diff --git a/modules/core/src/matrix_transform.cpp b/modules/core/src/matrix_transform.cpp index fd9485d271..309d8d7ec2 100644 --- a/modules/core/src/matrix_transform.cpp +++ b/modules/core/src/matrix_transform.cpp @@ -1335,6 +1335,8 @@ void broadcast(InputArray _src, InputArray _shape, OutputArray _dst) { #undef OPENCV_CORE_BROADCAST_LOOP } } else { + if (dst.total() == 0) + return; // initial copy (src to dst) std::vector step_src{src.step.p, src.step.p + dims_src}; if (step_src.size() < static_cast(dims_shape)) { diff --git a/modules/core/test/test_arithm.cpp b/modules/core/test/test_arithm.cpp index 7eb642b51d..ffe6ead18e 100644 --- a/modules/core/test/test_arithm.cpp +++ b/modules/core/test/test_arithm.cpp @@ -2628,6 +2628,23 @@ TEST(BroadcastTo, basic) { broadcast(_src, shape, dst); fn_verify(ref, dst); } + + { + std::vector shape{1, 0}; + std::vector data; + Mat zero_src(static_cast(shape.size()), shape.data(), CV_32FC1, data.data()); + + std::vector target_shape{3, 0}; + Mat dst; + + broadcast(zero_src, target_shape, dst); + + EXPECT_EQ(dst.dims, 2); + EXPECT_EQ(dst.size[0], 3); + EXPECT_EQ(dst.size[1], 0); + EXPECT_EQ(dst.total(), 0u); + } + } TEST(Core_minMaxIdx, regression_9207_2)