Memory leak in sourcekit-lsp on Linux #84380
Description
Description
When editing the LSP consumes memory and never seems to free any previously allocated data. I attached a video showing this behavior. It only shows the LSP consuming up to 300MB, but I've repeatedly seen it consume multiple gigabytes on just a few hundred line projects.
I only noticed this bug after the LSP consumed all my RAM and crashed the system multiple times.
I'm not used to making bug reports, so I'm sorry if I missed some important information.
Reproduction
Installed Swift from https://www.swift.org/install/linux/ using the swiftly option
Installed the official Swift extensions for VSCode: https://marketplace.visualstudio.com/items?itemName=swiftlang.swift-vscode
Editing a any Swift file in VSCode caused the bug to happen
Expected behavior
Expected behavior: Properly freeing memory.
Environment
$ swift --version Swift version 6.0 (swift-6.0-RELEASE) Target: x86_64-unknown-linux-gnu $ uname -a Linux prometheus 6.14.0-29-generic #29-Ubuntu SMP PREEMPT_DYNAMIC Thu Aug 7 18:32:38 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux $ code --version 1.104.1 0f0d87fa9e96c856c5212fc86db137ac0d783365 x64