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From: "neozeed (neozeed AT superglobalmegacorp DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Death of DJGPP support on Win10 32 bit? [WAS: Re: Max value of
 DpmiLimit registry setting in Windows 10 32 bit]
Date: Fri, 06 Apr 2018 17:10:36 +0800
Organization: Qemu OS/2
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Message-ID: <20180406-091036.863.0@neozeed.news.eternal-september.org>
References: <xnd0zpwjtr DOT fsf AT delorie DOT com>
 <c5ddafe3-5a20-79eb-bd9b-1794470021e9 AT iki DOT fi> <83sh8c47ey DOT fsf AT gnu DOT org> <e8a9925b-8ed9-9542-51bb-7c153f9573eb AT iki DOT fi> <83r2nw44a6 DOT fsf AT gnu DOT org>
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

In article <83r2nw44a6 DOT fsf AT gnu DOT org>, djgpp AT delorie DOT com says...
>> From: "Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via djgpp AT delorie DOT com]" 
<djgpp AT delorie DOT com>
>> Date: Tue, 3 Apr 2018 19:27:57 +0300
>> 
>> starting under GDB (surprising but it still works)
>
>Running a program inside GDB does not created nested DPMI clients,
>because GDB just longjmp's to the debuggee's code.
>
>> (gdb) c
>> Continuing.
>> ret=0
>> Exiting due to signal SIGSEGV
>> Stack Fault at eip=00000a11
>> eax=00010001 ebx=00040080 ecx=0002d400 edx=000007bf esi=00007022 
edi=00017012
>> ebp=000a773a esp=000a773a program=d:\Test\7\runpgm.exe
>> cs: sel=00cf  base=000d39f0  limit=00000db0
>> ds: sel=00b7  base=000cc100  limit=0000ffff
>> es: sel=0040  invalid
>> fs: sel=0000
>> gs: sel=0000
>> ss: sel=00b7  base=000cc100  limit=0000ffff
>> App stack: [000a8eb0..00028eb4]  Exceptn stack: [00028de0..00026ea0]
>
>Looks like segment registers are all wrong?
>
>Charles, are you still there?  Can you tell what's going on here?

If the NTVDM can't nest properly, isn't it easier to just use a Win32 native 
version of GCC, and keep your CC1/CPP/GAS/LD native?

Just a though.