From f08173bb939f3d45594cb674acb092af9cf23747 Mon Sep 17 00:00:00 2001
From: Mark Dickinson <dickinsm@gmail.com>
Date: Thu, 3 Dec 2009 10:59:46 +0000
Subject: [PATCH] Issue #7414: Add missing 'case 'C'' to skipitem() in
 getargs.c.  This was causing PyArg_ParseTupleAndKeywords(args, kwargs, "|CC",
 ...) to fail with a RuntimeError.  Thanks Case Van Horsen for tracking down
 the source of this error.

---
 Misc/NEWS                 |  3 +++
 Modules/_testcapimodule.c | 47 +++++++++++++++++++++++++++++++++++++++
 Python/getargs.c          |  1 +
 3 files changed, 51 insertions(+)

diff --git a/Misc/NEWS b/Misc/NEWS
index 93c4653167..6a216ed4a0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -121,6 +121,9 @@ Core and Builtins
 C-API
 -----
 
+- Issue #7414: 'C' code wasn't being skipped properly (for keyword arguments)
+  in PyArg_ParseTupleAndKeywords.
+
 - Issue #Add '%lld' and '%llu' support to PyString_FromFormat(V)
   and PyErr_Format, on machines with HAVE_LONG_LONG defined.
 
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 0ed2111508..f41d4fec03 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -616,6 +616,52 @@ test_s_code(PyObject *self)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+test_bug_7414(PyObject *self)
+{
+	/* Issue #7414: for PyArg_ParseTupleAndKeywords, 'C' code wasn't being
+	   skipped properly in skipitem() */
+	int a = 0, b = 0, result;
+	char *kwlist[] = {"a", "b", NULL};
+	PyObject *tuple = NULL, *dict = NULL, *b_str;
+
+	tuple = PyTuple_New(0);
+	if (tuple == NULL)
+		goto failure;
+	dict = PyDict_New();
+	if (dict == NULL)
+		goto failure;
+	b_str = PyUnicode_FromString("b");
+	if (b_str == NULL)
+		goto failure;
+	result = PyDict_SetItemString(dict, "b", b_str);
+	Py_DECREF(b_str);
+	if (result < 0)
+		goto failure;
+
+	result = PyArg_ParseTupleAndKeywords(tuple, dict, "|CC",
+					     kwlist, &a, &b);
+	if (!result)
+		goto failure;
+
+	if (a != 0)
+		return raiseTestError("test_bug_7414",
+			"C format code not skipped properly");
+	if (b != 'b')
+		return raiseTestError("test_bug_7414",
+			"C format code returned wrong value");
+
+	Py_DECREF(dict);
+	Py_DECREF(tuple);
+	Py_RETURN_NONE;
+
+  failure:
+	Py_XDECREF(dict);
+	Py_XDECREF(tuple);
+	return NULL;
+}
+
+
 static volatile int x;
 
 /* Test the u and u# codes for PyArg_ParseTuple. May leak memory in case
@@ -1477,6 +1523,7 @@ static PyMethodDef TestMethods[] = {
 	{"test_long_numbits",	(PyCFunction)test_long_numbits,	 METH_NOARGS},
 	{"test_k_code",		(PyCFunction)test_k_code,	 METH_NOARGS},
 	{"test_empty_argparse", (PyCFunction)test_empty_argparse,METH_NOARGS},
+	{"test_bug_7414", (PyCFunction)test_bug_7414, METH_NOARGS},
 	{"test_null_strings",	(PyCFunction)test_null_strings,	 METH_NOARGS},
 	{"test_string_from_format", (PyCFunction)test_string_from_format, METH_NOARGS},
 	{"test_with_docstring", (PyCFunction)test_with_docstring, METH_NOARGS,
diff --git a/Python/getargs.c b/Python/getargs.c
index f41cd05eaf..b69aaed56c 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1772,6 +1772,7 @@ skipitem(const char **p_format, va_list *p_va, int flags)
 	case 'd': /* double */
 	case 'D': /* complex double */
 	case 'c': /* char */
+	case 'C': /* unicode char */
 		{
 			(void) va_arg(*p_va, void *);
 			break;
-- 
2.40.0