Re: RE: rootcint segmentation fault with SL3/gcc 3.2.3

From: Rene Brun <Rene.Brun_at_cern.ch>
Date: Wed, 18 Apr 2007 11:12:01 +0200


Hi Nick,

Apologies for the delay to process this problem (post-workshop synchronization problem).
I expect that Paul/Philippe will process this problem as soon as they are back online and they will let
you know.

Rene

Nick West wrote:
> Hi Roottalk,
>
> Any progress with this?
>
> Cheers,
>
> Nick West.
>
>
>> -----Original Message-----
>> From: Nick West
>> Sent: 04 April 2007 11:20
>> To: 'roottalk_at_root.cern.ch'
>> Subject: rootcint segmentation fault with SL3/gcc 3.2.3
>>
>> Hi Roottalk,
>>
>> Running on
>>
>> Scientific Linux SL release 3.0.8 with gcc version 3.2.3
>>
>> I am having trouble building a particularly dictionary with
>> rootcint versions 5.15.04 and beyond. The command:-
>>
>> rootcint -f NueMatrixHelperDict.cc -c NueMatrixHelper.h LinkDef.h
>>
>> gives a segmentation fault. I have isolated the problem to the code:-
>>
>> const float k_std_dis_res[2][2][4] = {
>> /* v+p v+n vb+p vb+n */
>> {{0.20, 0.20, 0.200, 0.20},{1.000, 1.000, 1.000, 1.000}}, // cc
>> {{0.20, 0.20, 0.200, 0.20},{1.000, 1.000, 1.000, 1.000}} // nc
>> /* multiplicity = 2 */ /* multiplicity = 3 */
>> };
>>
>> The stack dump looks like this:-
>>
>> #0 0x001ddb01 in G__initary (new_name=0xbffeb1b0
>> "k_std_dis_res[2][2][4]") at cint/src/v6_decl.cxx:2781
>> 2781 inc *= var->varlabel[varid][pi--];
>> (gdb) info stack
>> #0 0x001ddb01 in G__initary (new_name=0xbffeb1b0
>> "k_std_dis_res[2][2][4]") at cint/src/v6_decl.cxx:2781
>> #1 0x001dc7c4 in G__define_var (tagnum=-1, typenum=-1) at
>> cint/src/v6_decl.cxx:2389
>> #2 0x00259685 in G__exec_statement () at cint/src/v6_parse.cxx:3603
>> #3 0x0022cea1 in G__loadfile (filenamein=0xbffefd10
>> "NueMatrixHelper.h") at cint/src/v6_loadfile.cxx:2013
>> #4 0x00226398 in G__main (argc=23, argv=0xbfff8b20) at
>> cint/src/v6_init.cxx:1270
>> #5 0x08068361 in main (argc=6, argv=0xbfff9e24) at
>> utils/src/rootcint.cxx:4475
>>
>> and looking at the source line:-
>>
>> inc *= var->varlabel[varid][pi--];
>>
>> the problem is:-
>>
>> print varid
>> $3 = 0
>> print pi
>> $4 = 166049132 <=========== !!
>>
>> The problem goes away if I switch to
>>
>> Scientific Linux SL release 4.4 with gcc version 3.4.6
>>
>> or retreat to ROOT version 5.15.02, but neither is an option for me.
>>
>> I attach the two files NueMatrixHelper.h LinkDef.h that
>> illustrate the problem.
>>
>> Thanks,
>>
>> Nick West
>>
>>
Received on Wed Apr 18 2007 - 11:12:08 CEST

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