[MacPorts] #69436: libjxl fails on 10.6 Snow Leopard - onstexpr function never produces a constant expression [-Winvalid-constexpr]

[MacPorts]

#69436: libjxl fails on 10.6 Snow Leopard - onstexpr function never produces a
constant expression [-Winvalid-constexpr]
-----------------------+--------------------------
  Reporter:  rmottola  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  snow leopard
      Port:  libjxl    |
-----------------------+--------------------------

Comment (by rmottola):

 GCC confirms the same error.


 {{{
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_libjxl/libjxl/work/libjxl-0.10.1/lib/jxl/coeff_order.h:35:41:
 error: call to non-'constexpr' function 'const std::__1::array<_Tp,
 _Size>::value_type& std::__1::array<_Tp, _Size>::operator[](size_type)
 const [with _Tp = long unsigned int; long unsigned int _Size = 40;
 const_reference = const long unsigned int&; size_type = long unsigned
 int]'
    35 |   return kCoeffOrderOffset[3 * order + c] * kDCTBlockSize;

 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/69436#comment:1>
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