Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/errors/cs0019-72.cs

@@ -0,0 +1,10 @@
+// CS0019: Operator `??' cannot be applied to operands of type `void' and `throw expression'
+// Line: 20
+
+class C
+{
+	public static void Main ()
+	{
+		var s = Main () ?? throw null;
+	}
+}

mcs/errors/cs0128-3.cs

@@ -0,0 +1,16 @@
+// CS0128: A local variable named `x' is already defined in this scope
+// Line: 9
+
+class X
+{
+	public static void Main ()
+	{
+		Foo (out int x);
+		Foo (out int x);
+	}
+
+	static void Foo (out int arg)
+	{
+		arg = 2;
+	}
+}

mcs/errors/cs0128-4.cs

@@ -0,0 +1,13 @@
+// CS0128: A local variable named `s' is already defined in this scope
+// Line: 12
+
+class C
+{
+	public static void Main ()
+	{
+		object o = null;
+
+		var x1 = o is string s;
+		var x2 = o is string s;
+	}
+}

mcs/errors/cs0136-20.cs

@@ -0,0 +1,13 @@
+// CS0136: A local variable named `s' cannot be declared in this scope because it would give a different meaning to `s', which is already used in a `parent or current' scope to denote something else
+// Line: 10
+
+internal class Program
+{
+	public static void Main ()
+	{
+		object o = null;
+		if (o is string s) {
+			int s = 1;
+		}
+	}
+}

mcs/errors/cs0155-5.cs

@@ -0,0 +1,7 @@
+// CS0155: The type caught or thrown must be derived from System.Exception
+// Line: 9
+
+class X
+{
+    public int Test () => throw "";
+}

mcs/errors/cs0162-21.cs

@@ -0,0 +1,19 @@
+// CS0162: Unreachable code detected
+// Line: 12
+// Compiler options: -warnaserror -warn:2
+
+using System;
+
+class X
+{
+    void Test ()
+    {
+        var x = true ? throw new NullReferenceException () : 1;
+        x = 2;
+        return;
+    }
+
+	static void Main () 
+	{
+	}
+}

mcs/errors/cs0165-56.cs

@@ -0,0 +1,14 @@
+// CS0165: Use of unassigned local variable `s'
+// Line: 12
+
+class X
+{
+    static string Foo (object arg)
+    {
+        if (arg is string s) {
+
+        }
+
+        return s;
+    }
+}

mcs/errors/cs0165-57.cs

@@ -0,0 +1,54 @@
+// CS0165: Use of unassigned local variable `v'
+// Line: 52
+
+struct Vector3
+{
+	int field1, field2, field3;
+}
+
+public class C
+{
+	void Update ()
+	{
+		int v1 = 0;
+		int v2 = 0;
+		int v3 = 0;
+		int v4 = 0;
+		int v5 = 0;
+		int v6 = 0;
+		int v7 = 0;
+		int v8 = 0;
+		int v9 = 0;
+		int v10 = 0;
+		int v11 = 0;
+		int v12 = 0;
+		int v13 = 0;
+		int v14 = 0;
+		int v15 = 0;
+		int v16 = 0;
+		int v17 = 0;
+		int v18 = 0;
+		int v19 = 0;
+		int v20 = 0;
+		int v21 = 0;
+		int v22 = 0;
+		int v23 = 0;
+		int v24 = 0;
+		int v25 = 0;
+		int v26 = 0;
+		int v27 = 0;        
+		int v29;
+
+		Vector3 v;
+		if (v1 == 0)
+		{
+			v = new Vector3 ();
+		}
+		else if (v2 >= 0.5)
+		{
+			v = new Vector3 ();
+		}
+
+		System.GC.KeepAlive (v);
+	}
+}

mcs/errors/cs0165-58.cs

@@ -0,0 +1,49 @@
+// CS0165: Use of unassigned local variable `v'
+// Line: 52
+
+struct Vector3
+{
+	int field1, field2, field3;
+}
+
+public class C
+{
+	void Update ()
+	{
+		int v1 = 0;
+		int v2 = 0;
+		int v3 = 0;
+		int v4 = 0;
+		int v5 = 0;
+		int v6 = 0;
+		int v7 = 0;
+		int v8 = 0;
+		int v9 = 0;
+		int v10 = 0;
+		int v11 = 0;
+		int v12 = 0;
+		int v13 = 0;
+		int v14 = 0;
+		int v15 = 0;
+		int v16 = 0;
+		int v17 = 0;
+		int v18 = 0;
+		int v19 = 0;
+		int v20 = 0;
+		int v21 = 0;
+		int v22 = 0;
+		int v23 = 0;
+		int v24 = 0;
+		int v25 = 0;
+		int v26 = 0;
+		int v27 = 0;        
+		int v29;
+
+		Vector3 v;
+		while (v8 != 0) {
+			v = new Vector3 ();
+		}
+
+		System.GC.KeepAlive (v);
+	}
+}

mcs/errors/cs0173-6.cs

@@ -0,0 +1,10 @@
+// CS0173: Type of conditional expression cannot be determined because there is no implicit conversion between `throw expression' and `throw expression'
+// Line: 8
+
+class C
+{
+	public static void Test (bool b)
+	{
+		var s = b ? throw null : throw null;
+	}
+}

mcs/errors/cs0208-19.cs

@@ -0,0 +1,20 @@
+// CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type `CS208.Foo'
+// Line: 17
+// Compiler options: -unsafe
+
+namespace CS208
+{
+	public struct Foo
+	{
+		public string PP { get; set; }
+	}
+
+	public class Bar
+	{
+		unsafe static void Main ()
+		{			
+			Foo f = new Foo ();
+			void *s = &f;
+		}
+	}
+}

mcs/errors/cs0411-25.cs

@@ -0,0 +1,16 @@
+// CS0411: The type arguments for method `C.Foo<T>(System.Func<T>)' cannot be inferred from the usage. Try specifying the type arguments explicitly
+// Line: 10
+
+using System;
+
+public class C
+{
+    public static void Main ()
+    {
+        Foo (() => throw null);
+    }
+
+    static void Foo<T> (Func<T> arg)
+    {
+    }
+}

mcs/errors/cs0535-7.cs

@@ -0,0 +1,40 @@
+// CS0535: `CC' does not implement interface member `IA.Coordinate.set'
+// Line: 33
+
+using System;
+
+public interface IA
+{
+	object Coordinate {
+		get;
+		set;
+	}
+}
+
+public abstract class CA : IA
+{
+	public abstract object Coordinate {
+		get;
+		set;
+	}
+}
+
+public  partial class CB : CA
+{
+	public override object Coordinate {
+		get {
+			throw new NotImplementedException ();
+		}
+		set {
+		}
+	}
+}
+
+public class CC : CB, IA
+{
+	public new object Coordinate {
+		get {
+			throw new NotImplementedException ();
+		}
+	}
+}

mcs/errors/cs0535-8.cs

@@ -0,0 +1,40 @@
+// CS0535: `CC' does not implement interface member `IA.this[int].set'
+// Line: 33
+
+using System;
+
+public interface IA
+{
+	object this[int arg] {
+		get;
+		set;
+	}
+}
+
+public abstract class CA : IA
+{
+	public abstract object this[int arg] {
+		get;
+		set;
+	}
+}
+
+public  partial class CB : CA
+{
+	public override object this[int arg] {
+		get {
+			throw new NotImplementedException ();
+		}
+		set {
+		}
+	}
+}
+
+public class CC : CB, IA
+{
+	public new object this[int arg] {
+		get {
+			throw new NotImplementedException ();
+		}
+	}
+}

mcs/errors/cs0815-7.cs

@@ -1,16 +0,0 @@
-// CS0815: An implicitly typed local variable declaration cannot be initialized with `void'
-// Line: 8
-// Compiler options: -langversion:experimental
-
-class X
-{
-	public static void Main ()
-	{
-		Foo (out var x = Main ());
-	}
-
-	static void Foo (out int i)
-	{
-		i = 0;
-	}
-}

mcs/errors/cs1031-3.cs

@@ -0,0 +1,18 @@
+// CS1031: Type expected
+// Line: 16
+
+public class B<Y>  where Y: B<Y>
+{
+}
+
+public class A<X>: B<A<X>>
+{
+}
+
+public class Repro
+{
+	public static void Main (string[] args)
+	{
+		var h = typeof (B<A<>>);
+	}
+}

mcs/errors/cs1061-15.cs

@@ -1,4 +1,4 @@
-// CS1061: Type `int' does not contain a definition for `GetValueOrDefault' and no extension method `GetValueOrDefault' of type `int' could be found. Are you missing an assembly reference?
+// CS1061: Type `int' does not contain a definition for `GetValueOrDefault' and no extension method `GetValueOrDefault' of type `int' could be found. Are you missing `System.Collections.Generic' using directive?
 // Line: 9
 
 class C

mcs/errors/cs1503-17.cs

@@ -1,15 +0,0 @@
-// CS1501: Argument `#1' cannot convert `ref string' expression to type `ref int'
-// Line: 8
-// Compiler options: -langversion:experimental
-
-class C
-{
-	public static void Main ()
-	{
-		Foo (ref var x = "");
-	}
-
-	static void Foo (ref int i)
-	{
-	}
-}

mcs/errors/cs1617.cs

@@ -1,3 +1,3 @@
-// CS1617: Invalid -langversion option `ISO'. It must be `ISO-1', `ISO-2', Default or value in range 1 to 6
+// CS1617: Invalid -langversion option `ISO'. It must be `ISO-1', `ISO-2', Default or value in range 1 to 7
 // Line: 0
 // Compiler options: -langversion:ISO

mcs/errors/cs1621-2.cs

@@ -0,0 +1,21 @@
+// CS1621: The yield statement cannot be used inside anonymous method blocks
+// Line: 12
+
+using System;
+using System.Collections;
+
+public class Test
+{
+	public IEnumerator Foo ()
+	{
+		Call (() => {
+			yield break;
+		});
+
+		yield break;
+	}
+
+	void Call (Action a)
+	{
+	}
+}