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@kenmaz(松前 健太郎)

iOS10 で CoreData の SQLDebugログ が出力されない

Last updated at Posted at 2016-09-26

CoreDataはiOS10でログ出力先がNSLogからos_log/stderrに変わったらしい。その影響で
-com.apple.CoreData.SQLDebug 1を指定していてもconsoleにSQLiteのログが出力されない。

その場合は起動時引数に-com.apple.CoreData.Logging.stderr 1を追加してやればOK。

スクリーンショット 2016-09-26 15.34.50.png

参考
https://forums.developer.apple.com/thread/63315

↑のスレ見て、-com.apple.CoreData.Logging.stderr 1に書き換えればいいのね、と早とちりしてしまった。正しくは書き換えるのではなく、両方指定する必要がある。

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