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Date: Sat, 24 Oct 2015 11:46:24 -0700
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Subject: Re: DJGPP v2.05 and Windows 10
From: "Louis Santillan (lpsantil AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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Andris, is it possible that you have a bad memory chip?  Maybe
something in 4.x, 5.x, 6.x gcc grows the memory image into the bad
pages while 3.x does not and/or does utilize (read/write) those bad
pages.

On Sat, Oct 24, 2015 at 11:28 AM, Andris Pavenis
(andris DOT pavenis AT iki DOT fi) [via djgpp AT delorie DOT com] <djgpp AT delorie DOT com>
wrote:
> Did some additional tests on WIndows 10.
>
> I'm getting random compile failures with gcc-4.9.3, gcc4.5.2 and gcc 6.0.0
> 20151018 experimental (last development version I built for DJGPP).
> Running
>
> echo '#include <iostream>" | gcc -E -dD -x c++ -
>
> in loop and comparing outputs is sufficient for detecting random corruption.
> I have not succeeded to find why it happens and how to workaround that.
> Additionally I'm also getting random failures when trying to repeatedly
> compile same preprocessed C++ file.
>
> The situation is however not completely hopeless:
> Installed gcc-3.4.6 and bootstrapped the same gcc version (3.4.6) without
> problems under Windows 10. No random gcc failures observed.
>
> So some difference (or differences) between gcc-3.4.6 and recent version
> cause problems.
> Some suspects:
> - change to C++ as implementation language
> - noticeable increase of size of executables and resources required by them
>
> Andris
>
>
>
>
>