> When porting an application to Solaris, I met a problem for array
> with 0 element.
>
> An array with 0 element can be used in class/struct declaration.
> It's like a place holder to add more memory at the end of the
> class/struct instance in the future, to make the size of the
> class/struct variable. For example:
>
> struct {
> uint32 length;
> uint16 buffer[0];
> } a;
>
> It seems that the sun cc doesn't support this. When I build it, the
> error message shows "Error: An array must have at least one element.".
> And it works fine with gcc. Is this an extension feature for gcc? Is
> there any workaround for this with sun cc?
The C99 standard supports this through flexible array members.
struct {
uint32 length;
uint16 buffer[];
} a;
AFAIK, recent versions of either compiler support this feature.
--
meem
