Open Radar

 
After I updated Xcode to version 7.0.1 (7A1001), I can no longer 'po' variables in LLDB console.

Steps to Reproduce:
1. Run project in the Simulator (iPhone 6, iOS 9.0)
2. Stop inside viewDidLoad in a view controller (put a breakpoint)
3. 'po' self in LLDB console.


Expected Results:
The object is printed

Actual Results:
The following error message is printed instead

error: <EXPR>:9:9: warning: initialization of variable '$__lldb_error_result' was never used; consider replacing with assignment to '_' or removing it
    var $__lldb_error_result = __lldb_tmp_error
    ~~~~^~~~~~~~~~~~~~~~~~~~
    _
<EXPR>:15:5: error: value of optional type 'Optional<UserLoginViewController>' not unwrapped; did you mean to use '!' or '?'?
    $__lldb_injected_self.$__lldb_wrapped_expr_7(     


If I try 'po self!', I get:

error: <EXPR>:1:5: error: cannot force unwrap value of non-optional type '$__lldb_context' (aka 'UserLoginViewController')
self!
~~~~^
    
<EXPR>:15:5: error: value of optional type 'Optional<UserLoginViewController>' not unwrapped; did you mean to use '!' or '?'?
    $__lldb_injected_self.$__lldb_wrapped_expr_8(     
    ^

The debugger is severely degraded and is barely usable. I tried deleting derived data - to no avail.


Version:
version 7.0.1 (7A1001)

Complete reinstallation of Xcode does not help.