wall.hin

来自「1984-1993模糊 C 源代码竞赛.zip 非常的好,不过这是DOS格式,」· HIN 代码 · 共 22 行

Most Useful Obfuscation: <sdcrdcf!lwall> Larry Wall

	Larry Wall
	Unisys - System Development Group Santa Monica
	9132 Kester Ave
	Panorama City, CA  91402  USA

Try:	lwall | bc | lwall
input:	x*x
input:	c^2

Also try:  lwall | bc   and   lwall | cat

What we found amazing was how the flow of control was transferred
between subroutines.  Careful inspection will show that the array of
pointers to functions named `vi' refers to functions which seem to not
be directly called.  Even so, these pointers to functions are being
used as an argument to signal.  Can you determine why this is being
done and how it is being exploited?

Some compilers complained about this file, so we changed: '=++I' to '= ++I'.