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-rw-r--r--Python/ceval.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/Python/ceval.c b/Python/ceval.c
index df057b7..ad6e792 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1822,7 +1822,7 @@ eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
na++;
n++;
}
- else {
+ else if (!((flags & 1) && na == 0)) {
/* Unbound methods must be called with an
instance of the class (or a derived
class) as first argument */
@@ -1895,6 +1895,20 @@ eval_code2(PyCodeObject *co, PyObject *globals, PyObject *locals,
if (nstar < 0) {
goto extcall_fail;
}
+ if (class && self == NULL && na == 0) {
+ /* * arg is first argument of method,
+ so check it is isinstance of class */
+ self = PyTuple_GET_ITEM(stararg, 0);
+ if (!(PyInstance_Check(self) &&
+ PyClass_IsSubclass((PyObject *)
+ (((PyInstanceObject *)self)->in_class),
+ class))) {
+ PyErr_SetString(PyExc_TypeError,
+ "unbound method must be called with instance as first argument");
+ x = NULL;
+ break;
+ }
+ }
}
if (nk > 0) {
if (kwdict == NULL) {