Bug 22393 - Cannot reference generic types defined in C# interactive
Summary: Cannot reference generic types defined in C# interactive
Status: RESOLVED FIXED
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: 3.6.0
Hardware: All All
: --- normal
Target Milestone: ---
Assignee: Marek Safar
URL:
Depends on:
Blocks:
 
Reported: 2014-08-27 05:59 UTC by Eirik Tsarpalis
Modified: 2014-09-01 08:59 UTC (History)
1 user (show)

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

Notice (2018-05-24): bugzilla.xamarin.com is now in read-only mode.

Please join us on Visual Studio Developer Community and in the Xamarin and Mono organizations on GitHub to continue tracking issues. Bugzilla will remain available for reference in read-only mode. We will continue to work on open Bugzilla bugs, copy them to the new locations as needed for follow-up, and add the new items under Related Links.

Our sincere thanks to everyone who has contributed on this bug tracker over the years. Thanks also for your understanding as we make these adjustments and improvements for the future.


Please create a new report on GitHub or Developer Community with your current version information, steps to reproduce, and relevant error messages or log files if you are hitting an issue that looks similar to this resolved bug and you do not yet see a matching new report.

Related Links:
Status:
RESOLVED FIXED

Description Eirik Tsarpalis 2014-08-27 05:59:41 UTC
I found it impossible to reference a generic class defined from inside the shell. 
This issue is reproducible in both debian and OS X.
For example:
```
Mono C# Shell, type "help;" for help

Enter statements below.
csharp> public class Foo {
      >  
      > }
csharp> typeof(Foo)
Foo
csharp> public class Bar<T> {
      >  
      > }
csharp> typeof(Bar<int>)
(1,2): error CS0584: Internal compiler error: Object reference not set to an
instance of an object
```

Oddly enough, the only way I was able work around this was by giving a one-liner definition:

```
csharp> class Bar<T> { }
csharp> typeof(Bar<int>)
Bar`1[System.Int32]
```
Comment 1 Marek Safar 2014-09-01 08:59:49 UTC
Fixed in master