private field 'm_componentNames' is not used

[cj215]

Describe the bug
Compilation error in file GEOS/src/coreComponents/constitutive/fluid/multifluid/compositional/models/ComponentProperties.hpp:130:24 possibly caused by this commit #2799

In file included from /Users/clem/Documents/GitHub/GEOS/src/coreComponents/constitutive/fluid/multifluid/PVTDriver.cpp:24:
In file included from /Users/clem/Documents/GitHub/GEOS/src/coreComponents/constitutive/fluid/multifluid/MultiFluidSelector.hpp:30:
In file included from /Users/clem/Documents/GitHub/GEOS/src/coreComponents/constitutive/fluid/multifluid/compositional/CompositionalMultiphaseFluid.hpp:22:
In file included from /Users/clem/Documents/GitHub/GEOS/src/coreComponents/constitutive/fluid/multifluid/compositional/CompositionalMultiphaseFluidUpdates.hpp:22:
/Users/clem/Documents/GitHub/GEOS/src/coreComponents/constitutive/fluid/multifluid/compositional/models/ComponentProperties.hpp:130:24: error: private field 'm_componentNames' is not used [-Werror,-Wunused-private-field]
  string_array const & m_componentNames;
                       ^
1 error generated.
make[2]: *** [coreComponents/constitutive/CMakeFiles/constitutive.dir/fluid/multifluid/PVTDriver.cpp.o] Error 1
make[1]: *** [coreComponents/constitutive/CMakeFiles/constitutive.dir/all] Error 2
make: *** [all] Error 2]

To Reproduce
Building GEOS on macOS or Ubuntu 18.04 (where I had the error)

Expected behavior
Compilation fails

Platform

• Machine macOS or Ubuntu 18.04
• Compiler: Apple clang version 14.0.3
• GEOSX commit a1fd561

[TotoGaz]

What is your compiler on ubuntu? Are you compiling in Release or Debug mode? (or both?)

[cj215]

On Ubuntu clang version 6.0.0-1ubuntu2 --> Quite old and can't be updated unless I update from 18.04 to 22.04 hence I went on macOS to avoid doing that

I am compiling in Release mode, I have not tried Debug

[TotoGaz]

Is the warning is legitimate?

[cj215]

Thanks, this has removed the error and promted another one. The error is quite similar on both macOS and Ubuntu, I am going to be looking into this in the next few days
macOs error.txt
Ubuntu 18_04 error.txt