[3.14] gh-137883: Check the recursion limit for specialized keyword argument calls (GH-137887) (#137945)

Co-authored-by: Peter Bierma <[email protected]>

Author: ZeroIntensity

Include/internal/pycore_opcode_metadata.h

@@ -1074,6 +1074,14 @@ def c_py_recurse(m):
             with self.assertRaises(RecursionError):
                 c_py_recurse(100_000)
 
+    def test_recursion_with_kwargs(self):
+        # GH-137883: The interpreter forgot to check the recursion limit when
+        # calling with keywords.
+        def recurse_kw(a=0):
+            recurse_kw(a=0)
+        with self.assertRaises(RecursionError):
+            recurse_kw()
+
 
 class TestFunctionWithManyArgs(unittest.TestCase):
     def test_function_with_many_args(self):

Lib/test/test_call.py

@@ -0,0 +1 @@
+Fix runaway recursion when calling a function with keyword arguments.

Misc/NEWS.d/next/Core_and_Builtins/2025-08-17-13-36-53.gh-issue-137883.55VDCN.rst

@@ -4740,6 +4740,7 @@ dummy_func(
             unused/1 + // Skip over the counter
             _CHECK_PEP_523 +
             _CHECK_FUNCTION_VERSION_KW +
+            _CHECK_RECURSION_REMAINING +
             _PY_FRAME_KW +
             _SAVE_RETURN_OFFSET +
             _PUSH_FRAME;