> From: "Theo de Raadt" <[email protected]>
> Date: Sat, 12 Dec 2020 18:10:38 -0700
> 
> Jonathan Gray <[email protected]> wrote:
> 
> > > Index: sys/arch/i386/include/setjmp.h
> > > ===================================================================
> > > RCS file: /mount/openbsd/cvs/src/sys/arch/i386/include/setjmp.h,v
> > > retrieving revision 1.3
> > > diff -u -p -r1.3 setjmp.h
> > > --- sys/arch/i386/include/setjmp.h        6 Dec 2020 15:31:30 -0000       
> > > 1.3
> > > +++ sys/arch/i386/include/setjmp.h        12 Dec 2020 22:04:32 -0000
> > > @@ -13,7 +13,6 @@
> > >  #define _JB_EDI          5
> > >  #define _JB_SIGMASK      6
> > >  #define _JB_SIGFLAG      7
> > > -#define _JB_MXCSR        8
> > > -#define _JB_FCW          9
> > > +#define _JB_FCW          8
> > >  
> > >  #define _JBLEN           10      /* size, in longs, of a jmp_buf */
> > 
> > ok jsg@
> > 
> > While _JBLEN could change to 9 after this it was historically 10 and
> > changing it would break ABI?
> 
> I would rather just leave the word unused.

Yes.  ok kettenis@

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