RE: Question for ISO C standards gurus

[Diego Novillo <dnovillo@redhat.com>]

On Thu, 2004-03-25 at 13:08, Dave Korn wrote:

> "Here is the complete list of all sequence points in C++: 
> 
> at the end of a full expression 
> 
> after the evaluation of all function arguments in a function call and before
> execution of any expressions in the function body 
> 
> after copying of a returned value and before execution of any expressions
> outside the function 
> 
> after evaluation of the first expression in a&&b,  a||b,  a?b:c,  or  a,b 
> 
> after the initialization of each base and member in the constructor
> initialization list "
> 
So, the program below should print 5?  It certainly doesn't with gcc 3.2
nor mainline:

int foo (int x)
{
  return x;
}

main ()
{
  int *p;
  int a[2];
  a[0] = 4;
  a[1] = 5;
  p = a;
  printf ("%d\n", foo (*p++));
}

It will print 5 if I use pre-increment on 'p', which is what I would've
expected (I'm no language lawyer, though).


Diego.