Gcc10 compilation error:: std::__uniq_ptr_data<ROOT::Experimental::TTaskGroup, std::default_delete<ROOT::Experimental::TTaskGroup>

[adrian_sev]

_ROOT Version: v6.20.02 (well, actually tag v6-20-02-alice7 from https://github.com/alisw/root )
_Platform: Fedora 32 x86_64
_Compiler: gcc (GCC) 10.2.1 20200723 (Red Hat 10.2.1-1)

the error is

[ 81%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoPhysicalNode.cxx.o
In module 'std' imported from input_line_1:1:
/usr/lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/bits/unique_ptr.h:208:12: error: 'std::__uniq_ptr_data<ROOT::Experimental::TTaskGroup, std::default_delete<ROOT::Experimental::TTaskGroup>, true, true>' has different definitions in different modules; definition in module 'std.condition_variable' is here
    struct __uniq_ptr_data : __uniq_ptr_impl<_Tp, _Dp>
           ^
/usr/lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/bits/unique_ptr.h:208:12: note: definition in module 'std.condition_variable' is here
Scanning dependencies of target G__Proof
[ 81%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoPolygon.cxx.o
[ 81%] Building CXX object proof/proof/CMakeFiles/G__Proof.dir/G__Proof.cxx.o
[ 81%] Linking CXX shared library ../../lib/libMatrix.so
[ 81%] Built target Matrix
[ 81%] Generating G__Hist.cxx, ../../lib/Hist.pcm
Error: Error loading the #pragma extra_include.
[ 81%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoRegion.cxx.o
gmake[2]: *** [bindings/pyroot/CMakeFiles/G__PyROOT.dir/build.make:104: bindings/pyroot/G__PyROOT.cxx] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:27340: bindings/pyroot/CMakeFiles/G__PyROOT.dir/all] Error 2
gmake[1]: *** Waiting for unfinished jobs....

full logs can be found here see log file
Is the version too old? is there any newer commit that can be backported?

Thank you!
Adrian

[etejedor]

Hi,

I think this is the same issue as:

https://root-forum.cern.ch/t/fail-to-compile-root-6-20-04-on-fedora-32

which resulted in:

[ROOT-10701] Fail to compile root using gcc 10 - SFTJIRA

The ticket above is closed so I understand this has been fixed in a more recent version (I am not sure which one since the ticket does not specify it).

@oksana @vvassilev do you want to comment?

[vvassilev]

I think the commit is present in 6.20/08 as per https://github.com/root-project/root/pull/5917

Could you bump to that version?

[adrian_sev]

Thanks a lot! I forwarded this information on the ALICE mail-list … let’s see if it’s possible