Bug 26352 - Listing Assembly types fails unless assembly has been previously used
Summary: Listing Assembly types fails unless assembly has been previously used
Status: RESOLVED ANSWERED
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 8.6.0
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2015-01-23 12:57 UTC by Cody Beyer (MSFT)
Modified: 2015-01-23 16:32 UTC (History)
2 users (show)

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

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Status:
RESOLVED ANSWERED

Description Cody Beyer (MSFT) 2015-01-23 12:57:38 UTC
### Description

If I try to find a type by Assembly.ExportedTypes newly added types classes or enums will not be found unless the type is explicitely used before. This problem is only on iOS devices, not in iOS device emulator and not on Android. 

### Code

>Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
>foreach (var a in assemblies)
>{
>	Console.WriteLine (a.FullName);
>	Console.WriteLine (a.Location);
>	if (!a.FullName.StartsWith("ViewerCommon")) continue;
>	List<Type> types = a.ExportedTypes.ToList();
>	foreach (var type in types)
>	{
>		Console.WriteLine (type.FullName);
>	}
>}


### Errors

No errors reported

### Expected Results

All types should be listed, whether or not they have been used

### Actual Results

Only types that have been used are listed

### Version

=== Xamarin Studio ===

Version 5.7 (build 661)
Installation UUID: 3e4348fa-e0b3-46a4-8426-58f27e19159e
Runtime:
	Mono 3.12.0 ((detached/a813491)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 312000068

=== Apple Developer Tools ===

Xcode 6.1.1 (6611)
Build 6A2008a

=== Xamarin.iOS ===

Version: 8.6.0.51 (Business Edition)
Hash: dfb682f
Branch: 
Build date: 2015-01-08 13:39:32-0500

=== Xamarin.Android ===

Version: 4.20.0.28 (Business Edition)
Android SDK: /Users/codybeyer/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		2.1    (API level 7)
		2.2    (API level 8)
		2.3    (API level 10)
		3.1    (API level 12)
		4.0    (API level 14)
		4.0.3  (API level 15)
		4.1    (API level 16)
		4.2    (API level 17)
		4.3    (API level 18)
		4.4    (API level 19)
		4.4.87 (API level 20)
		5.0    (API level 21)
Java SDK: /usr
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

=== Xamarin.Mac ===

Version: 1.10.0.18 (Business Edition)

=== Build Information ===

Release ID: 507000661
Git revision: b70bab61da996da29045ea8ee8aed1a6faedbe78
Build date: 2015-01-05 16:31:31-05
Xamarin addins: 82f6c71490562d6cd125a09287f441902fdac3d7

=== Operating System ===

Mac OS X 10.10.1
Darwin Codys-MBP.router 14.0.0 Darwin Kernel Version 14.0.0
    Fri Sep 19 00:26:44 PDT 2014
    root:xnu-2782.1.97~2/RELEASE_X86_64 x86_64
Comment 2 Sebastien Pouliot 2015-01-23 16:32:16 UTC
That's normal (and a feature). 

There's no JIT, GAC or a directory with all assemblies, available on devices.

IOW the AOT process is done on all (and only) the code that is referenced by the application. All extra code (without a reference) won't be part of the bundle.

This is separate from the linker, which will remove stuff from assemblies (not the assemblies).