Issue #9518: Extend the PyModuleDef_HEAD_INIT macro to explicitly

zero-initialize all fields, fixing compiler warnings seen when building
extension modules with gcc with "-Wmissing-field-initializers" (implied
by "-W")

1 files changed, 6 insertions, 1 deletions

diff --git a/Include/moduleobject.h b/Include/moduleobject.h
index 376a525..34fa810 100644
--- a/Include/moduleobject.h
+++ b/Include/moduleobject.h
@@ -28,7 +28,12 @@ typedef struct PyModuleDef_Base {
   PyObject* m_copy;
 } PyModuleDef_Base;
 
-#define PyModuleDef_HEAD_INIT {PyObject_HEAD_INIT(NULL)}
+#define PyModuleDef_HEAD_INIT { \
+    PyObject_HEAD_INIT(NULL)    \
+    NULL, /* m_init */          \
+    0,    /* m_index */         \
+    NULL, /* m_copy */          \
+  }
 
 typedef struct PyModuleDef{
   PyModuleDef_Base m_base;