Segmentation fault when creating a Text object in Python

[mitchgrout]

Bug Description

When creating a window containing a Text object, attempting to show the window via Python results in a segmentation fault.

This could potentially relate to #8251

Reproducible Code (if applicable)

// app.slint
export component App inherits Window {
  Text { text: "foo"; }
}

// app.py
// import slint
// class App(slint.loader.app.App):
//   pass
// app = App()
// app.run()

Environment Details

• Slint Version: 1.11.0a1
• Platform/OS: Windows 10 (x64)
• Programming Language: Python 3.13.3
• Backend/Renderer: Unsure

Product Impact

Non-critical, just exploring the slint API for Python

[mitchgrout]

Looks like it may be related to text-rendering in general:

• No issue with Rectangle
• Button / CheckBox / ... objects without a text value are OK
• TextInput causes a crash, but not a segmentation fault
• ComboBox in general causes a segmentation fault

[tronical]

Darn. I'm trying this on Windows 10 (x64) as well, and it works for me. You wrote:

causes a crash, but not a segmentation fault

Could you paste any message you see?

[mitchgrout]

Darn. I'm trying this on Windows 10 (x64) as well, and it works for me. You wrote:

causes a crash, but not a segmentation fault

Could you paste any message you see?

Nothing is emitted to stdout nor stderr; are there any internals logs/etc that I could attach to?

My guess is that there's some dependency that slint is expecting to be present on my system but is missing, or maybe is the wrong version. The odd thing is that the preview via VSCode seems to render just fine.