From:	ad354 AT FreeNet DOT Carleton DOT CA (James Owens)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: InfoZIP vol label: force it, but please advise
Date:	8 Nov 2000 12:47:57 GMT
Organization:	The National Capital FreeNet
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To:	djgpp AT delorie DOT com
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Eli Zaretskii (eliz AT is DOT elta DOT co DOT il) writes:
> On 7 Nov 2000, James Owens wrote:

>>        (uO.volflag == 1 && !isfloppy(nLabelDrive))) /* -$:  no fixed */
>> 
>> If I comment out the second line it works, so either the -$ parameter is
>> not setting u0.volflag, or isfloppy() is returning the wrong result. (I
>> guess).

> The easiest way to know for sure is either to run the program under a
> debugger, put a breakpoint on this line, and print the value of both
> uO.volflag and isfloppy(nLabelDrive); or use printf to show those
> values.

I'm of the printf school of debugging, but I can't remember the command to
convert an integer to a string so I've been using IF . . . PRINTF. . .

The problem is definitely not uO.volflag; this is 1 when the $ parameter
is present, and 0 when it isn't.

If I replace the line with

(uO.volflag == 1 && nLabelDrive > 2)) /* -$, but not A: or B: */

then the program labels the drive if I run from A:\ prompt, and does not
label if I run from C:\ prompt.  So I'm still inclined to suspect
isfloppy(). Thanks for explaining it more fully; I'll study it some more.

But it gets worse. When I run UNZIPSFX with this change and only this
change, the unzip process fails after a few filenames, complaining of a
bad offset. This tempts me to give up.


--

                                     James Owens  ad354 AT Freenet DOT carleton DOT ca
                                     Ottawa, Ontario, Canada

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