[Mono-bugs] [Bug 31834][Nor] New - incorrect opcodes emitted for assignment to 1d array of enum

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Changed by hwang_rob@yahoo.ca.

http://bugzilla.ximian.com/show_bug.cgi?id=31834

--- shadow/31834	Sun Oct  6 14:19:59 2002
+++ shadow/31834.tmp.17738	Sun Oct  6 14:19:59 2002
@@ -0,0 +1,60 @@
+Bug#: 31834
+Product: Mono/MCS
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: hwang_rob@yahoo.ca               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: incorrect opcodes emitted for assignment to 1d array of enum
+
+Please fill in this template when reporting a bug, unless you know what you
+are doing.
+Description of Problem:
+
+When assigning a value to an element of an array of enums, incorrect
+opcodes are emitted leading the mono runtime (both the jit and the
+interpreter) to fail an assertion.
+
+Steps to reproduce the problem:
+1. Compile the following with mcs
+
+class A
+{
+        enum MyEnum {a,b,c};
+
+        public static void Main()
+        {
+                MyEnum[] arr = new MyEnum[2];
+                arr[0] = MyEnum.c;
+        }
+}
+
+
+Actual Results:
+
+If you run with mint or mono, you get assertion errors.
+Using monodis, you can see that the arr[0]=MyEnum.c assignment loads the
+address of arr[0] and then attempts to do a stelem to set the value --
+which is incorrect.
+
+Expected Results:
+
+I believe that instead of using a stelem, it should emit the correct stind
+opcode corresponding to the underlying type of the enum.
+
+How often does this happen? 
+
+Always.
+
+Additional Information:
+
+See proposed patch to expression.cs.