🚀 go-pugleaf

Hello

I'm working on the exercises in Volume 5 of "C++ Object-Oriented Programming"
and had the following problem.

(Section 2)
I copied the code for ex2.c from the Answers directory and received the
following errors, including the internal compiler error which requests
that you be informed:

avatar% make ex2
g++   -target sun4 -c -o string.o string.c
ar rv libpre_wind.a string.o
a - string.o
ar: creating libpre_wind.a
rm -f string.o
g++   -target sun4 -c -o point.o point.c
ar rv libpre_wind.a point.o
a - point.o
rm -f point.o
touch Display_med.h
g++   -target sun4 -c -o display_med.o display_med.c
display_med.c: In method `void  Display_medium::add_line (const class Point&, co
nst class Point&, long unsigned int)':
display_med.c:26: warning: implicit declaration of function `abs'
ar rv libpre_wind.a display_med.o
a - display_med.o
rm -f display_med.o
touch Screen.h
g++   -target sun4 -c -o screen.o screen.c
In file included from screen.c:2:
Screen.h:36: warning: class `Screen' has virtual functions but non-virtual destr
uctor
screen.c: In method `class Point Screen::size ()const ':
screen.c:20: Internal compiler error.
screen.c:20: Please report this to `bug-g++@prep.ai.mit.edu'.
*** Error code 1
make: Fatal error: Command failed for target `libpre_wind.a(screen.o)'

Thanks in advance
Mark Charalambous
mc@vicorp.com
413-586-4144