Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0172-3.cs

@@ -0,0 +1,31 @@
+// CS0172: Type of conditional expression cannot be determined as `ClassA' and `ClassB' convert implicitly to each other
+// Line: 29
+
+class ClassA {
+        public static implicit operator ClassB (ClassA value) {
+                return null;
+        }
+        
+        public static implicit operator ClassA (ClassB value) {
+                return null;
+        }
+}
+
+class ClassB {
+        public static implicit operator ClassA (ClassB value) {
+                return null;
+        }
+        
+        public static implicit operator ClassB (ClassA value) {
+                return null;
+        }
+}
+
+public class MainClass {
+        public static void Main() {
+                ClassA a = new ClassA();
+                ClassB b = new ClassB();
+            
+                System.Console.WriteLine(true ? a : b);
+   }
+}