[Mono-bugs] [Bug 76678][Nor] New - mcs reports CS0168 instead of CS0219 for variable assigned in if block

[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 gert.driesen at pandora.be.

http://bugzilla.ximian.com/show_bug.cgi?id=76678

--- shadow/76678	2005-11-12 05:13:09.000000000 -0500
+++ shadow/76678.tmp.26872	2005-11-12 05:13:09.000000000 -0500
@@ -0,0 +1,71 @@
+Bug#: 76678
+Product: Mono: Compilers
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: C#
+AssignedTo: rharinath at novell.com                            
+ReportedBy: gert.driesen at pandora.be               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: mcs reports CS0168 instead of CS0219 for variable assigned in if block
+
+mcs reports warning CS0168 (variable is declared by never used) instead 
+of CS0219 (variable is assigned but its value is never used), if a 
+variable is assigned in an if block only.
+
+Note: the correct warning is reported if the enclosing method returns a 
+value (not void).
+
+To reproduce, compile the following code snippet:
+
+public class Test 
+{
+	public static void Main () 
+	{
+		FixVolatileData (1);
+		FixVolatileData2 (1);
+	}
+
+	private static void FixVolatileData(int flags)
+	{
+		object forceCreation;
+
+		if (flags > 0) {
+			forceCreation = "";
+		}
+	}
+
+	private static string FixVolatileData2(int flags)
+	{
+		object forceCreation;
+
+		if (flags > 0) {
+			forceCreation = "";
+		}
+
+		return string.Empty;
+	}
+}
+
+Actual result:
+
+test.cs(13,10): warning CS0168: The variable 'forceCreation' is declared 
+but never used
+test.cs(23,10): warning CS0219: The variable 'forceCreation' is assigned 
+but its value is never used
+
+Note that the correct warning is output for the usage of 'forceCreation' 
+in the FixVolatileData2 method.
+
+Expected result:
+test.cs(13,10): warning CS0219: The variable 'forceCreation' is assigned 
+but its value is never used
+test.cs(23,10): warning CS0219: The variable 'forceCreation' is assigned 
+but its value is never used