Bug 12811 - Enum list of string generic method AOT crash
Summary: Enum list of string generic method AOT crash
Status: RESOLVED FIXED
Alias: None
Product: iOS
Classification: Xamarin
Component: XI runtime ()
Version: 6.2.x
Hardware: Macintosh All
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2013-06-21 07:43 UTC by Dylan
Modified: 2013-07-04 08:57 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED FIXED

Description Dylan 2013-06-21 07:43:45 UTC
I have a helper method which takes an Enum, and returns an IEnumerable of all the items in the enum type. However this causes an AOT crash when running on the device. 

The method:

        public static IEnumerable<string> GetStringList<T>() where T : struct, IConvertible
        {
            return Enum.GetValues(typeof(T)).Cast<T>().Select(x=>x.ToString());
        }


Usage:
foreach(var e in EnumHelper.GetStringList<TestEnum>())
{
....
}


However if I replace the usage to something like this is works:
foreach(var e in Enum.GetValues(typeof(TestEnum)).Cast<TestEnum>().Select(x=>x.ToString()))
{
....
}
Comment 1 Sebastien Pouliot 2013-07-04 08:57:42 UTC
I added both tests case to our unit tests. Both variations works fine with 6.3.7 (beta)

The 6.3.x series has support for generics over value-types (including enums). It's still a beta but will soon become the next stable series for Xamarin.iOS.