change recursive pushout to common_parent (to take care of direct coe…

…rcions)
sagemath · Aug 23, 2015 · 3cacc52 · 3cacc52
1 parent 7f56908
commit 3cacc52
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/sage/categories/pushout.py b/src/sage/categories/pushout.py
@@ -731,7 +731,9 @@ def common_base(self, other_functor, self_bases, other_bases):
             self._raise_common_base_exception_(
                 other_functor, self_bases, other_bases,
                 'Functors need the same number of arguments')
-        Z_bases = tuple(pushout(S, O) for S, O in zip(self_bases, other_bases))
+        from sage.structure.element import get_coercion_model
+        Z_bases = tuple(get_coercion_model().common_parent(S, O)
+                        for S, O in zip(self_bases, other_bases))
         return self(Z_bases)