From ac44e3e37fbe4ecb20f13c442722c93b5247b093 Mon Sep 17 00:00:00 2001
From: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
Date: Fri, 1 May 2026 20:12:08 +0800
Subject: [PATCH] gh-148967: Fix FFI type pointer handling for C complex
 support in set_stginfo_ffi_type_pointer (GH-148969) (cherry picked from
 commit f2c7c0d2b799c927d9a78e87e4a640d3f9b0356c)

Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
---
 Modules/_ctypes/_ctypes.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 705aac896aab4e..eb1e70c9afdf0f 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -2235,6 +2235,7 @@ c_void_p_from_param_impl(PyObject *type, PyTypeObject *cls, PyObject *value)
 static int
 set_stginfo_ffi_type_pointer(StgInfo *stginfo, struct fielddesc *fmt)
 {
+#if defined(_Py_FFI_SUPPORT_C_COMPLEX)
     if (!fmt->pffi_type->elements) {
         stginfo->ffi_type_pointer = *fmt->pffi_type;
     }
@@ -2254,6 +2255,10 @@ set_stginfo_ffi_type_pointer(StgInfo *stginfo, struct fielddesc *fmt)
         memcpy(stginfo->ffi_type_pointer.elements,
                fmt->pffi_type->elements, els_size);
     }
+#else
+    assert(!fmt->pffi_type->elements);
+    stginfo->ffi_type_pointer = *fmt->pffi_type;
+#endif
     return 0;
 }