- Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that

  ctypes isn't considered as requiring executable stacks.
Will backport to 2.5.

Misc/NEWS

@@ -81,6 +81,9 @@ Core and builtins
 Library
 -------
 
+- Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that
+  ctypes isn't considered as requiring executable stacks.
+
 - ctypes callback functions only support 'fundamental' data types as
   result type.  Raise an error when something else is used.  This is a
   partial fix for Bug #1574584.

Modules/_ctypes/libffi/src/x86/sysv.S

@@ -376,3 +376,7 @@ ffi_closure_raw_SYSV:
 #endif
 
 #endif /* ifndef __x86_64__ */
+
+#ifdef __ELF__
+.section .note.GNU-stack,"",%progbits
+#endif