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Re: [Qemu-trivial] [Qemu-devel] [PATCH] trace/simple: Fix warning and wr

From: Stefan Weil
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH] trace/simple: Fix warning and wrong trace file name for MinGW
Date: Mon, 28 Sep 2015 21:55:09 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.8.0

Am 28.09.2015 um 17:50 schrieb Eric Blake:
> On 09/28/2015 09:19 AM, Stefan Weil wrote:
>> Am 28.09.2015 um 17:06 schrieb Eric Blake:
>>> On 09/28/2015 02:26 AM, Stefan Weil wrote:
>>>>> Can you explain why osdep.h's
>>>>>     #define FMT_pid "%" PRId64
>>>>> is appropriate for Windows?
>>>> Don't blame me for any strangeness which you might find in Windows. :-)
>>>> Mingw-w64 sys/types.h defines pid_t to be either an int or an __int64.
>>>> FMT_pid must match these definitions.
>>>> But getpid returns an int, not a pid_t...
>>> Can we 1) file a bug against mingw for their buggy getpid(), and 2)
>>> write a wrapper that makes getpid() always return pid_t in the meantime?
>> 1) No, because MinGW and Mingw-w64 use the same declaration as MS.
>> They cannot change that, of course. Nor will MS correct this after many
>> years, for obvious reasons.
> If getpid() always returns int, then defining pid_t to __int64 feels
> wrong.  I still claim its a mingw bug to have a mismatch in types.

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