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vectorForWord: returned the CBLArray from a query result, cast to NSArray. That array is only valid while the result set is alive, so callers read freed memory once the enumeration ended. The result was an EXC_BAD_ACCESS crash inside -[CBLIndexUpdater setVector:atIndex:error:] and wrong vectors in the assertions. It only showed up when running against release builds. Copy the values out with -[CBLArray toArray] instead.
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Pull request overview
Note
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Updates the lazy vector search test helper to detach vector values from a result-set–scoped CBLArray by converting it to a Foundation array before returning.
Changes:
- Treat the query result value as
CBLArray*instead ofid. - Convert the fleece-backed
CBLArrayto anNSArrayviatoArraybefore returning.
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jianminzhao
approved these changes
Aug 18, 2026
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vectorForWord: returned the CBLArray from a query result, cast to NSArray. That array is only valid while the result set is alive, so callers read freed memory once the enumeration ended. The result was an EXC_BAD_ACCESS crash inside -[CBLIndexUpdater setVector:atIndex:error:] and wrong vectors in the assertions. It only showed up when running against release builds. Copy the values out with -[CBLArray toArray] instead.