[Mono-bugs] [Bug 75382][Nor] Changed - gmcs causes ArgumentNullException in ModuleBuilder for IEnumerable<T>

[bugzilla-daemon at bugzilla.ximian.com]

Please do not reply to this email- if you want to comment on the bug, go to the
URL shown below and enter your comments there.

Changed by dr.beyer at gmail.com.

http://bugzilla.ximian.com/show_bug.cgi?id=75382

--- shadow/75382	2005-06-26 04:01:37.000000000 -0400
+++ shadow/75382.tmp.31994	2005-06-26 04:13:00.000000000 -0400
@@ -1,14 +1,14 @@
 Bug#: 75382
 Product: Mono: Compilers
 Version: 1.1
-OS: 
+OS: unknown
 OS Details: Mac OS X tiger
 Status: NEW   
 Resolution: 
-Severity: 
+Severity: Unknown
 Priority: Normal
 Component: C#
 AssignedTo: mono-bugs at ximian.com                            
 ReportedBy: dr.beyer at gmail.com               
 QAContact: mono-bugs at ximian.com
 TargetMilestone: ---
@@ -119,6 +119,48 @@
 project.com
 	TLS:           normal
 	GC:            Included Boehm (with typed GC)
 	SIGSEGV      : normal
 	Globalization: normal
 mac-mini%
+
+------- Additional Comments From dr.beyer at gmail.com  2005-06-26 04:12 -------
+The bug only seems to occur if the local variables are initialized when declared.  If the 
+variables are not initialized, but rather assigned later, the code compiles successfully:
+
+//----------- t.cs v2 --------------
+using System;
+using System.Collections.Generic;
+
+namespace test
+{
+  class Test<T>
+  {
+    public IEnumerable<T> Lookup(T item)
+    {
+      byte i;
+      byte j;
+      i = 3;
+      j = 3;
+      yield return item;
+    }
+  }
+
+  class Program
+  {
+    public static void Main(string[] args)
+    {
+      Test<string> test = new Test<string>();
+      foreach(string s in test.Lookup("hi") )
+      {
+        Console.WriteLine(s);
+      }
+    }
+  }
+}
+//----------- t.cs v2 --------------
+
+gmcs t.cs
+t.cs(10) warning CS0219: The variable 'i' is assigned but its value is never used
+t.cs(11) warning CS0219: The variable 'j' is assigned but its value is never used
+Compilation succeeded - 2 warning(s)
+