[Mono-bugs] [Bug 31420][Nor] Changed - expressions with enum types

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Changed by miguel@ximian.com.

http://bugzilla.ximian.com/show_bug.cgi?id=31420

--- shadow/31420	Tue Oct  1 13:47:02 2002
+++ shadow/31420.tmp.10722	Sat Oct 19 17:51:24 2002
@@ -1,13 +1,13 @@
 Bug#: 31420
 Product: Mono/MCS
 Version: unspecified
 OS: other
 OS Details: 
-Status: NEW   
-Resolution: 
+Status: RESOLVED   
+Resolution: FIXED
 Severity: Unknown
 Priority: Normal
 Component: Misc
 AssignedTo: miguel@ximian.com                            
 ReportedBy: lupus@ximian.com               
 QAContact: mono-bugs@ximian.com
@@ -40,6 +40,15 @@
 //              int c3 = a + b;
 //              int c3 = a + 1;
                 E c3 = a + 1;
 //              E c4 = a + b;
         }
 }
+
+------- Additional Comments From miguel@ximian.com  2002-10-19 17:51 -------
+Thanks for the bug report.  The bug was simple, we were not handling
+the "U operator - (E x, E y)".  The semantics are interesting, but not
+that complex.  The rationale seems to be that it is valid to compute
+the difference between enumeration values, but it is not valid to
+return an enum value by addition.
+
+All the errors and those cases are now handled by the compiler.