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From:	"Jonathan Pryor" <jonpryor AT vt DOT edu>
To:	"Cygwin Mailing List" <cygwin AT sourceware DOT cygnus DOT com>
Subject:	Compiled executable differences between 9x and NT
Date:	Mon, 8 Mar 1999 09:20:54 -0500
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(I would try to look this up on the web page, but 
I'm having trouble connecting to cygnus.com at the
moment...)

What are the *exact* differences between 95 and NT,
as far as the cygwin environment and compiler are
concerned?

I would normally assume that if I stick with the
strict ANSI stuff (console I/O), limited to the
extent so that MSVC can also compile it (no great
reliance on the posix api's), that I should be able
to compile an executable on both 95 and NT and have
it behave the same on both.

Unfortunately, I have a program for which this isn't 
happening.  Under NT, it runs as expected in all 
cases.  Under 95, it's currently causing
a "blue screen" with cygwin egcs-1.1.1, and causes
a "This progam has performed an illegal operation
and will be shut down." message under mingw32.

I get these errors if the executable was compiled
and run under 95, or if the executable was compiled
under NT but run under 95.  (The same executable -- 
compiled under either 95 or NT -- runs fine under
NT.)

As a note, it compiles and runs fine with MSVC6.

Any thoughts as to what could be causing the problem?
Is there anything that is known to break 95 while
working under NT?

Thanks,
 - Jon

(Yes, I probably should try to get the whole source
available, but I'm in the process of trying to clean
it up for public distribution, so it may be awhile...)


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