Fix #77006.

* mcs/class.cs (TypeContainer.Mark_HasEquals): New.
(TypeContainer.Mark_HasGetHashCode): New.
(ClassPart): Override them.
(MethodCore.CheckBase): Use them instead of referring to Parent.Methods.
* tests/test-479.cs: New test from #77006.
* errors/cs0659-2.cs: New test based on #77006.

svn path=/trunk/mcs/; revision=54529

1 files changed, 12 insertions, 0 deletions

diff --git a/mcs/tests/test-479.cs b/mcs/tests/test-479.cs
new file mode 100644
index 00000000000..71d7b7609a1
--- /dev/null
+++ b/mcs/tests/test-479.cs
@@ -0,0 +1,12 @@
+namespace Test{  
+    public partial class Test{  
+	public override bool Equals(object obj){  
+	    return true;  
+	}  
+	  
+	public override int GetHashCode(){  
+	    return 1;  
+	}
+	static void Main () {}
+    }  
+}