Added assertion in Pop operator

src/operator/Pop.cpp

@@ -24,6 +24,7 @@ Aidge::Elts_t Aidge::Pop_ProdConso::getNbRequiredData(const Aidge::IOIndex_t inp
     assert(mOp.getRawInput(inputIdx) && "requires valid input");
 
     const Pop_Op& op = dynamic_cast<const Pop_Op&>(mOp);
+    AIDGE_ASSERT(!op.getInput(inputIdx)->empty(), "Pop operator requires known, non-empty, input dims for scheduling. You might have an unresolved data dependency upstream in the computing graph.");
     return Elts_t::DataElts(op.getInput(inputIdx)->size()
         / op.getInput(inputIdx)->dims()[0]);
 }