Haralampos Gavriilidis created ARROW-2457: ---------------------------------------------
Summary: garrow_array_builder_append_values() won't work for large arrays Key: ARROW-2457 URL: https://issues.apache.org/jira/browse/ARROW-2457 Project: Apache Arrow Issue Type: Bug Components: C, C++, GLib Affects Versions: 0.9.0, 0.8.0 Reporter: Haralampos Gavriilidis I am using garrow_array_builder_append_values() to transform a native C array to an Arrow array, without calling arrow_array_builder_append multiple times. When calling garrow_array_builder_append_values() in array-builder.cpp with following signature: {code:java} garrow_array_builder_append_values(GArrowArrayBuilder *builder, const VALUE *values, gint64 values_length, const gboolean *is_valids, gint64 is_valids_length, GError **error, const gchar *context) {code} it will fail for large arrays. This is probably happening because the is_valids array is copied to the valid_bytes array (of different type), for which the memory is allocated on the stack, and not on the heap, like shown on the snippet below: {code:java} uint8_t valid_bytes[is_valids_length]; for (gint64 i = 0; i < is_valids_length; ++i){ valid_bytes[i] = is_valids[i]; } {code} A way to avoid this problem would be to allocate memory for the valid_bytes array using malloc() or something similar. Is this behavior intended, maybe because no large arrays should be handed over to that function, or it is rather a bug? -- This message was sent by Atlassian JIRA (v7.6.3#76005)