Crash on Windows

[paulrouget]

We package Servo within a UWP app, which does not allow access to the file system.
When using canvas.fillText() in Servo, it crashes: servo/servo#26015

Enabling the UWP capability broadFileSystemAccess solves the issue, but this will make it harder to submit the app to the Windows Store.

[paulrouget]

Enabling the UWP capability broadFileSystemAccess solves the issue

Actually I'm not sure about that capability. Still experimenting.

[paulrouget]

I'm actually not sure it's a sandbox issue.

I see that fontkit is looking for these files for SansSerif fonts:

"C:\\WINDOWS\\FONTS\\ARIAL.TTF"
"C:\\WINDOWS\\FONTS\\ARIALI.TTF"
"C:\\WINDOWS\\FONTS\\ARIALBD.TTF"
"C:\\WINDOWS\\FONTS\\ARIALBI.TTF"
"C:\\WINDOWS\\FONTS\\ARIBLK.TTF"
"C:\\WINDOWS\\FONTS\\ARIAL.TTF"
"C:\\WINDOWS\\FONTS\\ARIALBD.TTF"
"C:\\WINDOWS\\FONTS\\ARIBLK.TTF"

… which do not exist.

I think font-kit should not unwrap here, and just push if the result is Ok.

Servo should also do something better if not fonts are found.