Bug 60900 - Error using implicit operator with Nullable
Summary: Error using implicit operator with Nullable
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: master
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Marek Safar
Depends on:
Reported: 2017-11-28 20:27 UTC by Jonathan Chambers
Modified: 2017-12-22 14:46 UTC (History)
1 user (show)

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

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Description Jonathan Chambers 2017-11-28 20:27:39 UTC
no error

Program.cs(8,21): error CS0266: Cannot implicitly convert type `Program.MyStruct?' to `int'. An explicit conversion exists (are you missing a cast?)
Compilation failed: 1 error(s), 0 warnings

Compile following code:

using System;

public class Program
    public static int Main(string[] args)
        int A = new MyStruct();
        // comment following line out and everything compiles fine
        int B = new Nullable<MyStruct> ();
        return 0;
    public struct MyStruct
        public static implicit operator int(Nullable<MyStruct> s) { return 0; }
Comment 1 Marek Safar 2017-12-22 14:46:14 UTC
Fixed in master