Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/errors/cs1940-2.cs

@@ -0,0 +1,29 @@
+// CS1940: Ambiguous implementation of the query pattern `Select' for source type `string[]'
+// Line: 11
+
+using System;
+using System.Collections.Generic;
+
+class Multiple
+{
+	public static void Main ()
+	{
+		var q = from x in new [] { "a", "b", "c" } select x;
+	}
+}
+
+static class Y
+{
+	public static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector)
+	{
+		return null;
+	}
+}
+
+static class X
+{
+	public static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector)
+	{
+		return null;
+	}
+}