Dear all,
I’m upgrading to PETSc 3.7.4 and I am now compiling the git version of libMesh.
On my workstation (using gcc 5.4 and openmpi 2.0.0) I get a compilation error 

/not_backed_up/srossi/TPL/libmesh/libmesh-git/src/reduced_basis/rb_eim_assembly.C:
 In member function ‘virtual void 
libMesh::RBEIMAssembly::evaluate_basis_function(unsigned int, const 
libMesh::Elem&, const libMesh::QBase&, std::vector<double>&)’:
/not_backed_up/srossi/TPL/libmesh/libmesh-git/src/reduced_basis/rb_eim_assembly.C:72:14:
 error: no match for ‘operator!=’ (operand types are 
‘libMesh::AutoPtr<libMesh::QBase>’ and ‘const libmesh_nullptr_t’)
   if (_qrule != libmesh_nullptr)


I solved the error just by changing 
   if (_qrule != libmesh_nullptr)   =>    if (_qrule.get() != libmesh_nullptr) 

With this change it compiles fine, but I since ’m not using the rb classes and 
I cannot say if this is the best  way to solve this problem.

Thanks,
Simone





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