41 lines
2.7 KiB
Markdown
41 lines
2.7 KiB
Markdown
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# How to catch crash on ios use xcode
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## Overview
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Sometimes, we can't reproduce crash with local dev build, probably because your built version differs from the one QA team used.
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The QA team mostly used the PR build version. In this guide we will try to make a build as close as possible to the PR build for iOS.
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You may notice various configuration files starting with .env (such as .env, .env.e2e, .env.jenkins) in the project.
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The usage of these files and environment variables injected at build time on CI will not be covered in this guide.
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This guide covers how to configure Xcode to capture a crash stack trace with a physical iOS device. This allows debugging crashes by inspecting the stack trace.
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I will use [issue #17255](https://github.com/status-im/status-mobile/issues/17255) as an example to reproduce and analyze a crash.
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## Prerequisites
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- A physical ios device (simulator is not considered in this doc)
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- Xcode installed
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## Steps
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1. Prepare Status Mobile
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1. Open Terminal, cd to project root
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2. Run `make run-clojure` in one tab
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3. Run `make run-metro` in a second tab
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4. Run `make pod-install` in a third tab
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2. Configure Xcode Project
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1. Open Xcode
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2. Open a project or file, navigate to folder `path_to_root_directory_of_status_mobile/ios`
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3. Set Scheme `StatusImPR` as current scheme 
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4. Edit scheme 
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5. Change `Info` 
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6. Change `Diagnostics` 
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7. Set automatically manage signing 
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3. Update Code
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1. Edit `src/status_im2/setup/dev.cljs`, comment out lines 47-52 
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2. Edit `shadow-cljs.edn`, comment out `re-frisk-remote.preload`, otherwise it will try to connect `localhost:4567` on physical device which could slow down performance 
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4. Reproduce Crash And Analyze
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1. Choose your physical ios device as target device and Run
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2. Follow reproduce steps from [issue #17255](https://github.com/status-im/status-mobile/issues/17255) mentioned and xcode will halt at crash point 
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3. Inspect stack trace to identify root cause. From the stack trace, we can locate the crash happened in `api/geth_backend.go:1048`(createTempDBFile) clearly! 
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## Links
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- [changes](https://github.com/status-im/status-mobile/commit/4306d419de15e737e8ded3a749cc5e8d6a06e627) to source code
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