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Re: rawhide report: 20060215 changes



On Wed, Feb 15, 2006 at 09:47:25PM +0100, Ralf Corsepius wrote:
> > gcc-4.1.0-0.27
> > --------------
> 
> > * Tue Feb 14 2006 Jakub Jelinek <jakub redhat com> 4.1.0-0.26
> > - update from gcc-4_1-branch (-r110903:110978)
> >   - PRs fortran/20861, fortran/20871, fortran/25059, fortran/25070,
> > 	fortran/25083, fortran/25088, fortran/25103, fortran/26038,
> > 	fortran/26074, inline-asm/16194, libfortran/24685,
> > 	libfortran/25425, target/26141, tree-optimization/26258
> > - ABI change - revert to GCC 3.3 and earlier behaviour of
> >   zero sized bitfields in packed structs (Michael Matz, PR middle-end/22275)
> 
> Do I read this correctly - ABI change?

Yes.

> The whole FC5 mass rebuilds were in vain?

No, packed structures containing zero width bitfields are extremely rare.
And if something really cared about the exact layout of those structures,
it wouldn't rely on this, as GCC < 3.4 behavior differed from 3.4/4.0.

	Jakub


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