Fix #56: PyModuleDef changed "m_slots" to "m_reload" in Python 3.5.

Author: dgrunwald

python3-sys/src/moduleobject.rs

@@ -27,6 +27,11 @@ extern "C" {
     pub fn PyModule_GetFilenameObject(arg1: *mut PyObject) -> *mut PyObject;
     pub fn PyModule_GetDef(arg1: *mut PyObject) -> *mut PyModuleDef;
     pub fn PyModule_GetState(arg1: *mut PyObject) -> *mut c_void;
+
+    #[cfg(Py_3_5)]
+    pub fn PyModuleDef_Init(arg1: *mut PyModuleDef) -> *mut PyObject;
+    #[cfg(Py_3_5)]
+    pub static mut PyModuleDef_Type: PyTypeObject;
 }
 
 #[repr(C)]
@@ -48,6 +53,23 @@ pub const PyModuleDef_HEAD_INIT: PyModuleDef_Base = PyModuleDef_Base {
     m_copy: 0 as *mut PyObject
 };
 
+#[repr(C)]
+#[derive(Copy)]
+#[cfg(Py_3_5)]
+pub struct PyModuleDef_Slot {
+    pub slot: c_int,
+    pub value: *mut c_void,
+}
+#[cfg(Py_3_5)]
+impl Clone for PyModuleDef_Slot {
+    fn clone(&self) -> PyModuleDef_Slot { *self }
+}
+
+#[cfg(Py_3_5)]
+pub const Py_mod_create : c_int = 1;
+#[cfg(Py_3_5)]
+pub const Py_mod_exec : c_int = 2;
+
 #[repr(C)]
 #[derive(Copy)]
 pub struct PyModuleDef {
@@ -56,7 +78,10 @@ pub struct PyModuleDef {
     pub m_doc: *const c_char,
     pub m_size: Py_ssize_t,
     pub m_methods: *mut PyMethodDef,
+    #[cfg(not(Py_3_5))]
     pub m_reload: Option<inquiry>,
+    #[cfg(Py_3_5)]
+    pub m_slots: *mut PyModuleDef_Slot,
     pub m_traverse: Option<traverseproc>,
     pub m_clear: Option<inquiry>,
     pub m_free: Option<freefunc>,
@@ -65,4 +90,28 @@ impl Clone for PyModuleDef {
     fn clone(&self) -> PyModuleDef { *self }
 }
 
+#[cfg(not(Py_3_5))]
+pub const PyModuleDef_INIT: PyModuleDef = PyModuleDef {
+    m_base: PyModuleDef_HEAD_INIT,
+    m_name: 0 as *const _,
+    m_doc: 0 as *const _,
+    m_size: 0,
+    m_methods: 0 as *mut _,
+    m_reload: None,
+    m_traverse: None,
+    m_clear: None,
+    m_free: None
+};
 
+#[cfg(Py_3_5)]
+pub const PyModuleDef_INIT: PyModuleDef = PyModuleDef {
+    m_base: PyModuleDef_HEAD_INIT,
+    m_name: 0 as *const _,
+    m_doc: 0 as *const _,
+    m_size: 0,
+    m_methods: 0 as *mut _,
+    m_slots: 0 as *mut _,
+    m_traverse: None,
+    m_clear: None,
+    m_free: None
+};

python3-sys/src/pystate.rs

@@ -2,6 +2,7 @@ use libc::{c_int, c_long};
 use object::PyObject;
 use moduleobject::PyModuleDef;
 
+#[cfg(Py_3_6)]
 pub const MAX_CO_EXTRA_USERS: c_int = 255;
 
 pub enum PyInterpreterState { }

src/lib.rs

@@ -305,17 +305,7 @@ macro_rules! py_module_initializer {
             fn init($py_id: $crate::Python, $m_id: &$crate::PyModule) -> $crate::PyResult<()> {
                 $body
             }
-            static mut MODULE_DEF: $crate::_detail::ffi::PyModuleDef = $crate::_detail::ffi::PyModuleDef {
-                m_base: $crate::_detail::ffi::PyModuleDef_HEAD_INIT,
-                m_name: 0 as *const _,
-                m_doc: 0 as *const _,
-                m_size: 0, // we don't use per-module state
-                m_methods: 0 as *mut _,
-                m_reload: None,
-                m_traverse: None,
-                m_clear: None,
-                m_free: None
-            };
+            static mut MODULE_DEF: $crate::_detail::ffi::PyModuleDef = $crate::_detail::ffi::PyModuleDef_INIT;
             // We can't convert &'static str to *const c_char within a static initializer,
             // so we'll do it here in the module initialization:
             MODULE_DEF.m_name = concat!(stringify!($name), "\0").as_ptr() as *const _;
@@ -324,7 +314,6 @@ macro_rules! py_module_initializer {
     }
 }
 
-
 #[doc(hidden)]
 #[cfg(feature="python3-sys")]
 pub unsafe fn py_module_initializer_impl(