Warning in CartBuffer.tpp

[psychocoderHPC]

The new pull #773 request bring up a warning .

src/libPMacc/include/cuSTL/container/CartBuffer.tpp: In member function ‘virtual void picongpu::TotalDivJ::notify(uint32_t)’:
src/libPMacc/include/cuSTL/container/CartBuffer.tpp:155:1: warning: ‘fieldJ.PMacc::container::CartBuffer<PMacc::math::Vector<float, 3>, 3, PMacc::allocator::EmptyAllocator, mpl_::void_, mpl_::void_>::refCount’ may be used uninitialized in this function [-Wuninitialized]
src/picongpu/include/plugins/TotalDivJ.tpp:82:69: note: ‘fieldJ.PMacc::container::CartBuffer<PMacc::math::Vector<float, 3>, 3, PMacc::allocator::EmptyAllocator, mpl_::void_, mpl_::void_>::refCount’ was declared here
In file included from tmpxft_0000a156_00000000-3_main.cudafe1.stub.c:1:0:
At global scope:
cc1plus: warning: unrecognized command line option "-Wno-unused-local-typedefs" [enabled by default]

I don't know why this warning was not shown before, but PseudoBuffer call only the empty default constructor of CartBuffer. In this case member variables of CartBuffer like refCount were not initialized. If so it can create NULL pointer exceptions or destroy the program stack.

[ax3l]

@Heikman the first 3 lines are relevant, the warning -Wno-unused-local-typedefs is a work around for a FindCUDA.cmake bug and only occurs on old gnu compilers.

[heikoburau]

I just saw that this is the same issue as #94. We can fix it by removing the TotalDivJ plugin.

[ax3l]

Closed as duplicate of #94