Crash report

What happened?

Python3.14.0a6+ (heads/main:0e53038ea82,Mar242025,14:56:34) [GCC7.5.0]onlinuxType"help","copyright","credits"or"license"formoreinformation.>>>classA:...def__anext__(self):...raiseStopAsyncIteration...>>>anext(A(),"a")Segmentationfault (coredumped)

There is no crash withanext(A()) or when directly calling__anext__(). Or when__anext__ is declared withasync def, it's fine. Or when__anext__() doesn't raise, it's also fine.

NB: I haven't bisected the change but itmight be related to what I wrote in76ffaef.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Output from running 'python -VV' on the command line:

No response

Linked PRs

• gh-131670: Fix crash inanext() when__anext__ is sync and raises #131682
• [3.13] gh-131670: Fix crash inanext() when__anext__ is sync and raises (GH-131682) #131686
• [3.12] gh-131670: Fix crash inanext() when__anext__ is sync and raises (GH-131682) #131687