Zero-intialization made explicit in Tensor::add_to.

ValeevGroup · Jan 15, 2024 · 21d6a7a · 21d6a7a
1 parent 6b78a63
commit 21d6a7a
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/TiledArray/tensor/tensor.h b/src/TiledArray/tensor/tensor.h
@@ -1678,7 +1678,11 @@ class Tensor {
   template <typename Right,
             typename std::enable_if<is_tensor<Right>::value>::type* = nullptr>
   Tensor& add_to(const Right& right) {
-    if (empty()) *this = Tensor{right.range()};
+    if (empty()) {
+      *this = Tensor{right.range()};
+      if constexpr (detail::is_numeric_v<value_type>)
+        std::fill(begin(), end(), value_type{0});
+    }
     return inplace_binary(right, [](value_type& MADNESS_RESTRICT l,
                                     const value_t<Right> r) { l += r; });
   }