lib/ldb: squash 'cast between incompatible function types' warning

To avoid warning above produced by using
-Wcast-function-type we;

  + ensure PyCFunctions of type METH_NOARGS defined dummy arg
  + ensure PyCFunctions of type METH_KEYWORDS use PY_DISCARD_FUNC_SIG
    macro

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>

diff --git a/lib/ldb/pyldb.c b/lib/ldb/pyldb.c
index 319840c2ea654ccb000a3afc3a73c1cfd504c36a..0f4c54a6835b203dd5585d12e2ed96de488197f8 100644 (file)
--- a/lib/ldb/pyldb.c
+++ b/lib/ldb/pyldb.c
@@ -34,6 +34,9 @@
 #include "pyldb.h"
 #include "dlinklist.h"
 
+/* discard signature of 'func' in favour of 'target_sig' */
+#define PY_DISCARD_FUNC_SIG(target_sig, func) (target_sig)(void(*)(void))func
+
 struct py_ldb_search_iterator_reply;
 
 typedef struct {
@@ -189,12 +192,14 @@ static PyObject *wrap_text(const char *type, PyObject *wrapped)
        return inst;
 }
 
-static PyObject *py_ldb_control_get_oid(PyLdbControlObject *self)
+static PyObject *py_ldb_control_get_oid(PyLdbControlObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyStr_FromString(self->data->oid);
 }
 
-static PyObject *py_ldb_control_get_critical(PyLdbControlObject *self)
+static PyObject *py_ldb_control_get_critical(PyLdbControlObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyBool_FromLong(self->data->critical);
 }
@@ -487,27 +492,32 @@ static struct ldb_result *PyLdbResult_AsResult(TALLOC_CTX *mem_ctx,
        return res;
 }
 
-static PyObject *py_ldb_dn_validate(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_validate(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyBool_FromLong(ldb_dn_validate(self->dn));
 }
 
-static PyObject *py_ldb_dn_is_valid(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_is_valid(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyBool_FromLong(ldb_dn_is_valid(self->dn));
 }
 
-static PyObject *py_ldb_dn_is_special(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_is_special(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyBool_FromLong(ldb_dn_is_special(self->dn));
 }
 
-static PyObject *py_ldb_dn_is_null(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_is_null(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyBool_FromLong(ldb_dn_is_null(self->dn));
 }
  
-static PyObject *py_ldb_dn_get_casefold(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_get_casefold(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyStr_FromString(ldb_dn_get_casefold(self->dn));
 }
@@ -517,12 +527,14 @@ static PyObject *py_ldb_dn_get_linearized(PyLdbDnObject *self)
        return PyStr_FromString(ldb_dn_get_linearized(self->dn));
 }
 
-static PyObject *py_ldb_dn_canonical_str(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_canonical_str(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyStr_FromString(ldb_dn_canonical_string(self->dn, self->dn));
 }
 
-static PyObject *py_ldb_dn_canonical_ex_str(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_canonical_ex_str(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        return PyStr_FromString(ldb_dn_canonical_ex_string(self->dn, self->dn));
 }
@@ -618,7 +630,8 @@ static PyObject *py_ldb_dn_richcmp(PyObject *dn1, PyObject *dn2, int op)
        return richcmp(ret, op);
 }
 
-static PyObject *py_ldb_dn_get_parent(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_get_parent(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn = pyldb_Dn_AsDn((PyObject *)self);
        struct ldb_dn *parent;
@@ -760,7 +773,8 @@ static PyObject *py_ldb_dn_set_component(PyLdbDnObject *self, PyObject *args)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_dn_get_rdn_name(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_get_rdn_name(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn;
        const char *name;
@@ -775,7 +789,8 @@ static PyObject *py_ldb_dn_get_rdn_name(PyLdbDnObject *self)
        return PyStr_FromString(name);
 }
 
-static PyObject *py_ldb_dn_get_rdn_value(PyLdbDnObject *self)
+static PyObject *py_ldb_dn_get_rdn_value(PyLdbDnObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn;
        const struct ldb_val *val;
@@ -803,7 +818,9 @@ static PyMethodDef py_ldb_dn_methods[] = {
                "Check whether this is a null DN." },
        { "get_casefold", (PyCFunction)py_ldb_dn_get_casefold, METH_NOARGS,
                NULL },
-       { "get_linearized", (PyCFunction)py_ldb_dn_get_linearized, METH_NOARGS,
+       { "get_linearized", PY_DISCARD_FUNC_SIG(PyCFunction,
+                                               py_ldb_dn_get_linearized),
+               METH_NOARGS,
                NULL },
        { "canonical_str", (PyCFunction)py_ldb_dn_canonical_str, METH_NOARGS,
                "S.canonical_str() -> string\n"
@@ -813,7 +830,9 @@ static PyMethodDef py_ldb_dn_methods[] = {
        { "canonical_ex_str", (PyCFunction)py_ldb_dn_canonical_ex_str, METH_NOARGS,
                "S.canonical_ex_str() -> string\n"
                "Canonical version of this DN (like a posix path, with terminating newline)." },
-       { "extended_str", (PyCFunction)py_ldb_dn_extended_str, METH_VARARGS | METH_KEYWORDS,
+       { "extended_str", PY_DISCARD_FUNC_SIG(PyCFunction,
+                                             py_ldb_dn_extended_str),
+               METH_VARARGS | METH_KEYWORDS,
                "S.extended_str(mode=1) -> string\n"
                "Extended version of this DN" },
        { "parent", (PyCFunction)py_ldb_dn_get_parent, METH_NOARGS,
@@ -1027,7 +1046,8 @@ static PyObject *py_ldb_set_modules_dir(PyTypeObject *self, PyObject *args)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_transaction_start(PyLdbObject *self)
+static PyObject *py_ldb_transaction_start(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb_ctx = pyldb_Ldb_AsLdbContext(self);
        int ldb_err;
@@ -1036,7 +1056,8 @@ static PyObject *py_ldb_transaction_start(PyLdbObject *self)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_transaction_commit(PyLdbObject *self)
+static PyObject *py_ldb_transaction_commit(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb_ctx = pyldb_Ldb_AsLdbContext(self);
        int ldb_err;
@@ -1045,7 +1066,8 @@ static PyObject *py_ldb_transaction_commit(PyLdbObject *self)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_transaction_prepare_commit(PyLdbObject *self)
+static PyObject *py_ldb_transaction_prepare_commit(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb_ctx = pyldb_Ldb_AsLdbContext(self);
        int ldb_err;
@@ -1054,7 +1076,8 @@ static PyObject *py_ldb_transaction_prepare_commit(PyLdbObject *self)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_transaction_cancel(PyLdbObject *self)
+static PyObject *py_ldb_transaction_cancel(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb_ctx = pyldb_Ldb_AsLdbContext(self);
        int ldb_err;
@@ -1063,7 +1086,8 @@ static PyObject *py_ldb_transaction_cancel(PyLdbObject *self)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_setup_wellknown_attributes(PyLdbObject *self)
+static PyObject *py_ldb_setup_wellknown_attributes(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb_ctx = pyldb_Ldb_AsLdbContext(self);
        int ldb_err;
@@ -1077,7 +1101,8 @@ static PyObject *py_ldb_repr(PyLdbObject *self)
        return PyStr_FromString("<ldb connection>");
 }
 
-static PyObject *py_ldb_get_root_basedn(PyLdbObject *self)
+static PyObject *py_ldb_get_root_basedn(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn = ldb_get_root_basedn(pyldb_Ldb_AsLdbContext(self));
        if (dn == NULL)
@@ -1086,7 +1111,8 @@ static PyObject *py_ldb_get_root_basedn(PyLdbObject *self)
 }
 
 
-static PyObject *py_ldb_get_schema_basedn(PyLdbObject *self)
+static PyObject *py_ldb_get_schema_basedn(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn = ldb_get_schema_basedn(pyldb_Ldb_AsLdbContext(self));
        if (dn == NULL)
@@ -1094,7 +1120,8 @@ static PyObject *py_ldb_get_schema_basedn(PyLdbObject *self)
        return py_ldb_dn_copy(dn);
 }
 
-static PyObject *py_ldb_get_config_basedn(PyLdbObject *self)
+static PyObject *py_ldb_get_config_basedn(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn = ldb_get_config_basedn(pyldb_Ldb_AsLdbContext(self));
        if (dn == NULL)
@@ -1102,7 +1129,8 @@ static PyObject *py_ldb_get_config_basedn(PyLdbObject *self)
        return py_ldb_dn_copy(dn);
 }
 
-static PyObject *py_ldb_get_default_basedn(PyLdbObject *self)
+static PyObject *py_ldb_get_default_basedn(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_dn *dn = ldb_get_default_basedn(pyldb_Ldb_AsLdbContext(self));
        if (dn == NULL)
@@ -2211,7 +2239,8 @@ static PyObject *py_ldb_set_opaque(PyLdbObject *self, PyObject *args)
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_modules(PyLdbObject *self)
+static PyObject *py_ldb_modules(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb = pyldb_Ldb_AsLdbContext(self);
        PyObject *ret = PyList_New(0);
@@ -2266,7 +2295,8 @@ static const struct ldb_dn_extended_syntax test_dn_syntax = {
        .write_hex_fn     = ldb_handler_copy,
 };
 
-static PyObject *py_ldb_register_test_extensions(PyLdbObject *self)
+static PyObject *py_ldb_register_test_extensions(PyLdbObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_context *ldb = pyldb_Ldb_AsLdbContext(self);
        int ret;
@@ -2312,22 +2342,28 @@ static PyMethodDef py_ldb_methods[] = {
                NULL },
        { "get_config_basedn", (PyCFunction)py_ldb_get_config_basedn, METH_NOARGS,
                NULL },
-       { "connect", (PyCFunction)py_ldb_connect, METH_VARARGS|METH_KEYWORDS, 
+       { "connect", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_connect),
+               METH_VARARGS|METH_KEYWORDS,
                "S.connect(url, flags=0, options=None) -> None\n"
                "Connect to a LDB URL." },
-       { "modify", (PyCFunction)py_ldb_modify, METH_VARARGS|METH_KEYWORDS,
+       { "modify", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_modify),
+               METH_VARARGS|METH_KEYWORDS,
                "S.modify(message, controls=None, validate=False) -> None\n"
                "Modify an entry." },
-       { "add", (PyCFunction)py_ldb_add, METH_VARARGS|METH_KEYWORDS,
+       { "add", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_add),
+               METH_VARARGS|METH_KEYWORDS,
                "S.add(message, controls=None) -> None\n"
                "Add an entry." },
-       { "delete", (PyCFunction)py_ldb_delete, METH_VARARGS|METH_KEYWORDS,
+       { "delete", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_delete),
+               METH_VARARGS|METH_KEYWORDS,
                "S.delete(dn, controls=None) -> None\n"
                "Remove an entry." },
-       { "rename", (PyCFunction)py_ldb_rename, METH_VARARGS|METH_KEYWORDS,
+       { "rename", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_rename),
+               METH_VARARGS|METH_KEYWORDS,
                "S.rename(old_dn, new_dn, controls=None) -> None\n"
                "Rename an entry." },
-       { "search", (PyCFunction)py_ldb_search, METH_VARARGS|METH_KEYWORDS,
+       { "search", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_search),
+               METH_VARARGS|METH_KEYWORDS,
                "S.search(base=None, scope=None, expression=None, attrs=None, controls=None) -> result\n"
                "Search in a database.\n"
                "\n"
@@ -2338,7 +2374,9 @@ static PyMethodDef py_ldb_methods[] = {
                ":param controls: Optional list of controls\n"
                ":return: ldb.Result object\n"
        },
-       { "search_iterator", (PyCFunction)py_ldb_search_iterator, METH_VARARGS|METH_KEYWORDS,
+       { "search_iterator", PY_DISCARD_FUNC_SIG(PyCFunction,
+                                                py_ldb_search_iterator),
+               METH_VARARGS|METH_KEYWORDS,
                "S.search_iterator(base=None, scope=None, expression=None, attrs=None, controls=None, timeout=None) -> iterator\n"
                "Search in a database.\n"
                "\n"
@@ -2655,7 +2693,8 @@ static PyObject *py_ldb_search_iterator_next(PyLdbSearchIteratorObject *self)
        return py_ret;
 }
 
-static PyObject *py_ldb_search_iterator_result(PyLdbSearchIteratorObject *self)
+static PyObject *py_ldb_search_iterator_result(PyLdbSearchIteratorObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        PyObject *py_ret = NULL;
 
@@ -2689,7 +2728,8 @@ static PyObject *py_ldb_search_iterator_result(PyLdbSearchIteratorObject *self)
        return py_ret;
 }
 
-static PyObject *py_ldb_search_iterator_abandon(PyLdbSearchIteratorObject *self)
+static PyObject *py_ldb_search_iterator_abandon(PyLdbSearchIteratorObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        if (self->state.req == NULL) {
                PyErr_SetString(PyExc_RuntimeError,
@@ -2739,19 +2779,22 @@ static PyObject *py_ldb_module_str(PyLdbModuleObject *self)
        return PyStr_FromString(pyldb_Module_AsModule(self)->ops->name);
 }
 
-static PyObject *py_ldb_module_start_transaction(PyLdbModuleObject *self)
+static PyObject *py_ldb_module_start_transaction(PyLdbModuleObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        pyldb_Module_AsModule(self)->ops->start_transaction(pyldb_Module_AsModule(self));
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_module_end_transaction(PyLdbModuleObject *self)
+static PyObject *py_ldb_module_end_transaction(PyLdbModuleObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        pyldb_Module_AsModule(self)->ops->end_transaction(pyldb_Module_AsModule(self));
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_module_del_transaction(PyLdbModuleObject *self)
+static PyObject *py_ldb_module_del_transaction(PyLdbModuleObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        pyldb_Module_AsModule(self)->ops->del_transaction(pyldb_Module_AsModule(self));
        Py_RETURN_NONE;
@@ -2891,7 +2934,8 @@ static PyObject *py_ldb_module_rename(PyLdbModuleObject *self, PyObject *args)
 }
 
 static PyMethodDef py_ldb_module_methods[] = {
-       { "search", (PyCFunction)py_ldb_module_search, METH_VARARGS|METH_KEYWORDS, NULL },
+       { "search", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_module_search),
+               METH_VARARGS|METH_KEYWORDS, NULL },
        { "add", (PyCFunction)py_ldb_module_add, METH_VARARGS, NULL },
        { "modify", (PyCFunction)py_ldb_module_modify, METH_VARARGS, NULL },
        { "rename", (PyCFunction)py_ldb_module_rename, METH_VARARGS, NULL },
@@ -3377,7 +3421,8 @@ static PyObject *py_ldb_msg_remove_attr(PyLdbMessageObject *self, PyObject *args
        Py_RETURN_NONE;
 }
 
-static PyObject *py_ldb_msg_keys(PyLdbMessageObject *self)
+static PyObject *py_ldb_msg_keys(PyLdbMessageObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_message *msg = pyldb_Message_AsMessage(self);
        Py_ssize_t i, j = 0;
@@ -3457,7 +3502,8 @@ static PyObject *py_ldb_msg_get(PyLdbMessageObject *self, PyObject *args, PyObje
        return PyObject_FromLdbValue(&el->values[idx]);
 }
 
-static PyObject *py_ldb_msg_items(PyLdbMessageObject *self)
+static PyObject *py_ldb_msg_items(PyLdbMessageObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_message *msg = pyldb_Message_AsMessage(self);
        Py_ssize_t i, j = 0;
@@ -3501,7 +3547,8 @@ static PyObject *py_ldb_msg_items(PyLdbMessageObject *self)
        return l;
 }
 
-static PyObject *py_ldb_msg_elements(PyLdbMessageObject *self)
+static PyObject *py_ldb_msg_elements(PyLdbMessageObject *self,
+               PyObject *Py_UNUSED(ignored))
 {
        struct ldb_message *msg = pyldb_Message_AsMessage(self);
        Py_ssize_t i = 0;
@@ -3561,13 +3608,14 @@ static PyMethodDef py_ldb_msg_methods[] = {
                "Message.from_dict(ldb, dict, mod_flag=FLAG_MOD_REPLACE) -> ldb.Message\n"
                "Class method to create ldb.Message object from Dictionary.\n"
                "mod_flag is one of FLAG_MOD_ADD, FLAG_MOD_REPLACE or FLAG_MOD_DELETE."},
-       { "keys", (PyCFunction)py_ldb_msg_keys, METH_NOARGS, 
+       { "keys", (PyCFunction)py_ldb_msg_keys, METH_NOARGS,
                "S.keys() -> list\n\n"
                "Return sequence of all attribute names." },
        { "remove", (PyCFunction)py_ldb_msg_remove_attr, METH_VARARGS, 
                "S.remove(name)\n\n"
                "Remove all entries for attributes with the specified name."},
-       { "get", (PyCFunction)py_ldb_msg_get, METH_VARARGS | METH_KEYWORDS,
+       { "get", PY_DISCARD_FUNC_SIG(PyCFunction, py_ldb_msg_get),
+               METH_VARARGS | METH_KEYWORDS,
          "msg.get(name,default=None,idx=None) -> string\n"
          "idx is the index into the values array\n"
          "if idx is None, then a list is returned\n"
@@ -3585,7 +3633,7 @@ static PyObject *py_ldb_msg_iter(PyLdbMessageObject *self)
 {
        PyObject *list, *iter;
 
-       list = py_ldb_msg_keys(self);
+       list = py_ldb_msg_keys(self, NULL);
        iter = PyObject_GetIter(list);
        Py_DECREF(list);
        return iter;
@@ -4241,7 +4289,8 @@ static PyMethodDef py_ldb_global_methods[] = {
        { "valid_attr_name", py_valid_attr_name, METH_VARARGS,
                "S.valid_attr_name(name) -> bool\n\nn"
                "Check whether the supplied name is a valid attribute name." },
-       { "open", (PyCFunction)py_ldb_new, METH_VARARGS|METH_KEYWORDS,
+       { "open", PY_DISCARD_FUNC_SIG(PyCFunction,py_ldb_new),
+               METH_VARARGS|METH_KEYWORDS,
                "S.open() -> Ldb\n\n"
                "Open a new LDB context." },
        { "binary_encode", py_binary_encode, METH_VARARGS,