CorValRef.IsAlive() should return true if val==null, because it's valid value. Before this all void methods were evaluating for two times because "void" method evaluates to null result in eval which was accepted as invalid .

nerzhulart · nerzhulart · commit 47cadb6f0f90 · 2017-03-11T21:23:57.000+03:00
(cherry picked from commit b8e6e00)
diff --git a/Mono.Debugging.Win32/CorValRef.cs b/Mono.Debugging.Win32/CorValRef.cs
@@ -47,7 +47,7 @@ public CorValRef (ValueLoader loader)
 		bool IsAlive ()
 		{
 			if (val == null)
-				return false;
+				return true;
 			try {
 				// ReSharper disable once UnusedVariable
 

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,7 @@ public CorValRef (ValueLoader loader)`
`47`	`47`	`bool IsAlive ()`
`48`	`48`	`{`
`49`	`49`	`if (val == null)`
`50`		`- return false;`
	`50`	`+ return true;`
`51`	`51`	`try {`
`52`	`52`	`// ReSharper disable once UnusedVariable`
`53`	`53`