Seg fault trying to dereference a void pointer in a structure?

[superbbrr]

Hi, I must be doing something wrong.

p_stat_t structure has members such as

uint32_t sys_counter
uint8_t cpu_usage


How can I print sys_counter in the function below?

void(*)handleCurrentStatus( p_handle dh, p_time_t tm, const p_stat_t * statusInfo, void * arg )
{
    printf( "Got status at %u\n", tm.sec );    
    printf( "System config is %u\n", *(int*)statusInfo->sys_counter );    
}

It compiles but seg faults. Argg..


Thanks!

[laserlight]

It looks like you just want:

printf("System config is %u\n", statusInfo->sys_counter);

[Salem]

> How can I print sys_counter in the function below?
Well you could

> printf( "System config is %u\n", *(int*)statusInfo->sys_counter );
a) put a breakpoint on this line, then examine sys_counter to see if it looks like a valid pointer
b) just look at the code and wonder whether all that casting of random integers to a pointer, then dereferencing it makes any sense to you at all.

[iMalc]

For reference, you can never get a segfault by dereferencing a void pointer, because you cannot actually compile a program that attempts to do so, hence there is nothing to run, and hence there is nothing to segfault.