Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!unisoft!mcfong
From: mcfong@unisoft.UUCP (Martin C. Fong)
Newsgroups: comp.windows.x
Subject: Re: X11R3 on Pyramid
Message-ID: <2037@unisoft.UUCP>
Date: 6 May 89 20:21:01 GMT
References: <8905051503.AA07259@expo.lcs.mit.edu>
Reply-To: mcfong@unisoft.UUCP (Martin C. Fong)
Lines: 66

In article <8905051503.AA07259@expo.lcs.mit.edu> S.Davey@CS.UCL.AC.UK writes:
>
> [ ... stuff deleted ... ]
>
>The compiler fails on 
>AsciiSink.c and complains that line 58 of TextSrcP.h has
>a missing semi-colon but on investigation there is no
>missing semi-colon.
>
> [ ... stuff deleted ... ]
>
>Steve Davey  
>Systems Group
>Dept Computer Science
>University College London
>tel +44-1-380-7280
>email S.Davey@cs.ucl.ac.uk

The Pyramid C compiler has some trouble with a traditional pointer to
function declaration (ie. " int (*foo)(); ") within a structure
declaration.  The problem appears to be a variable/type name space
scoping problem.  For example, the following will not work:

	typedef	int	foo;
	typedef struct	bar
	{
	      int	(*foo)();
	};

The new type "foo" for some reasons collides with the structure
variable "foo".  However, this code will work if re-written as:

	typedef	int	foo;
+	typedef	(*IntFuPtr)();
	typedef struct	bar
	{
!	      IntFuPtr	foo;
	};

Below is my patch to "TextSrcP.h" which will work around this problem.
I don't seem to have any trouble with "AsciiSink.c".  Care to elaborate
on what the compiler burped on?

*** TextSrcP.h.old	Sat May  6 12:23:30 1989
--- TextSrcP.h.new	Sat May  6 12:21:47 1989
***************
*** 52,61 ****
--- 52,69 ----
      caddr_t		data;	    
      };
  
+ #ifdef pyr
+     typedef int (*IntFuPtr) ();
+ #endif pyr
+ 
  typedef struct _XtTextSink {
      XFontStruct	*font;
      int foreground;
+ #ifdef pyr
+     IntFuPtr Display;
+ #else pyr
      int (*Display)();
+ #endif pyr
      int (*InsertCursor)();
      int (*ClearToBackground)();
      int (*FindPosition)();