[sane-devel] Programming getting a SIGSEGV

[m. allan noah]

try running it under gdb and take a backtrace?

allan

On Mon, 20 Jun 2005, Mohit Kumar wrote:

> Sorry for the confusion Allan. But no its not the case. Rather it is
> the following:
>
>   else
>   {
>             //now for color
>    }
>    j++;
>
> Thanks,
> Mohit
>
> On 6/20/05, m. allan noah <anoah@pfeiffer.edu> wrote:
>>
>> mohit, perhaps you mean
>>
>> else {
>>            //now for color
>>
>>            j++;
>> }
>>
>> note the braces.
>>
>> allan
>>
>> On Mon, 20 Jun 2005, Mohit Kumar wrote:
>>
>>> Hi All,
>>>
>>> I have the following piece of code: (kindly ignore the declarations..)
>>>
>>> options = sane_get_option_descriptor(handle, index); //index points to
>>> mode option
>>> int j=0;
>>> if(options!=NULL)
>>> {
>>>     while(options->constraint.string_list[j])
>>>    {
>>>           if(strcmp(options->constraint.string_list[j] == "Grayscale"
>>>           {
>>>                 SANE_Status status =
>>> sane_control_option(handle,index,SANE_ACTION_SET_VALUE,(SANE_String*)"Grayscale",0);
>>>                .
>>>                .
>>>                .
>>>                .
>>>           }
>>>           else
>>>           //now for color
>>>
>>>           j++;
>>>    }
>>> }
>>>
>>> Now j=0 return Lineart, j=1 returns Halftone, j=2 returns Grayscale.
>>> But for j=3 (it should have returned "Color"), program crashes and it
>>> says cannot access memory at address 0x25.
>>>
>>> I have a HP ScanJet 6200C/6250C and I have verified it has all the four modes.
>>>
>>> Am i doing something wrong? I cannot understand why the fourth value
>>> is giving me problems while the first three have gone correct?
>>>
>>> Thanks,
>>> Mohit
>>>
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>>
>> --
>> "so don't tell us it can't be done, putting down what you don't know.
>> money isn't our god, integrity will free our souls" - Max Cavalera
>>
>

-- 
"so don't tell us it can't be done, putting down what you don't know.
money isn't our god, integrity will free our souls" - Max Cavalera