Empty crash reports

[elliotdickison]

Hi all, we recently upgraded from react-native@0.74.5 (hermes@2024-06-28) to react-native@0.79.5 (hermes@2025-06-04) and are seeing a spike in these mystery crashes:

This is all the information Apple is giving us for these crashes. We use Sentry w/ native crash reporting as well but are not able to find any details in there.

These crashes make up 99% of the crashes in our apps, but they're not at catastrophic levels (0.3% of sessions).

Does anyone recognize this kind of report? Any tips on debugging? Thanks!

[elliotdickison]

UPDATE: Another one of our apps is reporting similar crashes but with more happening on the thread. It appears that these crashes are occurring on app start:

[tmikov]

Hmm, there isn't a lot to go on here - no stack, no error message. I doubt it will help, but just in case, can you show the entire function signatures at the top of this stack trace?

[elliotdickison]

Yes understood, not even sure if it's hermes TBH but that's where Xcode is casting the blame.

Here are the functions from the top of the stack traces for several of these crashes. We have this release out to a significant number of users now and the crash rate has settled in at about 0.2% of sessions.

[crossterra-agent]

Created planner discussion: https://github.com/CrossTerra/monorepo/discussions/2318