Chirag Ramani

This PR adds a dedicated application for testing Sanitizer related examples. It currently has an example for tsan and other sanitizers examples can be hosted once their respective support is...

FB11020478 - Xcode 14 incremental builds are all serial

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### FB11020478 - Xcode 14 incremental builds are all serial(expecting parallel wherever applicable) We have enclosed the Xcode project("SerialReproducer.zip") and a video("Xcode14-repro.mov") demonstrating the issue in this ticket. (Repro1 as...

Overriding Xcode's llbuild with a custom llbuild binary

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A custom Swift driver toolchain can be used in Xcode by overriding the `SWIFT_EXEC` as documented in the swift-driver README (https://github.com/apple/swift-driver). As we are experimenting with llbuild changes locally, how...

Bundle libMainThreadChecker.dylib to detect main thread violations

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**Context** This PR introduces the integration of libMainThreadChecker.dylib to enhance quality checks by detecting main thread violations. By passing the feature=include_main_thread_checker flag, the library `libMainThreadChecker.dylib` will be embedded. Additionally, modifications...

Add support to use shared clangstat cache

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**Context** Source: https://reviews.llvm.org/D136651 ``` Every Clang instance uses an internal FileSystemStatCache to avoid stating the same content multiple times. However, different instances of Clang will contend for filesystem access for...

Conflicting outputs when building with --define=apple.experimental.tree_artifact_outputs=1

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When two application targets decared in the same BUILD file are built together with `--define=apple.experimental.tree_artifact_outputs=1`, each having the same bundle name, the Bazel build fails. There are no build failures...

Bazel 6.4 will be coming with BLAKE3 support - https://github.com/bazelbuild/bazel/pull/19191. This brings impressive performance improvements. Would be great for buildfarm to support this. ``` ERROR: Cannot use hash function BLAKE3...

Bug: Indexing issues with Explicit Module Builds

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### Description BwB builds are successful with explicit module feature enabled but indexing fails. When I make the paths in the explicit module map.json absolute, the indexing is successful. Looks...

Swift Macro Test - build issue - when it depends on the universal plugin

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When `swift_test` depends on the universal plugin, build fails with the following error: ``` examples/xplatform/macros/StringifyMacroTests.swift:18:8: error: missing required module 'SwiftCompilerPlugin' import StringifyMacroPlugin ^ examples/xplatform/macros/StringifyMacroTests.swift:18:8: error: missing required module 'SwiftCompilerPlugin' import...

### Description Context: https://forums.swift.org/t/metatype-casting-and-member-access-type-ambiguity-error/71456 ```swift protocol Container { } protocol SpecialisedContainer: Container { associatedtype BaseContainer: Container } func repro(root: Root.Type) { if let specialised = root as? any SpecialisedContainer.Type {...