Ian Lance Taylor <iant@xxxxxxxxxx> writes:
> > >> void foo() {
> > >> if(
> > >> ( __extension__
> > >> (
> > >> (
> > >> (
> > >> union {
> > >> int a;
> > >> int b;
> > >> }
> > >> ) { .a =7 }
>
> This is a constructor expression. The type is the anonymous union.
> The value is the initializer expression, which in this case sets field
> 'a' to '7'.
>
> > >> ) .b
>
> This is a reference to field 'b' of the newly constructed union. It
> should be zero or garbage, I can't remember which.
Whoops, sorry, I was thinking struct. Since it's a union, field 'b'
should also have the value '7'.
> > >> )
> > >> ) == 7 ) {
> > >> printf("abc\n");
> > >> }else {
> > >> printf("def\n");
> > >> }
> > >> }
Ian
