Apply fixits

src/include/rtg/operators.hpp

@@ -431,13 +431,13 @@ struct broadcast
         auto shape1         = inputs.at(1);
         auto shape0_lens    = shape0.lens();
         auto shape1_lens    = shape1.lens();
-        auto shape0_strides = shape0.lens();
+        const auto& shape0_strides = shape0.lens();
         auto shape1_strides = shape1.lens();
         if(std::all_of(shape0_lens.cbegin(), shape1_lens.cend(), [&](auto x) { return x == 1; }))
         {
             if(axis != 0)
                 RTG_THROW("when broadcasting tensor of size 1, axis should be 0");
-            std::vector<size_t> bcast_shape_lens = shape0_lens;
+            const std::vector<size_t>& bcast_shape_lens = shape0_lens;
             std::vector<size_t> bcast_shape_strides(bcast_shape_lens.size(), 0);
             return {t, bcast_shape_lens, bcast_shape_strides};
         }

test/cpu_ops_test.cpp

@@ -13,7 +13,7 @@ void fred()
     rtg::shape shape1{rtg::shape::float_type, {4, 3}};
     std::vector<size_t> shape0_lens    = shape0.lens();
     std::vector<size_t> shape1_lens    = shape1.lens();
-    std::vector<size_t> shape0_strides = shape0.strides();
+    const std::vector<size_t>& shape0_strides = shape0.strides();
     std::vector<size_t> shape1_strides = shape1.strides();
     for(size_t i = 0; i < shape1.lens().size(); i++)
     {