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List-Post: List-Help: List-Subscribe: , Cc: thuth@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/16/20 3:25 PM, Markus Armbruster wrote: > Recent commit 3e7fb5811b "qapi: Fix code generation for empty modules" > modules" switched QAPISchema.visit() from > > for entity in self._entity_list: > > effectively to > > for mod in self._module_dict.values(): > for entity in mod._entity_list: > > Visits in the same order as long as .values() is in insertion order. > That's the case only for Python 3.6 and later. Before, it's in some > arbitrary order, which results in broken generated code. > > Fix by making self._module_dict an OrderedDict rather than a dict. > > Fixes: 3e7fb5811baab213dcc7149c3aa69442d683c26c > Signed-off-by: Markus Armbruster > --- > scripts/qapi/schema.py | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py > index 0bfc5256fb..5100110fa2 100644 > --- a/scripts/qapi/schema.py > +++ b/scripts/qapi/schema.py > @@ -795,7 +795,7 @@ class QAPISchema(object): > self.docs = parser.docs > self._entity_list = [] > self._entity_dict = {} > - self._module_dict = {} > + self._module_dict = OrderedDict() > self._schema_dir = os.path.dirname(fname) > self._make_module(None) # built-ins > self._make_module(fname) > This problem has bitten me *many* times. I'm wondering if there's a prescription that isn't just "Wait until we can stipulate 3.6+".