[Bug c++/86477] New: failure binding reference to vector element

[zhonghao at pku dot org.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86477

            Bug ID: 86477
           Summary: failure binding reference to vector element
           Product: gcc
           Version: 8.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhonghao at pku dot org.cn
  Target Milestone: ---

The code is as follows:

typedef __attribute__((ext_vector_type(4))) int vi4;
const int &r = vi4(1).x;

g++ rejects it:

error: request for member 'x' in '1', which is of non-class type 'vi4' {aka
'int'}
 const int &r = vi4(1).x;

clang++ accepts the code. It looks like well-formed, right?