Re: gsl
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Patrick DUPRÉ | | email: pdupre(a)gmx.com
Laboratoire de Physico-Chimie de l'Atmosphère | |
Université du Littoral-Côte d'Opale | |
Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
189A, avenue Maurice Schumann | | 59140 Dunkerque, France
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Sent: Thursday, June 04, 2015 at 1:00 AM
From: "Rick Stevens" <ricks(a)alldigital.com>
To: "Community support for Fedora users" <users(a)lists.fedoraproject.org>
Subject: Re: gsl
On 06/03/2015 03:53 PM, Rick Stevens wrote:
> On 06/03/2015 03:19 PM, Patrick Dupre wrote:
>> Execution:
>> Segmentation fault (core dumped)
>>
>> it is linked with gsl and math library.
>> I guess that there is an issue either with the c code or with the binary
>> library.
>
> Well, looking at the code, you're passing "T_", which is
uninitialized.
> Not knowing the API for gsl_multifit_fsolver_alloc(), I have no idea
> what params it's expecting, but that's a pretty good one to start
> looking at.
In fact, there's two possibilities...passing in an uninitialized pointer
is suspect, and if the function is supposed to fill in whatever that's
pointing at with a value is also a problem as you've declared it as a
"const", meaning you can't assign data to it at run time.
That is right.
I tried to not set it const, but it is the same result.
I tried to have a look in the code, but I did not understand what is going on.
I did not find any example.
Actually, I made similar things to that is proposed for
gsl_multifit_fdfsolver
which do not suffer from this allocation issue.
Who is in charge of this package?
Thank.
>>> Sent: Wednesday, June 03, 2015 at 11:33 PM
>>> From: "Rick Stevens" <ricks(a)alldigital.com>
>>> To: "Community support for Fedora users"
<users(a)lists.fedoraproject.org>
>>> Subject: Re: gsl
>>>
>>> On 06/03/2015 02:23 PM, Patrick Dupre wrote:
>>>> Hello,
>>>>
>>>> Can somebody help me?
>>>>
>>>> This short piece of code fails.
>>>> It seems to be due to the gsl library!
>>>>
>>>> Thank for your help.
>>>>
>>>> #include <gsl/gsl_multifit_nlin.h>
>>>>
>>>> int main () {
>>>> const gsl_multifit_fsolver_type *T_ ;
>>>> gsl_multifit_fsolver *s_ = gsl_multifit_fsolver_alloc (T_, 10, 1);
>>>> }
>>>
>>> What's failing? Compile? Link? Execution?
>>> ----------------------------------------------------------------------
>>> - Rick Stevens, Systems Engineer, AllDigital ricks(a)alldigital.com -
>>> - AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
>>> - -
>>> - If Bill Gates got a dime for every time Windows crashes... -
>>> - ...oh, wait. He does. THAT explains it! -
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>
>
--
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- Rick Stevens, Systems Engineer, AllDigital ricks(a)alldigital.com -
- AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
- -
- Heisenberg _may_ have slept here -
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