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[docs] Improve documentation on LSAN failure symbolication #75451

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Jul 24, 2024
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[docs] Improve documentation on LSAN failure symbolication #75451

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9 changes: 5 additions & 4 deletions docs/LSANFailureSymbolication.md
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Expand Up @@ -2,11 +2,12 @@

### Create Ubuntu Container

1. Clone (or pull) swift-docker: https://github.com/swiftlang/swift-docker
2. Build the Ubuntu 18.04 container: `cd swift-ci/master/ubuntu/18.04; docker build .`
3. `docker run -it --cpus <CPUs> --memory <Memory> -v ~/<path to your local sources>:/src-on-host:cached --name lsan-reproducer --cap-add=SYS_PTRACE --security-opt seccomp=unconfined <hash that docker build outputs> bash`
1. Use an x86 machine. The following instructions currently don’t work on arm64. It might be easy to adjust them or not, I have not tried
2. Clone (or pull) swift-docker: https://github.com/swiftlang/swift-docker
3. Build the Ubuntu 22.04 container: `cd swift-ci/master/ubuntu/22.04; docker build .`
4. `docker run -it --cpus <CPUs> --memory <Memory> -v ~/<path to your local sources>:/src-on-host:cached --name lsan-reproducer --cap-add=SYS_PTRACE --security-opt seccomp=unconfined <hash that docker build outputs> bash`
- The `-cap-add` and `-security-opt` arguments are needed to run LLDB inside the Docker container
4. Copy the sources to inside the Docker container: `cp -r /src-on-host/* ~`
5. Copy the sources to inside the Docker container: `cp -r /src-on-host/* ~`
- We need to to this because the build needs a case-sensitive file system and your host machine probably has a case-insensitive file system

Build inside the Container
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