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From: wilson@uhccux.uhcc.hawaii.edu (Tom Wilson)
Newsgroups: comp.lang.c
Subject: Re: Microsoft C 5.1 - bug
Message-ID: <3758@uhccux.uhcc.hawaii.edu>
Date: 14 Apr 89 10:56:11 GMT
References: <1051@dgbt.uucp>
Reply-To: wilson@uhccux.UUCP (Tom Wilson)
Organization: East-West Center, Honolulu
Lines: 35

In article <1051@dgbt.uucp> lew@dgbt.crc.dnd.ca (Lew Stelmach) writes:
>The following program compiles successfully on Microsoft C5.1,
>Microsoft Quick C 2.0, TurboC, DEC VAX Ultrix C, Sun Unix C, and other
>compilers.  However, it does not run correctly when compiled using
>Microsoft C5.1. Note that it runs correctly on Microsoft Quick C 2.0.
>
[ Program listing and output deleted]

1.  I ran this and confirm the bug in MSC 5.1

2.  When I specified no compiler optimzation (/Od), the bug went away.  While
    I don't have time to look at the object output, it looks like maybe some
    incorrect overoptimization.

3.  This isn't the first MSC bug that I have seen posted, or found myself.
    While I have seen postings from various folks at Microsoft, I have never
    found a direct e-mail route for sending this type of bug.  They seem to want
    everything to come by U.S. Snail.  Is this actually the case?  What about
    other vendors (not just PCs) -- this would seem like a useful group
    for someone at the compiler builders to watch; it doesn't seem like it
    would take that much time (just judicious use of 'k').


>Lew Stelmach, Ph.D.           Communications Research Centre
>                              P.O. Box 11490, Station H 
>(613) 998 2005                Ottawa, Ontario, K2H 8S2, Canada
>
>BITNET: lew@doccrc.bitnet 
>Others: lew@dgbt.crc.dnd.ca        
>---------------------------------------------------------------------


-- 
Tom Wilson                        wilson@uhccux.uhcc.Hawaii.Edu (Internet)
                                  wilson@uhccux.UUCP || wilson@uhccux (Bitnet)