Update BView to call debugger when passed a NULL archive for its archive constructor. This means there is no need to check for a NULL archive in BSeparatorView. Also update BUnarchiver and friends to be NULL safe. Pointed out by Adrien, fixes CID 1754.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38063 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/SeparatorView.cpp

@@ -84,9 +84,7 @@ BSeparatorView::BSeparatorView(BMessage* archive)
 		B_ALIGN_VERTICAL_CENTER)),
 	fBorder(B_FANCY_BORDER)
 {
-	// TODO: Test this.
-	if (archive == NULL)
-		return;
+	// NULL archives will be caught by BView.
 
 	const char* label;
 	if (archive->FindString("_labelview", &label) == B_OK) {

src/kits/interface/View.cpp

@@ -405,6 +405,8 @@ BView::BView(BMessage* archive)
 	BHandler(BUnarchiver::PrepareArchive(archive))
 {
 	BUnarchiver unarchiver(archive);
+	if (!archive)
+		debugger("BView cannot be constructed from a NULL archive.");
 
 	BRect frame;
 	archive->FindRect("_frame", &frame);

src/kits/support/Archivable.cpp

@@ -511,6 +511,9 @@ BUnarchiver::IsArchiveManaged(const BMessage* archive)
 	if (BManagerBase::ManagerPointer(archive))
 		return true;
 
+	if (!archive)
+		return false;
+
 	// managed top level archives return here
 	bool dummy;
 	if (archive->FindBool(kManagedField, &dummy) == B_OK)

src/kits/support/ArchivingManagers.h

@@ -43,6 +43,9 @@ public:
 	static BManagerBase*
 	ManagerPointer(const BMessage* constArchive)
 	{
+		if (!constArchive)
+			return NULL;
+
 		BMessage* archive = const_cast<BMessage*>(constArchive);
 
 		return static_cast<BManagerBase*>(