🚀 go-pugleaf

Zefram (A.Main@dcs.warwick.ac.uk) wrote:
: Markus Freericks <mfx@cs.tu-berlin.de> wrote:
: [...]

: I'm afraid it does.  I think that

: int main()
: {
:  int x = 0, y;
:  (x,y) = 3;
:  return 0;
: }

: is a strictly conforming program, having the effect of assigning the
: value 3 to y.  Not having a copy of the standard, I'm not absolutely
: certain that the result of the comma operator can be an lvalue.  (gcc
: groks it, but that's irrelevant.)

Its not conforming.
You are need to do something like:

int main()
{
:  int x = 0, y;
  *(&x,&y) = 3;
  return 0;
}

On the other hand in your example the use of the comman operator is in a 
syntactically valid expression - the error is in the semantics. This will 
make it very difficult to parse as anything else, such as a compound 
assignment, so your point is valid.
is valid.

--
Stephen Baynes                              baynes@mulsoc2.serigate.philips.nl
Philips Semiconductors Ltd
Southampton                                 My views are my own.
United Kingdom