Fix GCC 6/7 build on APFS (#7696)
Fix GCC 6/7 build on APFS (#7696)


LLNL/spack,mfherbst/spack,mfherbst/spack,tmerrick1/spack,iulian787/spack,mfherbst/spack,tmerrick1/spack,matthiasdiener/spack,EmreAtes/spack,matthiasdiener/spack,tmerrick1/spack,krafczyk/spack,EmreAtes/spack,krafczyk/spack,krafczyk/spack,iulian787/spack,tmerrick1/spack,EmreAtes/spack,EmreAtes/spack,iulian787/spack,LLNL/spack,LLNL/spack,mfherbst/spack,EmreAtes/spack,LLNL/spack,matthiasdiener/spack,matthiasdiener/spack,krafczyk/spack,matthiasdiener/spack,LLNL/spack,iulian787/spack,iulian787/spack,mfherbst/spack,krafczyk/spack,tmerrick1/spack