True enough.  In that case, would be acceptable to match by architecture and 
skip the import on arm?

> On Aug 19, 2016, at 5:56 PM, Pierre Habouzit <pie...@habouzit.net> wrote:
> 
> the include was added to dispatch specifically to allow dispatch_io to build 
> on intel so your patch I think would break Intel.
> 
> I think the general problem is likely that glibc is not module friendly today.
> 
> -Pierre
> 
>> On Aug 19, 2016, at 11:53 AM, William Dillon via swift-corelibs-dev 
>> <swift-corelibs-dev@swift.org <mailto:swift-corelibs-dev@swift.org>> wrote:
>> 
>> Hi all,
>> 
>> In corelibs-foundation project we've been using a patch based on 
>> https://github.com/apple/swift-corelibs-foundation/pull/399/files 
>> <https://github.com/apple/swift-corelibs-foundation/pull/399/files> for 
>> quite some time (summary: remove #include <stdio.h>).  The PR hasn't gotten 
>> any where for various reasons.  Currently, I've gotten libdispatch working 
>> on arm, but it requires a fix that's essentially identical.  It is part of a 
>> PR available here: 
>> https://github.com/apple/swift-corelibs-libdispatch/pull/155 
>> <https://github.com/apple/swift-corelibs-libdispatch/pull/155>
>> 
>> I'd like to get this moving forward in both cases, and I'd like to bring it 
>> to the list.  What exactly is stdio.h bringing in?  I realize the comment 
>> identifies __off_t, but at least on arm that's being provided elsewhere.  
>> Furthermore, __off_t is defined in several places.
>> 
>> Are there any suggestions for what a satisfactory solution would be to 
>> address the duplicate definition of va_list on arm that does not negatively 
>> impact other platforms?
>> 
>> Thanks,
>> - Will
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> 

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