enough, we can close this, and if it comes up again (or Daniel confirms it is still a 
problem), it can be reopened.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134

[Bug debug/11134] DWARF-2/3 Problems with const int globals

[drow at gcc dot gnu dot org]

------- Additional Comments From drow at gcc dot gnu dot org  2004-01-23 20:15 -------
I just checked the output for g++ and gcc, and didn't see anything
wrong with it; and GDB copes just fine.  So I think, no bug.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11134