https://github.com/igor-makarov/demolargenumberofswiftfiles

Swift compiler bug repro - lots of files cause the driver to lock up
https://github.com/igor-makarov/demolargenumberofswiftfiles

Last synced: 3 months ago
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Swift compiler bug repro - lots of files cause the driver to lock up

• Host: GitHub
• URL: https://github.com/igor-makarov/demolargenumberofswiftfiles
• Owner: igor-makarov
• Created: 2019-12-08T16:15:02.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-12-08T16:24:36.000Z (over 5 years ago)
• Last Synced: 2025-01-20T15:48:52.457Z (5 months ago)
• Language: Swift
• Size: 644 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Incremental compile of one file out of 3000 hangs Swift Compiler Driver

## Bug reproduction

* Build the project several times until the build system is happy.

* Modify `DemoLargeNumberOfSwiftFiles/Dummy-Incremental.swift`, e.g. add a newline.

* Build again (incrementally).

## Observe the build times

During the build, compile and swiftmodule take just a few seconds:

![during](screenshot-during.png)

Then the build hangs and takes a lot more time. I believe this might be the driver:

![after](screenshot-after.png)