Bugfixes - no CurrentFunction in Threads pad handled, Method signature blob ignored now, dereference fail handled

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@253 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/RunningThreadsPad.cs

@@ -121,9 +121,13 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 					item.Text = e.Thread.ID.ToString();
 					item.Tag = e.Thread;
 					item.SubItems.Add(e.Thread.Name);
-					Function location = e.Thread.LastFunctionWithLoadedSymbols;
+					Function location;
+					location = e.Thread.LastFunctionWithLoadedSymbols;
+					if (location == null) {
+						location = e.Thread.LastFunction;
+					}
 					if (location != null) {
-						item.SubItems.Add(e.Thread.CurrentFunction.Name);
+						item.SubItems.Add(location.Name);
 					} else {
 						item.SubItems.Add("N/A");
 					}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Debugger/MetaData/MetaData.cs

@@ -175,7 +175,7 @@ namespace DebuggerLibrary
 
 			uint pStringLenght = 0; // Terminating character included in pStringLenght
 			IntPtr pString = IntPtr.Zero;
-			IntPtr pSigBlob;
+			//IntPtr pSigBlob;
 			uint sigBlobSize;
 			metaData.GetMethodProps(methodProps.Token,
 			                        out methodProps.ClassToken,
@@ -183,7 +183,7 @@ namespace DebuggerLibrary
 			                        pStringLenght,
 			                        out pStringLenght, // real string lenght
 			                        out methodProps.Flags,
-			                        new IntPtr(&pSigBlob),
+			                        IntPtr.Zero,//new IntPtr(&pSigBlob),
 			                        out sigBlobSize,
 			                        out methodProps.CodeRVA,
 			                        out methodProps.ImplFlags);
@@ -197,7 +197,7 @@ namespace DebuggerLibrary
 			                        pStringLenght,
 			                        out pStringLenght, // real string lenght
 			                        out methodProps.Flags,
-			                        new IntPtr(&pSigBlob),
+			                        IntPtr.Zero,//new IntPtr(&pSigBlob),
 			                        out sigBlobSize,
 			                        out methodProps.CodeRVA,
 			                        out methodProps.ImplFlags);
@@ -205,9 +205,10 @@ namespace DebuggerLibrary
 			methodProps.Name = Marshal.PtrToStringUni(pString);
 			Marshal.FreeHGlobal(pString);
 			
-			methodProps.Signature = new SignatureStream(pSigBlob, sigBlobSize);
+			methodProps.Signature = null;
+			//methodProps.Signature = new SignatureStream(pSigBlob, sigBlobSize);
 			
-			Marshal.FreeCoTaskMem(pSigBlob);
+			//Marshal.FreeCoTaskMem(pSigBlob);
 
 			return methodProps;
 		}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Threads/Thread.cs

@@ -227,6 +227,13 @@ namespace DebuggerLibrary
 			get {
 				process.CheckThatProcessIsSafeForInspection();
 				
+				if (currentFunction == null) {
+					currentFunction = LastFunctionWithLoadedSymbols;
+				}
+				if (currentFunction == null) {
+					currentFunction = LastFunction;
+				}
+
 				return currentFunction;
 			}
 			set {
@@ -250,7 +257,12 @@ namespace DebuggerLibrary
 
 		public Function LastFunction {
 			get {
-				return Callstack[0];
+				List<Function> callstack = Callstack;
+				if (callstack.Count > 0) {
+					return Callstack[0];
+				} else {
+					return null;
+				}
 			}
 		}
 	}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/Variable.cs

@@ -136,7 +136,12 @@ namespace DebuggerLibrary
 				((ICorDebugReferenceValue)corValue).IsNull(out isNull);
 				if (isNull == 0) {
 					ICorDebugValue dereferencedValue;
-					((ICorDebugReferenceValue)corValue).Dereference(out dereferencedValue);
+					try {
+						((ICorDebugReferenceValue)corValue).Dereference(out dereferencedValue);
+					} catch {
+						// Error during dereferencing
+						return null;
+					}
 					return DereferenceUnbox(dereferencedValue); // Try again
 				} else {
 					return null;