Gcc 1.39 and X386 1.1b (and xfig 2.0 p10)

[Stu Donaldson]

After bringing up Roell's X386 1.1b, using gcc 1.39 (standard distribution,
not the stuff with direct support for COFF and gdb), I tried to get
xfig up.  I grabbed the latest copy I could find, xfig 2.0 pl10 and
it compiled first try without any problems.  However, upon running
it, it would crash the server when I tried to draw any lines.

After turnning debug on in the server, and compiling with '-g' I
was able to trace it down to the function miWideSegment (ddx/mi/miwideline.c)
where it was getting a floating point exception error.  I used sdb
to find the values in the offending line of code, could not find what
was causing the error.  I then recompiled miwideline.c with the stock
C compiler (cc) and linked X386 using gcc, and my problem was solved.

There is apparently a bug in how gcc is dealing with floating point.
I had one earlier occasion using xeyes where it failed with a floating
point exception when using gcc. 

I'm running an ACER 1100/33, 80387, and ISC 2.2. I haven't had any other
noticeable problems, but then I hadn't been using gcc for very long either.

So has anyone else seen this problem?  Is it possible that I have
something wrong with my configuration?  When I made gcc, everything
worked fine, and it passed the various tests that it came with.

Anyway, hope this helps if anyone else out there has a similar problem.

	-- Stu --
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Stu Donaldson                   "Can't you understand what I'm saying?" 
stu at mav.com                     "What happened?  Did you Fail Telepathy?"