array bound bug in expr(1)

[David Trueman]

In the function ematch(), expbuf is declared with the #define'd constant
ESIZE (= 256).  But, the function compile is called as follows:

	compile(p, expbuf, &expbuf[512], 0);

The wired-in 512 should be changed to ESIZE.

This bug is present in at least V7, System 3, and 4.1BSD.
-- 
				David Trueman @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!david