Impossible to access product when in multicompany for child company admin

[Antoine(OpenERP)]

Working on 6.1 server. Problem appears on web and gtk client.

Create a DB without demo data, create 1 company, child of the main company. Create also 2 additional users, each one responsible and linked to one company.

Try to access the product list view with the admin of the child company -> bug:

Environment Information :
System : Linux-3.0.0-17-generic-i686-with-Ubuntu-11.10-oneiric
OS Name : posix
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
Operating System Release : 3.0.0-17-generic
Operating System Version : #30-Ubuntu SMP Thu Mar 8 17:34:21 UTC 2012
Operating System Architecture : 32bit
Operating System Locale : en_US.UTF-8
Python Version : 2.7.2+
OpenERP-Client Version : 6.1.1
Last revision No. & ID :2058 launchpad_translations_on_behalf_of_openerp-20120418091309-h2j9kxghuoa867f2
Traceback (most recent call last):
  File "/home/antoine/source/server/6.1/openerp/wsgi/core.py", line 79, in xmlrpc_return
    result = openerp.netsvc.dispatch_rpc(service, method, params)
  File "/home/antoine/source/server/6.1/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/home/antoine/source/server/6.1/openerp/service/web_services.py", line 586, in dispatch
    res = fn(db, uid, *params)
  File "/home/antoine/source/server/6.1/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/antoine/source/server/6.1/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/antoine/source/addons/6.1/audittrail/audittrail.py", line 495, in execute_cr
    return fct_src(cr, uid, model, method, *args)
  File "/home/antoine/source/server/6.1/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/antoine/source/server/6.1/openerp/osv/orm.py", line 3406, in read
    result = self._read_flat(cr, user, select, fields, context, load)
  File "/home/antoine/source/server/6.1/openerp/osv/orm.py", line 3517, in _read_flat
    res2 = self._columns[val[0]].get(cr, self, ids, val, user, context=context, values=res)
  File "/home/antoine/source/server/6.1/openerp/osv/fields.py", line 1132, in get
    result = self._fnct(obj, cr, uid, ids, name, self._arg, context)
  File "/home/antoine/source/addons/6.1/stock/product.py", line 328, in _product_available
    stock = self.get_product_available(cr, uid, ids, context=c)
  File "/home/antoine/source/addons/6.1/stock/product.py", line 222, in get_product_available
    child_location_ids = location_obj.search(cr, uid, [('location_id', 'child_of', location_ids)])
  File "/home/antoine/source/server/6.1/openerp/osv/orm.py", line 2241, in search
    return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
  File "/home/antoine/source/server/6.1/openerp/osv/orm.py", line 4571, in _search
    query = self._where_calc(cr, user, args, context=context)
  File "/home/antoine/source/server/6.1/openerp/osv/orm.py", line 4422, in _where_calc
    where_clause, where_params = e.to_sql()
  File "/home/antoine/source/server/6.1/openerp/osv/expression.py", line 795, in to_sql
    q2 = stack.pop()
IndexError: pop from empty list

[awu-openerp (awu)]

Same goes for Kanban view.

[ajay javiya (OpenERP) (aja-openerp)]

Hello,
We have traced the issue out end and found that their are two cases :
1) Configuration Issue as Child company Warehouse Missing, If we add Warehouse for the company, It work perfect.
2) Technically while calculating field : qty_available, virtual_available, incoming_qty and outgoing_qty if their is no warehouse then it has to be handelled from addons.

and Their is already similar bug is posted (Bug lp#921561) and assigned to "OpenERP R&D Addons Team 2". So We are setting this bug as Duplicate.
Thank You.