[PATCH 2/2] time: Add padding for the timespec if required

[Lukasz Majewski]

Hi Joseph,

> On Wed, 25 Sep 2019, Lukasz Majewski wrote:
> 
> > > > > +#if __WORDSIZE == 64 \
> > > > > +  || (defined __SYSCALL_WORDSIZE && __SYSCALL_WORDSIZE ==
> > > > > 64) || \
> > > > > +  __TIMESIZE == 32    
> >          ^^^^^^^^^^^^^^^^^ - this may be a bit problematic as 32 bit
> >          systems (with __TIMESIZE == 32) gain support for 64 bit
> > time (so the Y2038 problem is solved).
> > 
> > 	 Those systems also would require padding (the code below).
> > 
> > 	 However, I do guess that allowing such systems to have the
> > 	 extra padding after this patch (by removing __TIMESIZE==32
> > 	 condition) is not an option for now (and shall be done in
> > the same commit which introduces -D_TIME_BITS=64 support to glibc)
> > 	 ?  
> 
> Yes, support for _TIME_BITS=64 should end up as one large commit that
> adds all the header support, all the function exports and symbol
> versions, all the ABI baseline updates and all the documentation.
> (It may well be split into several pieces to review, but should still
> end up as one commit to avoid intermediate states where some
> interfaces have _TIME_BITS=64 support and some don't, so compiling
> with _TIME_BITS=64 gives a broken ABI.)
> 

Ok. Thanks for clarification.


Best regards,

Lukasz Majewski

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