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Message-ID: <52827878.4030501@w5pny.com>
Date: Tue, 12 Nov 2013 11:50:32 -0700
From: Harry G McGavran Jr <w5pny AT w5pny DOT com>
Reply-To: w5pny AT w5pny DOT com
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To: cygwin AT cygwin DOT com
Subject: Re: Problem with latest setup-x86.exe
References: <52826B3B DOT 8030909 AT w5pny DOT com>
In-Reply-To: <52826B3B.8030909@w5pny.com>
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>On 11/12/2013 10:54 AM, Harry G McGavran Jr wrote:
>> On only one of my Windows 7 machines the latest setup-x86.exe
>> works but always exits with an Access Violation.
>> 
>> So, I downloaded the source to setup and built it.
>> 
>> But in order to make the build work, I had to remove -Werror
>> from the Makefile and add a definition for ARRAYSIZE to main.cc.
>> 
>> The fix to the Access violation was to remove an extra "_" in
>> the code for the argv handling in main.cc
>> 

On Tue, 12 Nov 2013 13:31:31 -0500, Christopher Faylor wrote:
>I appreciate your looking at the source code but given what you changed,
>I don't understand how what you did would fix that.  If your changes
>were really necessary then something would have to be seriously wrong
>with mscvrt handling of argv strings.  That points to a problem on
>your system, not in the code.

Perhaps, but I would have no idea how to figure out problems with mscvrt.
I found the problem by just using gdb on the setup.exe built
without the __argv fix.  __argv was always a null pointer.
(Since __argv seems to be a definition, I always had to look
at the results of invoking __argv when using gdb).
When looking at how _argv was handled, it looked like that was
the thing to use, so when I tried that, the pointers were all fine.
So, if in fact the original code is correct, I don't know how to
find out what changed in mscvrt.  Previous versions of setup-x86
seem not to have this problem for some reason.


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