Opening a folder with .cs files crashes Godot (Mono related?)

[NathanWarden]

Godot 3.0 git HEAD 64 bit

Manjaro Linux 64 bit
Ubuntu 17.10b2
Windows 10

Issue description:

When navigating into a CSharp scripts folder Godot crashes if there's a .mono folder and if there are no icons of the scripts in the ~/.godot/tmp folder.

@neikeq I believe this is Mono related as a lot of Mono items are in the crash log, deleting the .mono folder fixes the crash, or if I simply rename files from having .cs to .gd (and leave the .mono folder there) it no longer crashes.

Steps to reproduce:

edit: Okay, I've narrowed it down a bit more. I tried it on Ubuntu 17.10b2 and I was able to navigate to the folder as long as I didn't first make a build.

I was then able to cause it to break again by:

1. Deleting the ~/.godot/tmp folder
2. Make a build (F5/F6)
3. Restart the editor
4. Navigate to the Scripts folder
   Crash

I was able to navigate again to the folder by:

1. Deleting the .mono folder for the project
2. Restart the editor
3. Navigate to the folder
   No crash

So, it seems somehow related to failing to generate icons when there's a successful build in the .mono folder?

I've made a video: DirectoryOpenCrash.zip

Link to minimal example project:

edit: Here's a simple project:

Test_Proj_CS.zip

edit: Removed the crash dump as you should now be able to get your own now that the bug is reproducible.

[NathanWarden]

edit: I've moved the steps here to the top...

Okay, I've narrowed it down a bit more. I tried it on Ubuntu 17.10b2 and I was able to navigate to the folder as long as I didn't first make a build.

I was then able to cause it to break again by:

1. Deleting the ~/.godot/tmp folder
2. Make a build (F5/F6)
3. Restart the editor
4. Navigate to the Scripts folder
   Crash

I was able to navigate again to the folder by:

1. Deleting the .mono folder for the project
2. Restart the editor
3. Navigate to the folder
   No crash

So, it seems somehow related to failing to generate icons when there's a successful build in the .mono folder?

Okay, time to try it on Windows again since I didn't try these steps before.

[NathanWarden]

Yep, happens on Windows too.

[NathanWarden]

Okay, I was able to reproduce the problem with the steps above in a simple project. :)

Test_Proj_CS.zip

[neikeq]

Does this still happen after #11845?

[NathanWarden]

Unfortunately it's still doing it.

[neikeq]

All right, just wanted to make sure it was not related to the assembly loading error at startup. I'll test tomorrow.

[NathanWarden]

Awesome, thanks :)