A GArray of enums may not be returned correctly

Submitted by Mike Gorse

Description

When _pygi_argument_to_object sees an array, it fetches the size of an item and then calls memcpy to copy an item from the array into a GIArgument. It then recurses, and, if the subtype is an enum, it assumes that the GIArgument holds a long. This can cause problems on 64-bit systems for instance if the array contained ints rather than longs, since only the first four bytes of the GIArgument data were ever initialized.

Edited Jan 19, 2021 by Emmanuele Bassi