"Michael Gong" <mwgong@xxxxxxxxxxxxxx> writes:
> My question is how to interperate the code, since I don't understand
> its syntax.
>
> If it is a C99 code, what's the C99 feature for it ?
I'm sorry, I don't understand this question. What kind of answer are
you looking for?
> >> 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.
> >> )
> >> ) == 7 ) {
> >> printf("abc\n");
> >> }else {
> >> printf("def\n");
> >> }
> >> }
Ian
