problem in declaration

[David Lindauer]

If I do this:

struct xyz
{
xyz();
int a,b;
} var1;

it compiles.

But if I do this

struct xyz
{
xyz();
int a,b;
} var2();

it doesn't compile. The comeau compiler says var2() is a function
rather than a variable initialization...

but then I can do this:

struct xyz
{
xyz();
int a,b;
} ;
struct xyz var3();

and that compiles.

What is the rational for the difference in behavior?

Thanks,

David

 

[Victor Bazarov]

If I do this:

struct xyz
{
xyz();
int a,b;
} var1;

it compiles.

But if I do this

struct xyz
{
xyz();
int a,b;
} var2();

it doesn't compile. The comeau compiler says var2() is a function
rather than a variable initialization...

Yes, it is.

but then I can do this:

struct xyz
{
xyz();
int a,b;
} ;
struct xyz var3();

and that compiles.

What is the rational for the difference in behavior?

Types are not allowed to be _defined_ in a function declaration.

V

 

[Rolf Magnus]

If I do this:

struct xyz
{
xyz();
int a,b;
} var1;

it compiles.

But if I do this

struct xyz
{
xyz();
int a,b;
} var2();

it doesn't compile. The comeau compiler says var2() is a function
rather than a variable initialization...

but then I can do this:

struct xyz
{
xyz();
int a,b;
} ;
struct xyz var3();

and that compiles.

What is the rational for the difference in behavior?

If it looks like a function declaration, it is a function declaration.
Your second example is similar to:

type name();

which clearly looks like a function declaration.