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   comp.lang.c++.moderated      Moderated discussion of C++ superhackery      33,346 messages   

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   Message 32,243 of 33,346   
   Seungbeom Kim to cartec69@gmail.com   
   Re: Most-derived objects objects shall h   
   04 May 12 17:37:18   
   
   eeda2344   
   From: musiphil@bawi.org   
      
   On 2012-05-04 15:15, cartec69@gmail.com wrote:   
   >   
   > There is no contradiction if sizeof(*new int[0]) != 0, [...]   
      
   'new int[n]' "yields a pointer to the initial element (if any) of the   
   array" (5.3.4/5), not a pointer to the entire array, so '*new int[n]' just   
   designates an int object, and sizeof(*new int[n]) is always sizeof(int).   
   There's no way to apply sizeof to a dynamically allocated array object.   
      
   It is interesting that 5.3.4/5 writes "(if any)", as if it took zero-length   
   arrays into account, and a footnote in 5.3.5 even says "Zero-length arrays   
   do not have a first element," though another footnote in 8.5.1 says "C++   
   does not have zero length arrays." Is the standard contracting itself?   
      
   --   
   Seungbeom Kim   
      
      
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