help iOS developer to breakpoint when NSDictionary construction failed because of nil object

HelpfulBreakpoints.m

#import <objc/runtime.h>
#import <objc/message.h>

// copied from http://stackoverflow.com/questions/17346046/advice-on-how-to-catch-attempt-to-insert-nil-object-from-a-device-needed

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wundeclared-selector"

static id safe_initWithObjects(id self, SEL _cmd, const id objects[], const id <NSCopying> keys[], NSUInteger count) {
    id orignialResult = nil;
    @try {
        orignialResult = objc_msgSend(self, @selector(safe_initWithObjects:forKeys:count:), objects, keys, count);
    }
    @catch (NSException *exception) {
        NSLog(@"BUSTED!"); // put breakpoint here
    }
    
    return orignialResult;
}

void EnableHelpfulBreakpoints(){
    Class target = NSClassFromString(@"__NSPlaceholderDictionary");
    class_addMethod(target, @selector(safe_initWithObjects:forKeys:count:), (IMP)&safe_initWithObjects, "@@:**L");
    
    Method m1 = class_getInstanceMethod(target, @selector(safe_initWithObjects:forKeys:count:));
    Method m2 = class_getInstanceMethod(target, @selector(initWithObjects:forKeys:count:));
    method_exchangeImplementations(m1, m2);
}

#pragma clang diagnostic pop