Unity Issue Tracker - Unity leaks memory when adding/removing breakpoints while debugging with Visual Studio

Fixed in 2019.3

Votes

0

Found in

2018.1.0a1

2018.3.0a1

2019.1.0a1

2019.2.0a1

2019.3.0a1

2019.3.0a9

Issue ID

1170031

Regression

No

Unity leaks memory when adding/removing breakpoints while debugging with Visual Studio

Mono

-

Jul 16, 2019

How to reproduce:
1. Open the "VS_Leak.zip" project
3. Open the "NewBehaviurScript.cs" script
4. Attach Unity Debugger via Visual Studio
5. Open the Task Manager
6. In VS, keep adding/removing a breakpoint on one line
7. Observe the rising RAM usage

Actual result: Unity leaks memory. (gif attached)
Expected result: Unity doesn't leak memory.

Reproducible with: 2019.3.0a10, 2019.2.0b10, 2019.1.10f1, 2018.4.4f1, 2018.1.9f, 2017.4.30f1.

Notes:
The leak doesn't reproduce if using C# 3.5.
The leak is a lot smaller in Unity 2019.3 (leaks around 0.1MB per click)

--------------------------------------------
Fixed in 2020.1.0a2. 2019.3.0b3.

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