Why is it crash?!Help

when i use it as follows,it will crash! any one can help me ?why?

thats probably not where the crash is coming from. can you share the console crash message

One thing I use to help debug is this in main.mm

#include "ofApp.h"
#include "ofMain.h"

void onException(NSException *exception)
{
    NSArray *stack = [exception callStackReturnAddresses];
    NSLog(@"Stack trace: %@", stack);
}

void signal_handler(int signum)
{
}

int main() {
    
    NSSetUncaughtExceptionHandler(&onException);
    
    struct sigaction new_action;
    new_action.sa_handler = signal_handler;
    sigaction(SIGABRT, &new_action, NULL);
    sigaction(SIGILL, &new_action, NULL);
    sigaction(SIGSEGV, &new_action, NULL);
    sigaction(SIGBUS, &new_action, NULL);
    sigaction(SIGPIPE, &new_action, NULL);

...
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