Index: src/OFConstString.m
==================================================================
--- src/OFConstString.m
+++ src/OFConstString.m
@@ -24,10 +24,54 @@
 {
 	objc_setFutureClass((Class)&_OFConstStringClassReference,
 	    "OFConstString");
 }
 #endif
+
++ alloc
+{
+	@throw [OFNotImplementedException newWithClass: self
+					      selector: _cmd];
+}
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- initWithCString: (const char*)str
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- initWithCString: (const char*)str
+           length: (size_t)len
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- initWithFormat: (OFString*)fmt, ...
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- initWithFormat: (OFString*)fmt
+       arguments: (va_list)args
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- initWithString: (OFString*)str
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - addMemoryToPool: (void*)ptr
 {
 	@throw [OFNotImplementedException newWithClass: isa
 					      selector: _cmd];

Index: src/OFDataArray.m
==================================================================
--- src/OFDataArray.m
+++ src/OFDataArray.m
@@ -29,10 +29,16 @@
 @implementation OFDataArray
 + dataArrayWithItemSize: (size_t)is
 {
 	return [[[self alloc] initWithItemSize: is] autorelease];
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithItemSize: (size_t)is
 {
 	Class c;
 

Index: src/OFExceptions.m
==================================================================
--- src/OFExceptions.m
+++ src/OFExceptions.m
@@ -70,10 +70,16 @@
 @implementation OFException
 + newWithClass: (Class)class_
 {
 	return [[self alloc] initWithClass: class_];
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 {
 	self = [super init];
 
@@ -105,10 +111,16 @@
 	  size: (size_t)size
 {
 	return [[self alloc] initWithClass: class_
 				      size: size];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   size: (size_t)size
 {
 	self = [super initWithClass: class_];
@@ -141,10 +153,16 @@
        pointer: (void*)ptr
 {
 	return [[self alloc] initWithClass: class_
 				   pointer: ptr];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	pointer: (void*)ptr
 {
 	self = [super initWithClass: class_];
@@ -179,10 +197,16 @@
       selector: (SEL)selector_
 {
 	return [[self alloc] initWithClass: class_
 				  selector: selector_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
        selector: (SEL)selector_
 {
 	self = [super initWithClass: class_];
@@ -223,10 +247,16 @@
       selector: (SEL)selector_
 {
 	return [[self alloc] initWithClass: class_
 				  selector: selector_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
        selector: (SEL)selector_
 {
 	self = [super initWithClass: class_];
@@ -295,10 +325,16 @@
 {
 	return [[self alloc] initWithClass: class_
 				      path: path_
 				      mode: mode_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   path: (OFString*)path_
 	   mode: (OFString*)mode_
 {
@@ -361,10 +397,16 @@
 	  size: (size_t)size
 {
 	return [[self alloc] initWithClass: class_
 				      size: size];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   size: (size_t)size
 	  items: (size_t)items
 {
@@ -505,10 +547,16 @@
 {
 	return [[self alloc] initWithClass: class_
 				      node: node_
 				   service: service_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   node: (OFString*)node_
 	service: (OFString*)service_
 {
@@ -568,10 +616,16 @@
 {
 	return [[self alloc] initWithClass: class_
 				      node: node_
 				   service: service_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   node: (OFString*)node_
 	service: (OFString*)service_
 {
@@ -630,10 +684,16 @@
 	return [[self alloc] initWithClass: class_
 				      node: node_
 				   service: service_
 				    family: family_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	   node: (OFString*)node_
 	service: (OFString*)service_
 	 family: (int)family_
@@ -695,10 +755,16 @@
        backLog: (int)backlog_
 {
 	return [[self alloc] initWithClass: class_
 				   backLog: backlog_];
 }
+
+- initWithClass: (Class)class_
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithClass: (Class)class_
 	backLog: (int)backlog_
 {
 	self = [super initWithClass: class_];

Index: src/OFFile.m
==================================================================
--- src/OFFile.m
+++ src/OFFile.m
@@ -105,10 +105,16 @@
 	/* FIXME: On error, throw exception */
 #ifndef _WIN32
 	symlink([src cString], [dest cString]);
 #endif
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithPath: (OFString*)path
 	  mode: (OFString*)mode
 {
 	Class c;

Index: src/OFIterator.m
==================================================================
--- src/OFIterator.m
+++ src/OFIterator.m
@@ -17,10 +17,16 @@
 
 /* Reference for static linking */
 int _OFIterator_reference;
 
 @implementation OFIterator
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
 - initWithData: (OFList**)data_
 	  size: (size_t)size_
 {
 	self = [super init];
 

Index: src/OFNumber.m
==================================================================
--- src/OFNumber.m
+++ src/OFNumber.m
@@ -340,10 +340,16 @@
 
 + numberWithDouble: (double)double_
 {
 	return [[[self alloc] initWithDouble: double_] autorelease];
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithChar: (char)char_
 {
 	self = [super init];
 

Index: src/OFPlugin.m
==================================================================
--- src/OFPlugin.m
+++ src/OFPlugin.m
@@ -52,13 +52,22 @@
 	}
 
 	plugin->handle = handle;
 	return [plugin autorelease];
 }
+
+- init
+{
+	if (isa == [OFPlugin class])
+		@throw [OFNotImplementedException newWithClass: isa
+						      selector: _cmd];
+
+	return [super init];
+}
 
 - (void)dealloc
 {
 	dlclose(handle);
 
 	[super dealloc];
 }
 @end

Index: src/OFStream.m
==================================================================
--- src/OFStream.m
+++ src/OFStream.m
@@ -26,10 +26,14 @@
 
 @implementation OFStream
 - init
 {
 	self = [super init];
+
+	if (isa == [OFStream class])
+		@throw [OFNotImplementedException newWithClass: isa
+						      selector: _cmd];
 
 	cache = NULL;
 
 #ifndef _WIN32
 	if (pagesize == 0)

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -75,10 +75,16 @@
 	if (ret == NULL)
 		return nil;
 
 	return (id)ret;
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithObject: (id)obj
 {
 	Class c;
 

Index: src/OFXMLElement.m
==================================================================
--- src/OFXMLElement.m
+++ src/OFXMLElement.m
@@ -31,10 +31,16 @@
       stringValue: (OFString*)stringval_
 {
 	return [[[self alloc] initWithName: name_
 			       stringValue: stringval_] autorelease];
 }
+
+- init
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 
 - initWithName: (OFString*)name_
 {
 	self = [super init];