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What are the *.symbols file in the ipa?

When unzipped an ipa file, I found some *.symbols files in the ./Symbols folder:Symbols ├── 0622D177-3DDB-317B-B4C7-08BEC26BEB0D.symbols ├── 2E37B62A-0764-3C92-876E-A83744355E71.symbols ├── 39208D90-C91E-3F4F-8162-C19B4E4037CE.symbols ├── 396D29A9-8DCA-3A77-8B64-F2B57030D5DA.symbols ├── 48A24338-2A05-39FA-B767-75162FEF155E.symbols ├── 522D51C3-6B15-3D61-B6EF-2EFB0D95776D.symbols ├── 5CFF80E9-E21B-3329-B55C-E6362DAA9200.symbols └── 83E736C8-05C6-36D9-970C-E2B7328DF09A.symbolsIt seems the file name of the *.symbols files are the same as the dsym file. What are the symbols files? And what is the difference between *.symbols files and dsym?
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by shino996.
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std::bad_alloc Crash in CoreAnalytics

We found many C++ exceotion crash cases increase quickly in our app recent days, which related to CoreAnalytics in iOS 13 and named "std::bad_alloc". From the crash report, we suspected that some JSON files, downloaded by CoreAnalytics when use MapKit caused some crashed when C++ handle it. Has someone met the same crash? And did apple update some files about CoreAnalytics recent days? Crash report 1 Crash Report 2
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by shino996.
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