[Bug c++/54581] New: decltype and opaque vector types

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54581

             Bug #: 54581
           Summary: decltype and opaque vector types
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: glisse@gcc.gnu.org


As explained here:

http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01023.html

it would be nice if decltype could remove the opacity from vector types. In
particular:

typedef double vec __attribute__((vector_size(2*sizeof(double))));
extern vec x;
decltype(x<x) y={1,2};

should not complain.