ppc64le: error: declaration does not declare anything

[Sandro Mani]

Hi

I'm having some difficulties understanding the following error on 
ppc64le (scratch build [1], build log [2]):

PackMath.h:

191  template<> inline v4f  ei_pset1(const float& from)
192  {
193    // Taken from 
http://developer.apple.com/hardwaredrivers/ve/alignment.html
194    float __attribute__(aligned(16)) af[4];
195    af[0] = from;
196    v4f vc = vec_ld(0, af);
197    vc = vec_splat(vc, 0);
198    return vc;
199  }


/builddir/build/BUILD/eigen-eigen-b23437e61a07/Eigen/src/Core/arch/AltiVec/PacketMath.h:
In function 'typename Eigen::ei_packet_traits<T>::type Eigen::ei_pset1(const
Scalar&) [with Scalar = float; typename Eigen::ei_packet_traits<T>::type =
__vector(4) float]':
/builddir/build/BUILD/eigen-eigen-b23437e61a07/Eigen/src/Core/arch/AltiVec/PacketMath.h:194:40:
error: declaration does not declare anything [-fpermissive]
    float __attribute__(aligned(16)) af[4];
                                         ^
/builddir/build/BUILD/eigen-eigen-b23437e61a07/Eigen/src/Core/arch/AltiVec/PacketMath.h:194:3:
error: expected primary-expression before 'float'
    float __attribute__(aligned(16)) af[4];
    ^~~~~
/builddir/build/BUILD/eigen-eigen-b23437e61a07/Eigen/src/Core/arch/AltiVec/PacketMath.h:195:3:
error: 'af' was not declared in this scope
    af[0] = from;


The build completes on x86_64 and i686 and possibly others. Any ideas?

Thanks
Sandro


[1] https://koji.fedoraproject.org/koji/taskinfo?taskID=16927043
[2] https://koji.fedoraproject.org/koji/getfile?taskID=16927051&name=buil...

[Jakub Jelinek]

On Sat, Dec 17, 2016 at 04:03:22PM +0100, Sandro Mani wrote:
>  Hi
>  
>  I'm having some difficulties understanding the following error on ppc64le
>  (scratch build [1], build log [2]):
>  
>  PackMath.h:
>  
>  191  template<> inline v4f  ei_pset1(const float& from)
>  192  {
>  193    // Taken from
>  http://developer.apple.com/hardwaredrivers/ve/alignment.html
>  194    float __attribute__(aligned(16)) af[4]; 
That is invalid syntax, it should be actually
  float __attribute__((aligned(16))) af[4];
or
  float af[4] __attribute__((aligned(16)));
Though I'm getting very different error from the one you've listed.

	Jakub

[Sandro Mani]

On 17.12.2016 16:09, Jakub Jelinek wrote:
>  On Sat, Dec 17, 2016 at 04:03:22PM +0100, Sandro Mani wrote:
> > Hi
> >
> > I'm having some difficulties understanding the following error on ppc64le
> > (scratch build [1], build log [2]):
> >
> > PackMath.h:
> >
> > 191  template<> inline v4f  ei_pset1(const float& from)
> > 192  {
> > 193    // Taken from
> > http://developer.apple.com/hardwaredrivers/ve/alignment.html
> > 194    float __attribute__(aligned(16)) af[4];
>  That is invalid syntax, it should be actually
>     float __attribute__((aligned(16))) af[4];
>  or
>     float af[4] __attribute__((aligned(16)));
>  Though I'm getting very different error from the one you've listed. 
Adding
a pair of parenthesis got it building, thanks!

Sandro