is there any probiem if we do malloc and free inside infinite while loop..?

[jagadeesha]

I am observing code is dumping at that point in the load. since we are allocating dynamically memory each time

[donbock]

Nothing wrong with an infinite loop that malloc's some memory, then frees it, then goes back to the top of the loop. If you don't free all the memory then you have a "memory leak" -- that is a problem regardless of whether you have an infinite loop.

A core dump indicates a serious problem. Are you trapping the malloc error return (ie, when it returns NULL)?

[jagadeesha]

i m not trapping... how to trap..?

[Banfa]

With an if statement, test the return value of malloc.

[donbock]

@jagadeesha

foo_t *ptr;
ptr = malloc(sizeof(foo_t));
if (ptr == NULL) {
    printf("malloc failed!\n");
    exit(1);
    }

Replace the printf/exit with whatever you think is an appropriate action to take when malloc fails.