function pointer is not initializing to NULL

[sharathyd]

Hi Andrew,

 I'm not able to give that program because its huge. But i'm sure its
failing at this point. I'm also trying to recreate this problem by small
program but I couldn't! Here is some test cases...

 Compiled ----
 With debug flag (ie in debug mode) == its working 
 without debug flag and not initialization to NULL == its working
 without debug flag and initialization to NULL == its not working.
 
 I'm suspecting some runtime environment issue or optimization problem , Is
there gcc flag to suppress this!?

Thanks & Regards,
 Sharath.
 
 

Andrew Haley wrote:
> 
> sharathyd wrote:
>> Hi,
>> 
>> I'm using AIX 5.1 and gcc 4.0 version to build my software. Here I'm
>> finding
>> some problem in runtime.
>> Here we have static function pointer that is initialized to NULL. Here is
>> the below cases...
>> 
>> static int (*retrivalFunc)(char *attr, char *option, returnCode *codePtr,
>> char *buf) = NULL;
>> 
>> sampleFunc() {
>> 
>> if (attRetrivalfunc != NULL) {
>> return(retrivalFunc(attName, dataBuf,codePtr, msg));
>> }
>> }
>> 
>> Here at run time for the first only directly its coming to this if loop
>> (ie.
>> !=NULL case), and causing problem.
>> But if I remove the NULL initialization, its working fine. I think
>> 'static'
>> will initialize. But why this is not initializing if I explicitly do? Is
>> this problem with AIX environment or gcc? Thanks for any suggestion!
> 
> It's hard to tell because you haven't really given us enough information.
> 
> Can you produce a test case (a complete, compilable and runnable program)
> that demonstrates this problem?
> 
> Andrew.
> 
> 

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