Backport PR #12804: Add explicit argtype counting, required for osx-arm64.

IPython/terminal/pt_inputhooks/osx.py

@@ -77,24 +77,42 b" kCFRunLoopCommonModes = void_p.in_dll(CoreFoundation, 'kCFRunLoopCommonModes')"
 
 def _NSApp():
     """Return the global NSApplication instance (NSApp)"""
+    objc.objc_msgSend.argtypes = [void_p, void_p]
     return msg(C('NSApplication'), n('sharedApplication'))
 
 
 def _wake(NSApp):
     """Wake the Application"""
-    event = msg(C('NSEvent'),
-        n('otherEventWithType:location:modifierFlags:'
-          'timestamp:windowNumber:context:subtype:data1:data2:'),
-        15, # Type
-        0, # location
-        0, # flags
-        0, # timestamp
-        0, # window
-        None, # context
-        0, # subtype
-        0, # data1
-        0, # data2
+    objc.objc_msgSend.argtypes = [
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+        void_p,
+    ]
+    event = msg(
+        C("NSEvent"),
+        n(
+            "otherEventWithType:location:modifierFlags:"
+            "timestamp:windowNumber:context:subtype:data1:data2:"
+        ),
+        15,  # Type
+        0,  # location
+        0,  # flags
+        0,  # timestamp
+        0,  # window
+        None,  # context
+        0,  # subtype
+        0,  # data1
+        0,  # data2
     )
+    objc.objc_msgSend.argtypes = [void_p, void_p, void_p, void_p]
     msg(NSApp, n('postEvent:atStart:'), void_p(event), True)
 
 
@@ -106,6 +124,7 b' def _input_callback(fdref, flags, info):'
     CFFileDescriptorInvalidate(fdref)
     CFRelease(fdref)
     NSApp = _NSApp()
+    objc.objc_msgSend.argtypes = [void_p, void_p, void_p]
     msg(NSApp, n('stop:'), NSApp)
     _wake(NSApp)
 
@@ -128,6 +147,7 b' def inputhook(context):'
     """Inputhook for Cocoa (NSApp)"""
     NSApp = _NSApp()
     _stop_on_read(context.fileno())
+    objc.objc_msgSend.argtypes = [void_p, void_p]
     msg(NSApp, n('run'))
     if not _triggered.is_set():
         # app closed without firing callback,