Problems printing variables in sparc-rtems4.11-gdb 7.6

[Daniel Hellstrom]

Hi,

Have you seen a fix or update on this issue?

Regards,
Daniel

On 05/29/2013 07:30 PM, Jiri Gaisler wrote:
>
> On 05/29/2013 01:42 PM, Ralf Kirchner wrote:
>> Hi All,
>> I noticed a strange problem with gdb version 7.6 (our current RPM version)
>> Printing variables in in gdb is not possible.
> I have the same problem on both gdb-7.5 and 7.6 (ubuntu 12.04 x64).
> Some variables print OK, some get the 'can't compute CFA' error.
> Gdb version 7.4 and earlier cannot read the symbol table at all, probably
> due to unsupported dwarf version 4 produced by sparc-rtems4.11-gcc (gcc-4.8).
> Most annoying ....
>
>
> Jiri.
>
>> Scenario:
>> rk at linux-aiv4:~/git-rtems-testing/rtems/build-sparc-sis-rtems/sparc-rtems4.11/c/sis/testsuites/fstests/fsdosfsname01
>>> sparc-rtems4.11-gdb *.exe
>> GNU gdb (GDB) 7.6
>> Copyright (C) 2013 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later
>> <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "--host=x86_64-suse-linux-gnu
>> --target=sparc-rtems4.11".
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>...
>> Reading symbols from
>> /scratch/git-rtems-testing/rtems/build-sparc-sis-rtems/sparc-rtems4.11/c/sis/testsuites/fstests/fsdosfsname01/fsdosfsname01.exe...done.
>> (gdb) tar sim
>> Connected to the simulator.
>> (gdb) load
>> (gdb) break Init
>> Breakpoint 1 at 0x2004338: file
>> ../../../../../../../git-rtems/c/src/../../testsuites/fstests/fsdosfsname01/init.c,
>> line 1295.
>> (gdb) run
>> Starting program:
>> /scratch/git-rtems-testing/rtems/build-sparc-sis-rtems/sparc-rtems4.11/c/sis/testsuites/fstests/fsdosfsname01/fsdosfsname01.exe
>>
>>
>> Breakpoint 1, Init (arg=<error reading variable: can't compute CFA for
>> this frame>) at
>> ../../../../../../../git-rtems/c/src/../../testsuites/fstests/fsdosfsname01/init.c:1295
>> 1295	  puts( "\n\n*** TEST fsdosfsname01 ***" );
>> (gdb) p arg
>> can't compute CFA for this frame
>> (gdb)
>>
>> Has anybody else seen such problems with gdb 7.6?
>> Am I doing anything wrong? Does version 7.6 need any special treatment
>> to work correctly?
>>
>> Kind Regards
>> 	Ralf Kirchner
>>
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