In mcs:

	Fix parts of #63202.
	* expression.cs (UnaryMutator.ResolveOperator): Remove redundant
	lookup of operator in base type.  Ensure that all checks happen
	when the operator resolves to an "op_..." method.

In errors:
	* cs0187-1.cs, cs0187-2.cs: New tests from #63202.

svn path=/trunk/mcs/; revision=40750

1 files changed, 14 insertions, 0 deletions

diff --git a/mcs/errors/cs0187-2.cs b/mcs/errors/cs0187-2.cs
new file mode 100644
index 00000000000..f00adcc9e8f
--- /dev/null
+++ b/mcs/errors/cs0187-2.cs
@@ -0,0 +1,14 @@
+// cs0187.cs: No such operator '++' defined for type 'object'
+// Line: 9
+
+using System;
+using System.Collections;
+
+class Test {
+	public static void Main(string[] args) {
+		ArrayList al = new ArrayList();
+		al[0] = 0;
+		
+		Console.WriteLine((al[0])++);
+	}
+}