fix(clientlib): Allow tensor with dimensions equals to 0

compiler/include/concretelang/ClientLib/Types.h

@@ -39,12 +39,10 @@ struct TensorData {
 
   inline size_t length() {
     if (sizes.empty()) {
-      assert(false);
       return 0;
     }
     size_t len = 1;
     for (auto size : sizes) {
-      assert(size > 0);
       len *= size;
     }
     return len;

compiler/lib/ClientLib/EncryptedArguments.cpp

@@ -142,12 +142,12 @@ EncryptedArguments::pushArg(size_t width, const void *data,
   for (size_t size : values_and_sizes.sizes) {
     preparedArgs.push_back((void *)size);
   }
+
   // Set the stride for each dimension, equal to the product of the
   // following dimensions.
   int64_t stride = values_and_sizes.length();
-  // If encrypted +1 set the stride for the lwe size rank
   for (size_t size : values_and_sizes.sizes) {
-    stride /= size;
+    stride = (size == 0 ? 0 : (stride / size));
     preparedArgs.push_back((void *)stride);
   }
   currentPos++;