Sébastien StormacqandSebastien Stormacq 4a917a74de Fix crash on Linux when testing the archive plugin (#641) ...

Fix a rare crash in CI on the archive plugin.

The crash is a race condition in `PluginUtils.swift`'s execute method.
The code set a `terminationHandler` on the `Process` that called
`readToEnd()` on the pipe, while simultaneously the `readabilityHandler`
could still be firing on the same pipe's file handle. On Linux (x86_64,
Ubuntu 24.04 in CI), this race corrupts memory during Swift runtime
metadata resolution (`swift_conformsToProtocol,
_swift_getGenericMetadata`), which manifests as the `SIGSEGV` we're
seeing in `_dispatch_event_loop_drain`.

The fix:

I removed the `terminationHandler` entirely. Since `waitUntilExit()` is
already called synchronously, we know the process is done.
After `waitUntilExit()`, we set `readabilityHandler = nil` to stop the
async reads, then do one final `readToEnd()` on the output queue to
drain any remaining data.
This eliminates the race between the readability handler and the
termination handler competing over the same file handle.

Co-authored-by: Sebastien Stormacq <stormacq@amazon.lu>

2026-02-16 12:18:11 +01:00

..

AWSLambdaPackager

Fix crash on Linux when testing the archive plugin (#641)

2026-02-16 12:18:11 +01:00

Documentation.docc/Proposals

change references from /swift-server to /awslabs (#591)

2025-10-17 16:46:58 +02:00