On Sunday, May 5, 2019 at 1:09:47 AM UTC+8, Jan Mercl wrote:
>
> On Sat, May 4, 2019 at 6:53 PM T L <tapi...@gmail.com <javascript:>>
> wrote:
>
> > BTW, the type bar is defined as
> >
> > typedef struct bar bar;
>
> If struct bar is not yet defined at that point then it's an incomplete
> type. So is bar. Not sure if calling an incomplete type 'defined'
> makes sense.
>
> However, this should be IMO ok
>
> typedef struct bar bar; // bar is an incomplete type
>
> struct bar { int foo; }; // bar is now a complete type
>
> bar [2]x; // This declaration of x is now ok.
>
Thanks for the explanations.
Long time not using c/c++. It looks it is a deference between c and c++.
The following program compiles ok for g++ and clang++, but not gcc and
clang.
typedef struct bar bar;
int foo(bar bars[]) {
return 0;
}
int main() {
int x = 1;
bar* y = (bar*)&x;
return foo(y);
}
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