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Date:	Wed, 29 Jan 2014 20:33:26 +0100
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: second call to mmap() results in error
References:	<01a801cf1cfa$77957900$66c06b00$@lbmsys.com> <20140129181250 DOT GW2821 AT calimero DOT vinschen DOT de>
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On 29/01/2014 19:12, Corinna Vinschen wrote:
> On Jan 29 09:00, Steven Bardwell wrote:
>> My application needs several areas of shared memory, and I am getting an
>> error ("No such device") on the second call to mmap(). The first call works
>> fine.
>>

>>
>> The problem does not seem to depend on the size of the requested memory. The
>> program
>> always returns with "Couldn't map memory for /block2 (No such device)"
>
> Try stracing it.  I tried it on the latest Cygwin from CVS as well
> as on Cygwin 1.7.27 (32 bit versions) and it works fine for me.

just as info also on my
Windows 7 Professional Ver 6.1 Build 7601 Service Pack 1

CYGWIN_NT-6.1-WOW64  1.7.28s(0.271/5/3) 20140128 10:55:59 i686 Cygwin
the program fails (No such device)

and it segfaults on 64 bit
CYGWIN_NT-6.1 1.7.28s(0.271/5/3) 20140128 10:55:59 x86_64 Cygwin
attached the stackdump

>
> Your testcase is missing an ftruncate or two., btw.  I guess you're
> aware of that and just dropped them to get a the simple testcase.
>
>
> Corinna


Marco

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