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apple-crash-symbolication

Symbolicate .NET runtime frames in Apple platform .ips crash logs (iOS, tvOS, Mac Catalyst, macOS). Extracts UUIDs and addresses from the native backtrace, locates dSYM debug symbols, and runs atos to produce function names with source file and line numbers. Automatically downloads .dwarf symbols from the Microsoft symbol server using Mach-O UUIDs. USE FOR triaging a .NET MAUI or Mono app crash from an .ips file on any Apple platform, resolving native backtrace frames in libcoreclr or libmonosgen-2.0 to .NET runtime source code, retrieving .ips crash logs from a connected iOS device or iPhone, or investigating EXC_CRASH, EXC_BAD_ACCESS, SIGABRT, or SIGSEGV originating from the .NET runtime. DO NOT USE FOR pure Swift/Objective-C crashes with no .NET components, or Android tombstone files. INVOKES Symbolicate-Crash.ps1 script, atos, dwarfdump, idevicecrashreport.

plugins/dotnet-diag/skills/apple-crash-symbolication/SKILL.md

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Network or broad shell
Last checked
Nov 4, 2026

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Repository last updated
Nov 6, 2026
License
MIT

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# Apple Platform Crash Log .NET Symbolication

Resolves native backtrace frames from .NET MAUI and Mono app crashes on Apple platforms (iOS, tvOS, Mac Catalyst, macOS) to function names, source files, and line numbers using Mach-O UUIDs and dSYM debug symbol bundles.

**Inputs:** Crash log file (`.ips` JSON format, iOS 15+ / macOS 12+), `atos` (from Xcode), optionally a connected iOS device to pull crash logs from.

**Do not use when:** The crashing library is not a .NET component (e.g., pure Swift/UIKit), or the crash log is an Android tombstone.

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## Workflow

### Step 1: Parse the .ips Crash Log