Re: Being more anal about iospace accesses..

[Nikita Danilov]

Linus Torvalds writes:
 > 
 > 
 > On Wed, 15 Sep 2004, JЖrn Engel wrote:
 > > 
 > > C now supports pointer arithmetic with void*?
 > 
 > C doesn't. gcc does. It's a documented extension, and it acts like if it 
 > was done on a byte.
 > 
 > See gcc's user guide "Extension to the C Language Family".
 > 
 > It's a singularly good feature. 

Unfortunately it breaks even better identity

  foo *p;

  p + nr == (foo *)((char *)p + nr * sizeof *p)

unless one thinks that is --together with gcc-- that nothing occupies
exactly one byte.

 > 
 > 		Linus

Nikita.

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