Ansi C allows that two different structs can contain pointers to each other (also shown in structs-that-refer-to-each-other). I know that this is not a good idea in many circumstances, but that's not the question here. Is it possible to achieve the same using typedef'ed structs?
The code below works just fine.
struct b;
typedef struct a {
struct b *bb;
} A;
typedef struct b {
struct a *aa;
} B;
But using type "B" it fails
typedef struct b B;
typedef struct a {
B *bb;
} A;
typedef struct b {
A *aa;
} B;
with
error: redefinition of typedef ‘B’
Is it possible to tell the compiler that ‘B’ will be declared later and use it in the definition of A?
You can do this instead:
typedef struct a A;
typedef struct b B;
struct a {
B *bb;
};
struct b {
A *aa;
};
Does this work for you ?
The issue is that you already typedef'd it.
You should do something like this:
struct a;
struct b;
typedef struct a A;
typedef struct b B;
And then you can define struct a and b and use a,b,A*,B* in the definitions of a and b
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