c++ - CRTP error with XCode 4.5.2 - Parse Issue, expected expression -

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I'm using something to implement, but stuck on an error in XCode 4.5.2. The following code is a simplified version that still replicates the error. It is on the line where the method api :: Enable is defined and there is something with the fact that when there is no code when Api :: Enable Call it-> T: Enable 

  enum enum {FOO, BAR, BAZ,}; Template & lt; Typename T & gt; Class AP {Public: Template & lt; Enum E, bool On & gt; Enable Zero () {static_cast & lt; T * & gt; (This) - & gt; Enabled & lt; E, on & gt; ();}}; Class APiIPL: Public API & lt; APIIML & gt; {Public: Template & lt; Enum E, bool On & gt; Enable Zero () {}}; Int main (int argc, const char * argv []) {ApiImpl clsApi; clsApi.Enable & lt; FOO, true & gt; (); Return 0; }   
 Here is a screenshot of error in Xcode:. I get the same error that I use "apple llv compiler 4.1" or "llmm gcc 4.2". MSVC Express 2010 compiles without error.  
 Note that adding function parameters removes the error. The following collection is correct:  
  enum enum {FOO, BAR, BAZ,}; Template & lt; Typename T & gt; Class AP {Public: Template & lt; Enum E, bool On & gt; Zero enabled (unsigned int x) {static_cast & lt; T * & gt; (This) - & gt; Enabled & lt; E, on & gt; (X);}}; Class APiIPL: Public API & lt; APIIML & gt; {Public: Template & lt; Enum E, bool On & gt; Enable Zero (unsigned int) {}}; Int main (int argc, const char * argv []) {APIIMPL CLSAP; ClsApi.Enable & lt; FOO, true & gt; (0); Return 0; }    
 
 
 To resolve the dependent template, you should see the  template  Keywords should use name:  
  template & lt; Enum E, bool on & gt; Enable Zero () {static_cast & lt; T * & gt; (This) - & gt; Template & lt; E, on & gt; (); }   
 C ++ 11,  [temp.names] / 4 :  
 
 When the name of a member template expert Appears later or - & gt; Object expression in postfix-expression or in a qualified-id, and postfix-expression object expression type-dependent or in qualified-id, nested-name-space refers to a dependent type, but name current instant ( 14.6.2.1), the member template name should be prefixed by the keyword template. Otherwise the name is named non-template.   
 If  is enabled ()  for example  template & lt; Typename T & gt; Enable Zero () {} , then TIFF shows an error:  Error: Use the 'template' keyword to treat 'enabled' as the dependent template name .  
 I do not know why it produces irrelevant messages in your case (when there are no template logic). I think this bug can be posted as a report. (I was tested at tilt 3.6 - same).  
 In addition, GCC 4.8 and 4.9 do not cause any errors on this code, which is what I want is also wrong.

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