Little rusty on C, so not sure if this is a compiler bug or not (I'm
using DMC 8.42n):

------------------------------------
typedef struct {
    int a;
} Foo;

int bar = (sizeof ((Foo*)0)->a);
------------------------------------

> dmc -c test.c
int bar = (sizeof ((Foo*)0)->a);
                            ^
m.c(5) : Error: ')' expected
--- errorlevel 1

FWIW, Adding an additional set of parens like below gets around the error:

int bar = (sizeof (((Foo*)0)->a));

On Wed, 31 Oct 2012 03:29:50 -0400
Nick Sabalausky <SeeWebsiteToContactMe@semitwist.com> wrote:

> Little rusty on C, so not sure if this is a compiler bug or not (I'm
> using DMC 8.42n):
> 
> ------------------------------------
> typedef struct {
>     int a;
> } Foo;
> 
> int bar = (sizeof ((Foo*)0)->a);
> ------------------------------------


I should point out I came across that in an existing C lib, a release version, so presumably it works on at least *some* C compiler. Just not sure whether or not it *should* work, or (for all I know) maybe it's one of those "undefined" areas of the langauge.