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From: morten@cs.qmw.ac.uk (Morten Ronseth)
Newsgroups: comp.sys.mac.programmer
Subject: Flex for MPW
Message-ID: <2632@sequent.cs.qmw.ac.uk>
Date: 13 Aug 90 09:50:15 GMT
Reply-To: morten@cs.qmw.ac.uk (Morten Ronseth)
Organization: Computer Science Dept, QMW, University of London, UK.
Lines: 45


For the last couple of days, I've been trying to port flex to the MPW
environment. Everything compiles just fine, no problems there.
But, whatever *.l file i run flex on, it seems to gag and die. For
example, on an empty input file, it does
	---accepting rule: #116 fatal parse error at 1.
falls over and dies. On a file containing

	%{
	#include "hello.h"
	%}

it spits out:
	---accepting rule: #116
	---accepting rule: #116
	---accepting rule: #0
	---accepting rule: #16 syntax error at line 1: illegale character
	---accepting rule: #116
	---accepting rule: #0
	---accepting rule: #115
	flex: flex scanner jammed


Now the state of the machine is:
	yy_act = 16
	yytext = "%"
	yy_current_state = 51
	yy_hold_char = 123

right after `yy_act = yy_accept[yy_current_state]' in the second `while (1)' loop
in flexscan. Can anyone tell me why it chokes on an input like this?

This might not be the correct group to post this to, but I thought I'd give it
a go.


		Morten.
-- 
====================================================================
Morten Lerskau Ronseth             UUCP:   morten@qmw-cs.uucp
Dept. of Computer Science          JANET:  morten@uk.ac.qmw.cs 
Queen Mary and Westfield College   ARPA:   morten%qmw.cs@ucl-cs.arpa 
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