RCTText.m drawRect

[myusuf3]

My app keeps crashing randomly, I am not even interacting with the UI it just crashes inside drawRect for RCTText.m The page will load up fine work well then bang.

Here is the trace I get.

 *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** NSRunStorage, _NSBlockNumberForIndex(): index (0) beyond array bounds (0)'
*** First throw call stack:
(0x1821e02d8 0x193a040e4 0x1821e0218 0x18ffe3bac 0x18ffd092c 0x18ffd1a8c 0x18ff9e710 0x18ffd4388 0x18ffd61a8 0x1003635e0 0x186ca39cc 0x186596c84 0x186580e04 0x1865803e0 0x18657ff64 0x186560a7c 0x186560734 0x18655febc 0x18655fc3c 0x186559364 0x1821982a4 0x182195230 0x182195610 0x1820c12d4 0x18b8d76fc 0x186c86fac 0x100203c08 0x194082a08)
libc++abi.dylib: terminating with uncaught exception of type NSException

[brentvatne]

@myusuf3 can you try cleaning the project?

[ide]

Looks like the same problem as #1207.

[brentvatne]

@ide - agreed, also somewhat related to #749 perhaps

[nicklockwood]

Cc @a2 - I think we either need to introduce some thread locking around our NSTextLayout, or rethink the strategy of sharing it between main & shadow threads.

[myusuf3]

So we have some code that can reproduce this bug fairly reliably and it does point to it being some sort of race condition when updating text on the screen.

Let me know I think I can whip up something fairly quick.

[myusuf3]

@nicklockwood I agree with the rethinking strategy of sharing main and shadow threads. This is currently breaking us and how to turn of code that does the text updating in order to continue app development.

[ide]

Closing this out since 0689c07 hopefully fixes the source of the text crashes. Please open another task if the master branch of React still causes RCTText crashes for you.