Linux gcc 3.2.2 invalid initializer for fpos_t 1

[areza123]

I have a strange problem on my gcc 3.2.2 installed in my SuSE Linux box. It does not compile a simple source file containing fpos_t. Strange. Am I missing some thing? It gives me error invalid initializer fpos_t

 

[Salem]

You initialise an fpos_t by calling fgetpos()

Anything else is a presumption on how the opaque type which is fpos_t is actually implemented.

fpos_t foo = 0;     // may be ok in some places
fpos_t bar = { 0 }; // may be ok in some other places

--

 

[areza123]

Thanks Salem for the reply. fpos_t is typede'd to long is Sun Solaris but I find that on my Linux it is typedef'd to __c_streampos; On my Sun machine I could use code like

fpos_t obj;
if (!obj) {...}

But this does not seem to be the right approach with __c_streampos? Could you suggest an alternative to the unary exclamation mark please?

 

[Salem]

> if (!obj) {...}
OK, I suppose on your Sun box, it's basically the same as
[tt]if ( obj == 0 )[/tt]
which I suppose could be taken to mean "the beginning of the file".

Perhaps a better way of determining whether you are at the beginning of the file.

This is a bit of a hack, since it's mixing old-style file positioning with new-style file positioning.

if ( ftell( fp ) == 0 ) /* was if (!obj) */

But then again, there is no fpos_t equivalent of fseek()

--

 

[areza123]

hmmm , yep I was looking for a better alternative, I guess I'll have to live with this. Thanks for the prompt replies anyways...it always helps