Alberto, My guess is that in your class AliITSneuron, you use a forward declaration for TVector3, instead of #include "TVector3" Rene Brun Alberto Pulvirenti wrote: > > Dear all, > > I encountered some problems when creating a class of mine. > It should inherit from `TVector3', where (as I saw) there isn't any > default constructor (say, without arguments); > > So, when compiling in the AliRoot systm, when compiling ITSCint.cxx I > got the message: > > In file included from ITSCint.h:95, > from ITSCint.cxx:5: > AliITSneuronV3.h:6: base class `TVector3' has incomplete type > make: *** [tgt_Linux/ITSCint.o] Error 1 > > What's the matter? Maybe I may not create an heir of TVector3? > > Alberto
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