This is due to integers being read as 64 bits, so it fails (in many places) on 32 bit systems. Fixed in master:
commit 31c9dd212156afbb2422188cb59ee8acb5a0719f Author: Robert Ancell <email address hidden> Date: Wed Aug 30 14:16:14 2017 +1200
Fix GObject arguments not working on 32 bit systems
This is due to integers being read as 64 bits, so it fails (in many places) on 32 bit systems. Fixed in master:
commit 31c9dd212156afb b2422188cb59ee8 acb5a0719f
Author: Robert Ancell <email address hidden>
Date: Wed Aug 30 14:16:14 2017 +1200
Fix GObject arguments not working on 32 bit systems