Uh oh!
There was an error while loading.Please reload this page.
- Notifications
You must be signed in to change notification settings - Fork34k
Closed
Description
Crash report
What happened?
The following code causes a crash in cpython:
classGeneric:def__call__(*a):print(a)def__getattr__(self,name):returnGeneric()name_5=Generic()typename_3[*name_2]=0name_3[name_5][0]
output:
(<__main__.Genericobjectat0x7fb99dc5a280>,name_3[<__main__.Genericobjectat0x7fb99d792420>], (0,))(<__main__.Genericobjectat0x7fb99dbd7960>,None)python3: ./Include/cpython/tupleobject.h:24:PyTuple_GET_SIZE:Assertion `PyTuple_Check(op)'failed.fish:Job1,'../cpython/install/bin/python3 …'terminatedbysignalSIGABRT (Abbruch)
I found this example while fuzzing withpysource-codegen.
CPython versions tested on:
3.12, 3.13, 3.14, 3.15
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
Python 3.14.0rc2+ (heads/3.14:45a79b4f4b7, Sep 3 2025, 22:05:34) [GCC 12.2.0]