[ ghc-Bugs-1213876 ] Xlib Types Not Instances of Anything

[SourceForge.net]

Bugs item #1213876, was opened at 2005-06-02 23:55
Message generated for change (Comment added) made by simonpj
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=1213876&group_id=8032

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: libraries (other)
Group: 6.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Jon Cast (jcast)
Assigned to: Nobody/Anonymous (nobody)
Summary: Xlib Types Not Instances of Anything

Initial Comment:
The types defined by newtype in Graphics.X11.Xlib.Types
are not instances of any type classes.  Ptr, on the
other hand, which these types are synonyms for, is an
instance of Eq, Ord, Show, Typeable, Data, Storable,
and several other classes not relevant to the usage of
pointers in Graphics.X11.Xlib.

----------------------------------------------------------------------

>Comment By: Simon Peyton Jones (simonpj)
Date: 2005-08-11 15:15

Message:
Logged In: YES 
user_id=50165

Ross Paterson is looking into this.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=1213876&group_id=8032