[Mono-bugs] [Bug 72476][Wis] New - Odd nullref in anon delegates

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Changed by bmaurer@users.sf.net.

http://bugzilla.ximian.com/show_bug.cgi?id=72476

--- shadow/72476	2005-02-11 00:33:27.000000000 -0500
+++ shadow/72476.tmp.26775	2005-02-11 00:33:27.000000000 -0500
@@ -0,0 +1,95 @@
+Bug#: 72476
+Product: Mono: Compilers
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: C#
+AssignedTo: miguel@ximian.com                            
+ReportedBy: bmaurer@users.sf.net               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Odd nullref in anon delegates
+
+The following code:
+
+using System;
+using System.Collections;
+using Gtk;
+
+class A {
+	
+	public int AppendPage (Widget sc)
+	{
+		Label l = new Label ("x");
+		int pos = Blah (sc, l);
+		
+		EventHandler x = delegate {
+			sc.Dispose ();
+		};
+		
+		return pos;
+	}
+	
+	int Blah (Widget sc, Label l)
+	{
+		return 1;
+	}
+	
+	static void Main ()
+	{
+	}
+}
+
+Gets
+
+[benm@omega benm]$ mcs x.cs -pkg:gtk-sharp-2.0
+x.cs(14) warning CS0219: The variable 'x' is assigned but its value is
+never used
+ 
+Unhandled Exception: System.NullReferenceException: Object reference not
+set to an instance of an object
+in <0x000e7> Mono.CSharp.CaptureContext:EmitParameterInstance
+(Mono.CSharp.EmitContext,string)
+in <0x00065> Mono.CSharp.CaptureContext:EmitParameter
+(Mono.CSharp.EmitContext,string)
+in <0x00016> Mono.CSharp.EmitContext:EmitParameter (string)
+in <0x0003c> Mono.CSharp.ParameterReference:Emit (Mono.CSharp.EmitContext)
+in <0x00231> Mono.CSharp.Argument:Emit (Mono.CSharp.EmitContext)
+in <0x0020b> Mono.CSharp.Invocation:EmitArguments
+(Mono.CSharp.EmitContext,System.Reflection.MethodBase,System.Collections.ArrayList,bool,Mono.CSharp.LocalTemporary)
+in <0x004f0> Mono.CSharp.Invocation:EmitCall
+(Mono.CSharp.EmitContext,bool,bool,Mono.CSharp.Expression,System.Reflection.MethodBase,System.Collections.ArrayList,Mono.CSharp.Location,bool,bool)
+in <0x00024> Mono.CSharp.Invocation:EmitCall
+(Mono.CSharp.EmitContext,bool,bool,Mono.CSharp.Expression,System.Reflection.MethodBase,System.Collections.ArrayList,Mono.CSharp.Location)
+in <0x00073> Mono.CSharp.Invocation:Emit (Mono.CSharp.EmitContext)
+in <0x0003e> Mono.CSharp.LocalVariableReference:EmitAssign
+(Mono.CSharp.EmitContext,Mono.CSharp.Expression,bool,bool)
+in <0x00173> Mono.CSharp.Assign:Emit (Mono.CSharp.EmitContext,bool)
+in <0x00012> Mono.CSharp.Assign:EmitStatement (Mono.CSharp.EmitContext)
+in <0x00011> Mono.CSharp.StatementExpression:DoEmit (Mono.CSharp.EmitContext)
+in <0x00024> Mono.CSharp.Statement:Emit (Mono.CSharp.EmitContext)
+in <0x000a2> Mono.CSharp.Block:DoEmit (Mono.CSharp.EmitContext)
+in <0x0023d> Mono.CSharp.Block:Emit (Mono.CSharp.EmitContext)
+in <0x000a2> Mono.CSharp.Block:DoEmit (Mono.CSharp.EmitContext)
+in <0x0023d> Mono.CSharp.Block:Emit (Mono.CSharp.EmitContext)
+in <0x0001a> Mono.CSharp.EmitContext:EmitResolvedTopBlock
+(Mono.CSharp.ToplevelBlock,bool)
+in <0x0005f> Mono.CSharp.EmitContext:EmitTopBlock
+(Mono.CSharp.ToplevelBlock,Mono.CSharp.InternalParameters,Mono.CSharp.Location)
+in <0x0037a> Mono.CSharp.MethodData:Emit
+(Mono.CSharp.TypeContainer,Mono.CSharp.Attributable)
+in <0x00022> Mono.CSharp.Method:Emit ()
+in <0x0057a> Mono.CSharp.TypeContainer:EmitType ()
+in <0x003e5> Mono.CSharp.RootContext:EmitCode ()
+in <0x00c3c> Mono.CSharp.Driver:MainDriver (string[])
+in <0x0000f> Mono.CSharp.Driver:Main (string[])
+
+
+(sorry about the gtk# dep, I had a really hard time killing that from the
+test, not sure why, this test was very fragile)