Newsgroups: comp.sys.amiga
Path: utzoo!utgpu!jarvis.csri.toronto.edu!csri.toronto.edu!sam
From: sam@csri.toronto.edu (Sam Weber)
Subject: Re: TDI Modula-2/Amiga
Message-ID: <8901070111.AA12536@carlton.csri.toronto.edu>
Summary: Yet more bugs
Keywords: bug city
Organization: University of Toronto, CSRI
References: <1443@psu-cs.UUCP>
Date: Fri, 6 Jan 89 20:11:46 EST

In article <1443@psu-cs.UUCP> bartonr@psu-cs.UUCP (Robert Barton) writes:
>Some notes on TDI Modula-2/Amiga-
>  
>Finding errors: Version 0.10a of the editor reliably reads the error file and
>no longer inserts a bunch of spaces at the beginning of the file being edited.
>It displays both text and menu headers incorrectly if the user has chosen the
>60-column mode from Preferences, and sets the maximum width of the window to
>640 pixels regardless of screen size.
> 
>RAM Disk support: Version 3.01a of the compiler will compile files on the
>RAM Disk.
> 
>The definition modules: These are the major remaining source of problems.  They
>range from minor (ANOPktFail for ANQPktFail, TimerRequest for TimeRequest) to
>fatal (CIAB declared at the wrong absolute address, fields missing or reversed
>in IntuitionBase, incorrect offsets in CIAType and MemEntry).

Yet more problems (with the 3.01a version):

I had an integer variable declared, and overflow checking turned on.  The
variable had value -1.  Adding 1 to this variable caused an overflow
in integer expression error.  Apparently 0 is too large to be represented!
(Also note, the same lines at a different part of the program caused no
problem, so it probably depends upon what registers the compiler is using
at the time)
-- 
    --Sam Weber        "An Academic speculated whether a bather is beautiful
                      if there is none in the forest to admire her. He hid
      sam@csri        in the bushes to find out, which vitiated his premise
                      but made him happy.
                        Moral: Empiricism is more fun than speculation."