tests/qapi-schema/struct-base-clash-deep.json

# we check for no duplicate keys with indirect base
{ 'struct': 'Base',
  'data': { 'name': 'str' } }
{ 'struct': 'Mid',
  'base': 'Base',
  'data': { 'value': 'int' } }
{ 'struct': 'Sub',
  'base': 'Mid',
  'data': { '*name': 'str' } }