Bug 42410 - String Interpolation available even when langversion < 6
Summary: String Interpolation available even when langversion < 6
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: 4.4.0 (C7)
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Marek Safar
Depends on:
Reported: 2016-07-07 21:27 UTC by Jonathan Chambers
Modified: 2016-07-26 15:55 UTC (History)
2 users (show)

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:

Description Jonathan Chambers 2016-07-07 21:27:14 UTC
String interpolation is available even when langversion is set to a version < 6.

The following code compiles just fine with 'mcs -langversion:4':

using System;

public class Program
	public static void Main()
		// the following line does produces a compiler error with -langversion:4
		//var s = nameof(Main);
		// the following line does not produce a compiler error with -langversion:4
		Console.WriteLine($"I should not compile");
Comment 1 Marek Safar 2016-07-26 15:55:22 UTC
Fixed in master and Mono 4.6