OpenMP omp_get_schedule() segmentation fault

[ramako]

So basically this is what I am doing:

omp_sched_t *kind;
int *modifier;
omp_get_schedule(kind,modifier);

and I am getting segmentation fault. Compiled with -fopenmp flag

any ideas??

[j3Rz8vqX]

Problem is likely elsewhere...

segmentation fault, confirms that you have gone out of bounds somewhere.

Check your loops.

Look at the indexes and the flow/behavior of the index value.

Good luck.

[ramako]

I have isolated the problem in those three lines, in a new program containing the main ,defines and those 3 lines. commenting the function wont lead to segfault.
thanks for ur answer:)

[cire]

So basically this is what I am doing:

omp_sched_t *kind;
int *modifier;
omp_get_schedule(kind,modifier);

So, basically you're feeding omp_get_schedule junk and wondering why it doesn't work? Neither kind nor modifier contain valid memory addresses, so when they're dereferenced in omp_get_schedule bad things happen.

[ramako]

I am guessing I need 2 malloc?

omp_sched_t *kind =malloc(sizeof(omp_sched_t));
int *modifier = malloc(sizeof (int));

It has been some time since I played with C, I thought declaring as a pointer was enough to have memory booked.

Thanks, I will try and if it works I'll mark it as solved ;)

[cire]

I am guessing I need 2 malloc?

That's one way to do things, but not really recommended.

    omp_sched_t schedule_type ;
    int chunk_size ;
    omp_get_schedule(&schedule_type, &chunk_size);