/in/foo.cc: In member function 'Vector3 Matrix3::operator*(const Vector3&) const':
/in/foo.cc:35:15: error: 'const class Vector3' has no member named 'v'
   35 |             v.v[0][0] * v.x + v.v[0][1] * v.y + v.v[0][2] * v.z,
      |               ^
/in/foo.cc:35:33: error: 'const class Vector3' has no member named 'v'
   35 |             v.v[0][0] * v.x + v.v[0][1] * v.y + v.v[0][2] * v.z,
      |                                 ^
/in/foo.cc:35:51: error: 'const class Vector3' has no member named 'v'
   35 |             v.v[0][0] * v.x + v.v[0][1] * v.y + v.v[0][2] * v.z,
      |                                                   ^
/in/foo.cc:36:15: error: 'const class Vector3' has no member named 'v'
   36 |             v.v[1][0] * v.x + v.v[1][1] * v.y + v.v[1][2] * v.z,
      |               ^
/in/foo.cc:36:33: error: 'const class Vector3' has no member named 'v'
   36 |             v.v[1][0] * v.x + v.v[1][1] * v.y + v.v[1][2] * v.z,
      |                                 ^
/in/foo.cc:36:51: error: 'const class Vector3' has no member named 'v'
   36 |             v.v[1][0] * v.x + v.v[1][1] * v.y + v.v[1][2] * v.z,
      |                                                   ^
/in/foo.cc:37:15: error: 'const class Vector3' has no member named 'v'
   37 |             v.v[2][0] * v.x + v.v[2][1] * v.y + v.v[2][2] * v.z
      |               ^
/in/foo.cc:37:33: error: 'const class Vector3' has no member named 'v'
   37 |             v.v[2][0] * v.x + v.v[2][1] * v.y + v.v[2][2] * v.z
      |                                 ^
/in/foo.cc:37:51: error: 'const class Vector3' has no member named 'v'
   37 |             v.v[2][0] * v.x + v.v[2][1] * v.y + v.v[2][2] * v.z
      |                                                   ^