Path: utzoo!mnetor!uunet!husc6!bbn!rochester!rutgers!bellcore!faline!ulysses!gamma!pyuxp!pyuxe!pyuxf!robf2
From: robf2@pyuxf.UUCP (robert fair)
Newsgroups: comp.sys.ibm.pc
Subject: Re: MSC 5.0 Intrinsic Bug
Message-ID: <205@pyuxf.UUCP>
Date: 23 Dec 87 15:02:56 GMT
References: <211@mosys.UUCP>
Organization: Bell Communications Research
Lines: 28
Summary: Don't use intrinsic in large model

In article <211@mosys.UUCP>, nortond@mosys.UUCP (Daniel A. Norton) writes:
> Copyright (c) 1987, Daniel A. Norton.  All Rights Reserved.
  decribes a bug in the intrinsic strlen() for MSC 5.0 using large
  model.

  Every intrinsic I have tried (strlen,strcpy,strncpy,memcpy...)
  has the same bug in large model (-AL -AH, -AC).

  Since these tend to produce horrible, subtle problems in the
  code I would suggest avoid using intrinsic functions *at all* in large
  model [Speaking from a very frustrating weekend tracking down such `bugs']
  and once again flame Microsoft for sending out a product which must be 
  almost totally untested !

  The loop optimization is also very buggy in large model, producing `hidden'
  bad code in inappropriate places.

  In short, the `optimizing' compiler really is:

      "An optimizing compiler for small & medium models and 
      a joke for large model"

  A very pissed off MSC 5.0 user  (and I LIKED MSC 3.0 & 4.0...)


Rob Fair
Currently at: Bellcore/CHC
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