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Subject:	Re: Updated: w32api-{headers,runtime}-8.0.0-1 (x86/x86_64)
To:	cygwin AT cygwin DOT com
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From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
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Organization:	Systematic Software
Message-ID:	<0c884817-574a-e171-9bb5-b8d313a5f6ee@SystematicSw.ab.ca>
Date:	Tue, 22 Sep 2020 22:44:09 -0600
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This is a multi-part message in MIME format.
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On 2020-09-22 22:17, Brian Inglis wrote:
> On 2020-09-22 16:10, Brian Inglis wrote:
>> On 2020-09-18 23:19, JonY via Cygwin-announce wrote:
>>> Now released for both 32bit and 64bit Cygwin:
>>>
>>> w32api-headers-8.0.0-1
>>> w32api-runtime-8.0.0-1
>>>
>>> Based on mingw-w64-v8.0.0.
> 
> Sorry, ambigous - to clarify: may be a definition conflict between updated
> headers rebuilding cygwin both 32 and 64 just after latest updates: see attached log.
> Cygwin both 32 and 64 builds worked without any problems just before the latest
> updates.

Tad confusing log messages, but it appears the actual issue may not be a
conflict to do with PVOID, but with PMEM_EXTENDED_PARAMETER between the below:

$ fgrep -wB12 PMEM_EXTENDED_PARAMETER /usr/include/w32api/winnt.h
  typedef struct DECLSPEC_ALIGN(8) MEM_EXTENDED_PARAMETER {
    __C89_NAMELESS struct {
        DWORD64 Type : MEM_EXTENDED_PARAMETER_TYPE_BITS;
        DWORD64 Reserved : 64 - MEM_EXTENDED_PARAMETER_TYPE_BITS;
    };
    __C89_NAMELESS union {
        DWORD64 ULong64;
        PVOID Pointer;
        SIZE_T Size;
        HANDLE Handle;
        DWORD ULong;
    };
  } MEM_EXTENDED_PARAMETER, *PMEM_EXTENDED_PARAMETER;
$ fgrep -wA8 PMEM_EXTENDED_PARAMETER winsup/utils/cygpath.cc
#define PMEM_EXTENDED_PARAMETER PVOID
#include <windows.h>
#include <userenv.h>
#include <shlobj.h>
#include <ntdef.h>
#include <ntdll.h>

#include "wide_path.h"
#include "loadlib.h"

It seems likely that we could perhaps just remove the conflicting #define, but
without some idea of the original intent and its impact, and a good cygpath
regression test suite, that could perhaps be a rash decision.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
[Data in binary units and prefixes, physical quantities in SI.]

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