Crash when accessing in multi-threaded environment

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#813 12 comments 9 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
sqlite, swift
Domain
databases, mobile-dev

Research direction

Start at Connection.prepare and Connection.pluck, which lead to the reported sqlite3_prepare_v2 crash. Compare how connections are accessed across threads on iOS 9 and iOS 10 versus iOS 11 and later, and first establish a reproducible case. Done means the cause is identified and the issue has a verified resolution or a clearly documented limitation.

Written by the indexing model from the issue text.

Description

bug

Build Information

Application is written in Swift 4
Using SQLite.swift 0.11.4 via CocoaPods
Xcode 9.3.1

Crash Information

I'm experiencing a crash in sqlite3_prepare_v2 which gets called from Connection.prepare or Connection.pluck on devices running iOS 9 & iOS 10. The connections are accessed in a multi-threaded environment and works fine on iOS 11 and above.

Below is a screenshot of the exact place where the crash happens:

What might be the possible reason for this. TIA

screen shot 2018-06-04 at 18 32 32

Dominant language
Swift
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Avg merge
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Merged PRs (30d)
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