BUG31335275: Fix memory leak when using the Decimal data type

nmariz · nmariz · commit 692778ab8ed3 · 2020-07-15T15:17:11.000+01:00
This patch fixes a memory leak in the C extension when using the Decimal
data type.
diff --git a/src/mysql_capi_conversion.c b/src/mysql_capi_conversion.c
@@ -701,8 +701,11 @@ PyObject*
 pytomy_decimal(PyObject *obj)
 {
 #ifdef PY3
-    return PyBytes_FromString((const char *)PyUnicode_1BYTE_DATA(
-                              PyObject_Str(obj)));
+    PyObject *str= PyObject_Str(obj);
+    PyObject *tmp= (const char *)PyUnicode_1BYTE_DATA(str);
+    PyObject *ret= PyBytes_FromString(tmp);
+    Py_DECREF(tmp);
+    return ret;
 #else
     PyObject *numeric, *new_num;
     int tmp_size;
