Imported Upstream version 5.10.0.69

Former-commit-id: fc39669a0b707dd3c063977486506b6793da2890

mcs/tests/gtest-409.cs

@@ -1,3 +1,4 @@
+// Compiler options: -langversion:latest
 using System;
 
 //
@@ -175,6 +176,11 @@ public class ConditionalParsing
 		var x = args ?.2f : -.2f;
 	}
 
+	void Test_23 (string args)
+	{
+		var x = args == null ? default : 1;
+	}
+
 	static void Helper<T> (T arg)
 	{
 	}

mcs/tests/known-issues-interp-net_4_x

@@ -15,6 +15,7 @@ gtest-etree-09.cs
 test-269.cs
 test-270.cs
 test-399.cs
+test-404.cs
 test-704.cs
 test-811.cs
 test-async-17.cs

mcs/tests/test-default-02.cs

@@ -2,20 +2,32 @@
 
 class C
 {
-    static void Main()
-    {
-        M (default, 1);
+	static void Main()
+	{
+		M (default, 1);
 
-        M2 (default);
-        M2 (null);        
-    }
+		M2 (default);
+		M2 (null);
+
+		var res = Test (default);
+	}
 
 
-    static void M<T> (T x, T y)
-    {
-    }
+	static void M<T> (T x, T y)
+	{
+	}
+
+	static void M2 (params object[] x)
+	{        
+	}
+
+	static byte[] Test (S<byte> x)
+	{
+		return null;
+	}
+}
+
+struct S<T>
+{
 
-    static void M2 (params object[] x)
-    {        
-    }
 }

mcs/tests/test-discards-01.cs

@@ -0,0 +1,36 @@
+using System;
+
+class X
+{
+	public static void Main ()
+	{
+		string s = null;
+
+		_ = 1;
+		{
+			char _ = '4';
+		}
+
+		_ = TestValue ();
+
+		_ = _ = s;
+
+		byte k1;
+		var s1 = (k1, _) = (1, s);
+
+		Func<object> l1 = () => _ = (_, _) = (1, s);
+
+		TryGetValue (out _);
+	}
+
+	static bool TryGetValue (out int arg)
+	{
+		arg = 3;
+		return true;
+	}
+
+	static int TestValue ()
+	{
+		return 4;
+	}
+}

mcs/tests/test-tuple-09.cs

@@ -0,0 +1,19 @@
+using System;
+
+class TupleDeconstructionDeclaration
+{
+	public static int Main ()
+	{
+		(string s, long l) = GetValues ();
+		(var vs, var vl) = GetValues ();
+		(object o, var vl2) = GetValues ();
+		(string ds, _) = GetValues ();
+
+		return 0;
+	}
+
+	static (string, long) GetValues ()
+	{
+		return ("a", 3);
+	}
+}

mcs/tests/ver-il-net_4_x.xml.REMOVED.git-id

@@ -1 +1 @@
-5adff6190605aca793479b15f0d101080c53ab9a
+53b3539833656acb93be1ac56ce37dd74ae46aea