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To: Ken Brown <kbrown@cornell.edu>
Subject: Re: Problem building =?UTF-8?Q?cygwin-=33=5F=31=5F=37-release=20t?=
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Date: Sat, 10 Oct 2020 19:26:31 -0700
From: "Kaz Kylheku (Cygwin)" <743-406-3965@kylheku.com>
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On 2020-10-10 12:39, Ken Brown wrote:
> On 10/10/2020 3:22 PM, Kaz Kylheku (Cygwin) via Cygwin wrote:
>>   4896 |   typedef struct _MEM_ADDRESS_REQUIREMENTS {
>>        |                  ^~~~~~~~~~~~~~~~~~~~~~~~~
>> 
>> This looks like a clash between the installed toolchain header and the 
>> one in the winsup tree?
>> 
>> Is this a known problem?
> 
> Yes.  It was caused by a mingw-w64 update and was fixed in commit 
> c1f7c4d1.

Much thanks for that; it got past this stumbling block. After that there 
were
a bunch of GCC-10 fixes I had to find and cherry pick, and it built.