Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!bloom-beacon!expo.lcs.mit.EDU!jim
From: jim@expo.lcs.mit.EDU (Jim Fulton)
Newsgroups: comp.windows.x
Subject: Re: "Sun 4 Xt error"
Message-ID: <8810071529.AA01479@EXPO.LCS.MIT.EDU>
Date: 7 Oct 88 15:29:35 GMT
References: <8810071519.AA27168@ti.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: X Consortium, MIT Laboratory for Computer Science
Lines: 53


The problem probably arised from the XtBCopy, XtBZero, and XtBCmp macros in
lib/Xt/IntrinsicI.h.  If you change them as follows, things should work much
better (i.e. I chased this same problem down with someone else):

*** R2/IntrinsicI.h	Fri Feb 26 12:41:24 1988
--- IntrinsicI.h	Fri Oct  7 11:27:14 1988
***************
*** 40,67 ****
  
  extern void bcopy();
  #define XtBCopy(src, dst, size)				    \
!     if (size == sizeof(int) &&				    \
! 	!((unsigned int) src & 0x3) &&			    \
! 	!((unsigned int) dst & 0x3))			    \
! 	*((int *) (dst)) = *((int *) (src));		    \
!     else if (size == sizeof(char))			    \
! 	*((char *) (dst)) = *((char *) (src));		    \
!     else						    \
! 	bcopy((char *) (src), (char *) (dst), (int) (size));
  
  extern void bzero();
  #define XtBZero(dst, size)				    \
!     if (size == sizeof(int))				    \
! 	*((int *) (dst)) = 0;				    \
!     else						    \
! 	bzero((char *) (dst), (int) (size));
  
  extern int bcmp();
  #define XtBCmp(b1, b2, size)				    \
!     (size == sizeof(int) ?				    \
! 	*((int *) (b1)) != *((int *) (b2))		    \
!     :   bcmp((char *) (b1), (char *) (b2), (int) (size))    \
!     )
  
  
  
--- 40,54 ----
  
  extern void bcopy();
  #define XtBCopy(src, dst, size)				    \
! 	bcopy((char *) (src), (char *) (dst), (int) (size))
  
  extern void bzero();
  #define XtBZero(dst, size)				    \
! 	bzero((char *) (dst), (int) (size))
  
  extern int bcmp();
  #define XtBCmp(b1, b2, size)				    \
! 	bcmp((char *) (b1), (char *) (b2), (int) (size))