Fix quite-bogus handling of arrays in plpython datum-to-PyObject

conversion.  Per bug #5497 from David Gardner.

diff --git a/src/pl/plpython/plpython.c b/src/pl/plpython/plpython.c
index 7ddc223..c530b80 100644 (file)
--- a/src/pl/plpython/plpython.c
+++ b/src/pl/plpython/plpython.c
@@ -1,7 +1,7 @@
 /**********************************************************************
  * plpython.c - python as a procedural language for PostgreSQL
  *
- *     $PostgreSQL: pgsql/src/pl/plpython/plpython.c,v 1.143 2010/05/01 17:04:38 tgl Exp $
+ *     $PostgreSQL: pgsql/src/pl/plpython/plpython.c,v 1.144 2010/06/10 04:05:01 tgl Exp $
  *
  *********************************************************************
  */
@@ -1838,6 +1838,7 @@ PLy_input_datum_func2(PLyDatumToOb *arg, Oid typeOid, HeapTuple typeTup)
        arg->typioparam = getTypeIOParam(typeTup);
        arg->typbyval = typeStruct->typbyval;
        arg->typlen = typeStruct->typlen;
+       arg->typalign = typeStruct->typalign;
 
        /* Determine which kind of Python object we will convert to */
        switch (getBaseType(element_type ? element_type : typeOid))
@@ -1873,10 +1874,17 @@ PLy_input_datum_func2(PLyDatumToOb *arg, Oid typeOid, HeapTuple typeTup)
 
        if (element_type)
        {
+               char            dummy_delim;
+               Oid                     funcid;
+
                arg->elm = PLy_malloc0(sizeof(*arg->elm));
                arg->elm->func = arg->func;
                arg->func = PLyList_FromArray;
-               get_typlenbyvalalign(element_type, &arg->elm->typlen, &arg->elm->typbyval, &arg->elm->typalign);
+               arg->elm->typoid = element_type;
+               get_type_io_data(element_type, IOFunc_output,
+                                                &arg->elm->typlen, &arg->elm->typbyval, &arg->elm->typalign, &dummy_delim,
+                                                &arg->elm->typioparam, &funcid);
+               perm_fmgr_info(funcid, &arg->elm->typfunc);
        }
 }
 
@@ -1986,6 +1994,7 @@ static PyObject *
 PLyList_FromArray(PLyDatumToOb *arg, Datum d)
 {
        ArrayType  *array = DatumGetArrayTypeP(d);
+       PLyDatumToOb *elm = arg->elm;
        PyObject   *list;
        int                     length;
        int                     lbound;
@@ -2011,11 +2020,13 @@ PLyList_FromArray(PLyDatumToOb *arg, Datum d)
                int                     offset;
 
                offset = lbound + i;
-               elem = array_ref(array, 1, &offset, arg->typlen, arg->elm->typlen, arg->elm->typbyval, arg->elm->typalign, &isnull);
+               elem = array_ref(array, 1, &offset, arg->typlen,
+                                                elm->typlen, elm->typbyval, elm->typalign,
+                                                &isnull);
                if (isnull)
                        PyList_SET_ITEM(list, i, Py_None);
                else
-                       PyList_SET_ITEM(list, i, arg->elm->func(arg, elem));
+                       PyList_SET_ITEM(list, i, elm->func(elm, elem));
        }
 
        return list;