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From: don@haigha.ARPA
Newsgroups: net.emacs
Subject: Gnu Emacs on the Sun-2
Message-ID: <4221@mit-eddie.UUCP>
Date: Fri, 10-May-85 17:03:52 EDT
Article-I.D.: mit-eddi.4221
Posted: Fri May 10 17:03:52 1985
Date-Received: Sat, 11-May-85 04:20:13 EDT
Sender: daemon@mit-eddi.UUCP
Organization: MIT, Cambridge, MA
Lines: 37

From: don@haigha.ARPA (Don Hopkins)
I haven't been able to get it to compile. Running make in the src directory
outputs:

cc -O -Demacs -DDisplayDebug -c dispnew.c
"dispnew.c", line 457: compiler error: expression causes compiler loop: try simplifying
*** Error code 1

Stop.

The offending code goes:

      set_window_height (XWINDOW (minibuf_window)->prev, newlength - 1);
      
I made a local (non register) variable to hold XWINDOW (minibuf_window), 
and changed the code to use it. That line compiles, but there are many, many
more lines that need to be fixed in the same way. I spent several hours going
through and fixing these... It also bombs on some of the other Xxxxxx()
macros. They're all defined as

#define Xxxxxx(a) ((struct xxxxx *) (a).u.val)

From the information that I have been able to gather, the reason that these
don't work has to do with a C compiler bug that generates the wrong code
for register pointers to bit fields in structures. There are several lines
like 

#ifndef SUN
  register
#endif SUN
    struct window *w = XWINDOW (selected_window);
#ifndef SUN

in there already. Evidently, there are a lot more needed. I have been told
that Gnumacs compiles on Suns. Does this mean the compiler I am using is
an older, broken version? I'm running Sun release 1.3 software. 
	-Don