Description
I am working with a maui app that in some instances relies on getting values through reflection.
There is a specific case where a base class has a virtual property, which is then overridden in a parent class.
In the reproduction project there is a base page with:
public virtual bool IsVisible => true;
and then a page that inherits from that base page, which then overrides the property as such:
public override bool IsVisible => true;
When creating an instance of PropertyInfo on the overriden property with
var visibleBindingPropertyInfo = GetType().GetTypeInfo().GetRuntimeProperty(nameof(IsVisible));
and then calling GetValue by
if (visibleBindingPropertyInfo != null) isVisible = (bool)visibleBindingPropertyInfo.GetValue(this);
causes the iOS app to crash.
The crash occurs when the interpreter is disabled like so;
<MtouchInterpreter>-all</MtouchInterpreter>
If the Interpreter is enabled, then it will not crash. However using the Interpreter is not an option in my case, as it downgrades the performance too much for a production build.
The crash started occurring after updating to VS 2022 with the following workload list:
Installed Workload Id Manifest Version Installation Source
---------------------------------------------------------------------
aspire 8.2.2/8.0.100 VS 17.11.35431.28
maui-windows 8.0.82/8.0.100 VS 17.11.35431.28
maccatalyst 18.0.8303/8.0.100 VS 17.11.35431.28
ios 18.0.8303/8.0.100 VS 17.11.35431.28
android 34.0.113/8.0.100 VS 17.11.35431.28
However on the previous installation of visual studio with the following workload list, it is working without crashing:
Installed Workload Id Manifest Version Installation Source
---------------------------------------------------------------------
maui-windows 8.0.40/8.0.100 VS 17.10.35013.160
maccatalyst 17.2.8053/8.0.100 VS 17.10.35013.160
ios 17.2.8053/8.0.100 VS 17.10.35013.160
android 34.0.95/8.0.100 VS 17.10.35013.160
I also noticed this ticket #96611 which mentions something similar, however that is older than the release of 8.0.40 in which it was working.
Steps to Reproduce
- Run the reproduction project on a real iOS device (not simulator).
- Press the "Click me" button on the main page.
- Crash
Link to public reproduction project repository
https://github.com/MDThomsen/BindingCrash.git
Version with bug
8.0.82 SR8.2
Is this a regression from previous behavior?
Yes, this used to work in .NET MAUI
Last version that worked well
8.0.40 SR5
Affected platforms
iOS
Affected platform versions
18.0.8303/8.0.100
Did you find any workaround?
No response