ios - lldb class has incompatible superclass -

i have become unable print out object properties or call methods inside of lldb. thing prints out is:

error: class '<classname>' has incompatible superclasses note: inherits superclass 'nsobject' here 

this true basic object types, such as: nsarray, nsdictionary, , nsstring. here's specific example:

(lldb) po functie.length error: class 'nsstring' has incompatible superclasses note: inherits superclass 'nsobject' here error: 1 errors parsing expression 

the methods available available in nsobject, such -class. extending previous example:

(lldb) po [functie class] __nscfstring 

if has idea problem is, input appreciated. thank you.

try one:

1. select project in left project navigator.

2. switch build settings tab.

3. search debug information format.

4. set value debug dwarf.

5. clean build folder: hold option + command + shift + k (that ⌥ + ⌘ + ⇧ + k).

6. rebuild project: ⌘ + r.

good luck.