Topic: Is a void expression an rvalue?


Author: Gerard Weatherby <gerardw@alum.mit.edu>
Date: 1997/10/01
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Aaron S. Binns wrote:
> 3.10.5 says that function calls that don't return references are
> rvalues.  Since
> void isn't a reference type, I guess this implies that void returning
> functions
> are rvalues.

Sure. Check out:

3.10.9 ... Rvalues shall always have  complete  types
  or  the  void  type; ...
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Author: fjh@mundook.cs.mu.OZ.AU (Fergus Henderson)
Date: 1997/09/26
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"Aaron S. Binns" <asbinn@rstcorp.com> writes:

 >In the Dec. 2, 1996 DWP, 3.10.1 says:
 >
 >   Every expression is either an lvalue or an rvalue.
 >
 >Which of these is a fuction call to a function with a void return type?

It is an rvalue.

 >3.10.5 says that function calls that don't return references are
 >rvalues.  Since
 >void isn't a reference type, I guess this implies that void returning
 >functions
 >are rvalues.

Correct.

--
Fergus Henderson <fjh@cs.mu.oz.au>   |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>   |  of excellence is a lethal habit"
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