Path: utzoo!attcan!uunet!wyse!vsi1!apple!rutgers!att!cord!jhpb
From: jhpb@cord.UUCP (JH Buehler)
Newsgroups: comp.sources.bugs
Subject: Re: GNU egrep Compilation Problem
Message-ID: <718@cord.UUCP>
Date: 24 Feb 89 12:21:06 GMT
References: <1776@dlvax2.datlog.co.uk>
Organization: AT&T Bell Laboratories, Liberty Corner
Lines: 30
In-reply-to: gis@datlog.UUCP's message of Tue, 21-Feb-89 11:42:16 EST

In article <1776@dlvax2.datlog.co.uk> gis@datlog.UUCP writes:

   I have just attempted to compile the GNU version of egrep that appeared on
   comp.sources.unix.  Compiling dfa.c generates the porblem below:

	   cc -O -DUSG -c dfa.c
	   "dfa.c", line 1133: compiler error: usable asked about nontemp register
	   *** Error code 1

It's a SYS V compiler bug.  Modify the code slightly as shown below.
Perhaps the GNU folks would like to change this also.
----------------
  /* Get the epsilon closure of the firstpos of the regexp.  The result will
     be the set of positions of state 0. */
  merged.nelem = 0;
#ifdef BUG_FIX
{
  int *p = nfirstpos -1;
  for (i = 0; i < *p; ++i)
    insert(firstpos[i], &merged);
}
#else
  for (i = 0; i < nfirstpos[-1]; ++i)
    insert(firstpos[i], &merged);
#endif
  epsclosure(&merged, r);
-- 
Joe Buehler
jhpb@lancia.ATT.COM
att!lancia!jhpb