gsl

[Rick Stevens]

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.

>>> Sent: Wednesday, June 03, 2015 at 11:33 PM
>>> From: "Rick Stevens" <ricks at alldigital.com>
>>> To: "Community support for Fedora users" <users at 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 at alldigital.com -
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>
>


-- 
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- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
- AIM/Skype: therps2        ICQ: 226437340           Yahoo: origrps2 -
-                                                                    -
-                  Heisenberg _may_ have slept here                  -
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