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-rw-r--r--Python/errors.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/Python/errors.c b/Python/errors.c
index 9e53d05..f856a79 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -107,7 +107,8 @@ _PyErr_SetObject(PyThreadState *tstate, PyObject *exception, PyObject *value)
if (exception != NULL &&
!PyExceptionClass_Check(exception)) {
_PyErr_Format(tstate, PyExc_SystemError,
- "exception %R not a BaseException subclass",
+ "_PyErr_SetObject: "
+ "exception %R is not a BaseException subclass",
exception);
return;
}
@@ -484,6 +485,15 @@ _PyErr_ChainExceptions(PyObject *exc, PyObject *val, PyObject *tb)
return;
PyThreadState *tstate = _PyThreadState_GET();
+
+ if (!PyExceptionClass_Check(exc)) {
+ _PyErr_Format(tstate, PyExc_SystemError,
+ "_PyErr_ChainExceptions: "
+ "exception %R is not a BaseException subclass",
+ exc);
+ return;
+ }
+
if (_PyErr_Occurred(tstate)) {
PyObject *exc2, *val2, *tb2;
_PyErr_Fetch(tstate, &exc2, &val2, &tb2);