From: darylew@googlemail.com   
      
   On Sunday, September 22, 2013 8:30:03 PM UTC-4, Daniel Krügler wrote:   
      
   > I do not understand what you mean by direct or indirect means in this   
   > contact. The standard clearly says that such types are not allowed, it   
   > doesn't distinguish direct or indirect ways to form them.   
      
   Where the Standard talks about adjacent array specifications, there are two   
   possible meanings:   
      
   1. The specifications are lexically adjacent: "using Z = int[][N]"   
   2. The specifications are logically adjacent: "using X = int[]; using Y = X[M]"   
      
   I wasn't sure of which meaning.  But you state that "adjacent" is logical; that   
   making an array of an array of unknown bound indirectly via composing type   
   aliases isn't allowed.   
      
   I found a C++14 draft, and it solves the problem unambiguously.  It explicitly   
   states that an array of unknown bound cannot be used as an array element type.   
      
   Daryle W.   
      
      
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