Compilation issue for StFwdUtils/StFwdAnalysisMaker.cxx with root6 (SL24x)

[genevb]

Executing the following in an empty directory on SDCC...

    unsetenv NODEBUG
    setup 64b
    starver SL24x config/v0.3.0-rhel7-root6.24.06
    mkdir StRoot
    cp -R $STAR/StRoot/StFwdUtils ./StRoot/
    sed -i 's=//gDirectory=gDirectory=' StRoot/StFwdUtils/StFwdAnalysisMaker.cxx
    cons

....results in the below error, which is why (for now) I have commented out the line with gDirectory in SL24x (probably affecting the use of StFwdAnalysisMaker there)...

g++ -m64 -fPIC -pipe -Wall -Woverloaded-virtual -std=c++0x -Wno-long-long -pthread -g -Dsl73_x8664_gcc485 -D__ROOT__ -DNEW_DAQ_READER -I. -IStRoot -I.sl73_x8664_gcc485/include -I/afs/rhic.bnl.gov/star/packages/SL24x -I/afs/rhic.bnl.gov/star/packages/SL24x/StRoot -I/afs/rhic.bnl.gov/star/packages/SL24x/.sl73_x8664_gcc485/include -I/cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/root-6.24.06-xyzh2kixt4wrnkbrfsmdjxufnc27t74e/include -I/cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/vmc-1-0-p3-idwq5npxqw22beaehvep4zhe7kyefb44/include/vmc -c .sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.cxx -o .sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.o
.sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.cxx: In member function 'virtual int StFwdAnalysisMaker::Finish()':
.sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.cxx:42:20: error: use of deleted function 'ROOT::Internal::TDirectoryAtomicAdapter& ROOT::Internal::TDirectoryAtomicAdapter::operator=(const ROOT::Internal::TDirectoryAtomicAdapter&)'
         gDirectory = prevDir;
                    ^
In file included from /cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/root-6.24.06-xyzh2kixt4wrnkbrfsmdjxufnc27t74e/include/TDirectoryFile.h:25:0,
                 from /cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/root-6.24.06-xyzh2kixt4wrnkbrfsmdjxufnc27t74e/include/TFile.h:28,
                 from /afs/rhic.bnl.gov/star/packages/SL24x/.sl73_x8664_gcc485/include/StMaker.h:20,
                 from /afs/rhic.bnl.gov/star/packages/SL24x/StRoot/StMuDSTMaker/COMMON/StMuDstMaker.h:15,
                 from .sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.cxx:15:
/cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/root-6.24.06-xyzh2kixt4wrnkbrfsmdjxufnc27t74e/include/TDirectory.h:247:11: note: 'ROOT::Internal::TDirectoryAtomicAdapter& ROOT::Internal::TDirectoryAtomicAdapter::operator=(const ROOT::Internal::TDirectoryAtomicAdapter&)' is implicitly deleted because the default definition would be ill-formed:
    struct TDirectoryAtomicAdapter {
           ^
/cvmfs/star.sdcc.bnl.gov/star-spack/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/root-6.24.06-xyzh2kixt4wrnkbrfsmdjxufnc27t74e/include/TDirectory.h:247:11: error: non-static reference member 'std::atomic<TDirectory*>& ROOT::Internal::TDirectoryAtomicAdapter::fValue', can't use default assignment operator
cons: *** [.sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.o] Error 1
cons: errors constructing .sl73_x8664_gcc485/obj/StRoot/StFwdUtils/StFwdAnalysisMaker.o

-Gene

[genevb]

Just a ping here. I think this remains un-addressed.

[plexoos]

I can take a look if Daniel does not mind