[Guy Harris <guy@xxxxxxxxxxxx>]

On Nov 7, 2003, at 1:48 PM, Michael Lum wrote:

> I have built an ethereal.exe.
>
> It fails to open any file, with the popup given (attachment).
>
> The prebuild binary does not have a problem.
>
> Does anybody have any ideas ?

The code path that produces the error probably goes through "cf_open()".

That goes through "wtap_open_offline()", which calls "open()" - which 
should be mapped to "_open()" on Windows, courtesy of GLib - to get a 
C-library file descriptor.  It then calls "filed_open()" to get a "FILE 
*"; if you're building with Zlib, that's "gzdopen()", otherwise it's 
"fdopen()" (which should be mapped to "_fdopen()" on Windows).

If "wtap_open_offline()" succeeds, it calls "wtap_fd()", which should 
return the file descriptor, and does an "fstat()" on that (which might 
get mapped to "_fstat()" on Windows).

It probably failed in:

	1) "_open()";

	2) "_fdopen()", if you're not building with ZLib;

	3) "_fstat()".

Those *should* presumably all work in VS.NET, as well as the VC++ 6.0 
that many of us use, but perhaps Microsoft "improved" things so that 
they don't actually work.

If you're building with Zlib, perhaps there's some problem with Zlib - 
the Zlib binaries were probably built with VC++ 6.0 or earlier, but 
that should presumably work with VS.NET, but, again, perhaps Microsoft 
"improved" things.