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From: volf@ebs.eb.ele.tue.nl (frank volf)
Newsgroups: comp.sys.apollo
Subject: Re: Apollo CC 5.7 Optimizer bummer
Message-ID: <1142@eba.eb.ele.tue.nl>
Date: 10 May 91 07:13:15 GMT
References: <1991May8.231635.8782@emperor.scs.com> <1520@fang.dsto.oz> <51760d86.20b6d@apollo.HP.COM>
Sender: news@eb.ele.tue.nl (The News system)
Distribution: comp
Organization: Eindhoven University of Technology, The Netherlands
Lines: 45


In article <51760d86.20b6d@apollo.HP.COM> rehrauer@apollo.HP.COM (Steve Rehrauer) writes
> [stuff deleted]
> SIGH.  Please DO report such problems.  We *LOVE* APRs with 50-line
> programs that fail in simple ways. :-)  Seriously, I know many of

Well in that case, here is a pascal compiler optimizer problem. The program is very small 
(Yes, I know it is not a useful program!) and it fails in a very simple way: the pascal
compiler keeps optimizing for ever and never returns my shell prompt!.

Here it is:

ebs{volf}[//ebg/users/volf/temp] 11 > cat test.pas

program test;

begin


repeat 

until false;

end.
ebs{volf}[//ebg/users/volf/temp] 12 > pas test.pas -opt 0
No errors, no warnings, no info msgs, Pascal compiler 68K Rev 8.8(159)
ebs{volf}[//ebg/users/volf/temp] 13 > pas test.pas -opt 1
Compiler backend failure while processing routine "test" 
   ^
   !
   This messages appears if you kill the process after several {minutes, hours}.

BTW: we run SR10.3 and release 8.8 of the pascal compiler.

          






Frank Volf (volf@eb.ele.tue.nl)
Eindhoven University of Technology
Digital Systems Group, Room EH10.16
P.O. 513, 5600 MB Eindhoven, The Netherlands