diff --git a/include/pybind11/numpy.h b/include/pybind11/numpy.h index 5fdbe6df..43f0d57f 100644 --- a/include/pybind11/numpy.h +++ b/include/pybind11/numpy.h @@ -127,7 +127,8 @@ public: // allocate zeroed memory if it hasn't been provided auto buf_info = info; if (!buf_info.ptr) - buf_info.ptr = std::calloc(info.size, info.itemsize); + // always allocate at least 1 element, same way as NumPy does it + buf_info.ptr = std::calloc(std::max(info.size, 1ul), info.itemsize); if (!buf_info.ptr) pybind11_fail("NumPy: failed to allocate memory for buffer"); auto view = memoryview(buf_info);