Don't compare file handles to NULL
Francois Gouget
fgouget at free.fr
Thu Mar 8 08:25:41 CST 2007
On Thu, 8 Mar 2007, Alexandre Julliard wrote:
[...]
> Note that a valid file handle will never be NULL, so while these
> checks are wrong in theory, in practice it makes no difference.
Right. But the invalid check means that in some cases we will call
CloseHandle(INVALID_HANDLE_VALUE) which the MSDN has this to say about:
> If the application is running under a debugger, the function will
> throw an exception if it receives either a handle value that is not
> valid or a pseudo-handle value. This can happen if you close a handle
> twice, or if you call CloseHandle on a handle returned by the
> FindFirstFile function.
I did not check but I guess Wine does not do that... so far. It's still
best avoided.
--
Francois Gouget <fgouget at free.fr> http://fgouget.free.fr/
The nice thing about meditation is that it makes doing nothing quite respectable
-- Paul Dean
More information about the wine-devel
mailing list