🚀 go-pugleaf

I have only been reading this news group for a month so excuse me if this
problem has been answered before.

I am currently running the X10R3 server on a Sun 3/50 and have been trying
to port clients to a CCI Power 6/32 running a hybrid of System V.2 and BSD4.2.
The compiler I am using on the 6/32 pads various parts of structures to
4 byte boundaries thus leaving "holes" as mentioned on page 130 of K&R.
Unfortunately, the XDraw family of Xlib routines are written in a non-
portable way that assumes structures are densely packed.  They cast an
array of Vertex structures into a character array and just send it as is.
This sends the padding along with the data.

I also noticed that both Xlib and the Server use structures in a non-
portable way to format the data sent or received on the network connection.
This was not a problem in my case, but could be on other systems.

Has anyone else had similar porting problems?  I have been told that the
AT&T 3B2 compiler does a similar type of structure padding, but I have not
used that machine myself.  Was this fixed in X10R4?  Will it be fixed in X.11?

---
Bruce Morgan

usenet: seismo!rlgvax!bruce
USmail: Computer Consoles, Inc., 11490 Commerce Park Drive, Reston, VA 22091
Phone:  (703)648-3300