Index: src/OFIntrospection.m
==================================================================
--- src/OFIntrospection.m
+++ src/OFIntrospection.m
@@ -386,30 +386,10 @@
 - (instancetype)init
 {
 	OF_INVALID_INIT_METHOD
 }
 
-#if defined(OF_OBJFW_RUNTIME)
-- (instancetype)of_initWithIVar: (struct objc_ivar *)iVar
-{
-	self = [super init];
-
-	@try {
-		if (iVar->name != NULL)
-			_name = [[OFString alloc]
-			    initWithUTF8String: iVar->name];
-
-		_typeEncoding = iVar->typeEncoding;
-		_offset = iVar->offset;
-	} @catch (id e) {
-		[self release];
-		@throw e;
-	}
-
-	return self;
-}
-#elif defined(OF_APPLE_RUNTIME)
 - (instancetype)of_initWithIVar: (Ivar)iVar
 {
 	self = [super init];
 
 	@try {
@@ -425,13 +405,10 @@
 		@throw e;
 	}
 
 	return self;
 }
-#else
-# error Invalid ObjC runtime!
-#endif
 
 - (void)dealloc
 {
 	[_name release];
 
@@ -469,13 +446,13 @@
 		struct objc_method_list *methodList;
 		struct objc_property_list *propertyList;
 #elif defined(OF_APPLE_RUNTIME)
 		Method *methodList;
 		objc_property_t *propertyList;
+#endif
 		Ivar *iVarList;
 		unsigned count;
-#endif
 		void *pool;
 
 		_classMethods = [[OFMutableArray alloc] init];
 		_instanceMethods = [[OFMutableArray alloc] init];
 		_properties = [[OFMutableArray alloc] init];
@@ -513,22 +490,10 @@
 			for (unsigned int i = 0; i < propertyList->count; i++)
 				[_properties addObject: [[[OFProperty alloc]
 				    of_initWithProperty:
 				    &propertyList->properties[i]] autorelease]];
 
-			objc_autoreleasePoolPop(pool);
-		}
-
-		if (class->iVars != NULL) {
-			pool = objc_autoreleasePoolPush();
-
-			for (unsigned int i = 0; i < class->iVars->count; i++)
-				[_instanceVariables addObject:
-				    [[[OFInstanceVariable alloc]
-				    of_initWithIVar:
-				    &class->iVars->iVars[i]] autorelease]];
-
 			objc_autoreleasePoolPop(pool);
 		}
 #elif defined(OF_APPLE_RUNTIME)
 		methodList = class_copyMethodList(object_getClass(class),
 		    &count);
@@ -570,10 +535,13 @@
 
 			objc_autoreleasePoolPop(pool);
 		} @finally {
 			free(propertyList);
 		}
+#else
+# error Invalid ObjC runtime!
+#endif
 
 		iVarList = class_copyIvarList(class, &count);
 		@try {
 			pool = objc_autoreleasePoolPush();
 
@@ -584,13 +552,10 @@
 
 			objc_autoreleasePoolPop(pool);
 		} @finally {
 			free(iVarList);
 		}
-#else
-# error Invalid ObjC runtime!
-#endif
 
 		[_classMethods makeImmutable];
 		[_instanceMethods makeImmutable];
 		[_properties makeImmutable];
 		[_instanceVariables makeImmutable];

Index: src/runtime/Makefile
==================================================================
--- src/runtime/Makefile
+++ src/runtime/Makefile
@@ -16,10 +16,11 @@
        class.m			\
        dtable.m			\
        exception.m		\
        hashtable.m		\
        init.m			\
+       ivar.m			\
        lookup.m			\
        misc.m			\
        property.m		\
        protocol.m		\
        selector.m		\

Index: src/runtime/ObjFWRT.h
==================================================================
--- src/runtime/ObjFWRT.h
+++ src/runtime/ObjFWRT.h
@@ -59,10 +59,11 @@
 #define NO  false
 
 typedef struct objc_class *Class;
 typedef struct objc_object *id;
 typedef const struct objc_selector *SEL;
+typedef struct objc_ivar *Ivar;
 #if !defined(__wii__) && !defined(__amigaos__)
 typedef bool BOOL;
 #endif
 typedef id _Nullable (*IMP)(id _Nonnull, SEL _Nonnull, ...);
 typedef void (*objc_uncaught_exception_handler_t)(id _Nullable);
@@ -73,19 +74,19 @@
 	Class _Nullable superclass;
 	const char *_Nonnull name;
 	unsigned long version;
 	unsigned long info;
 	long instanceSize;
-	struct objc_ivar_list *_Nullable iVars;
+	struct objc_ivar_list *_Nullable ivars;
 	struct objc_method_list *_Nullable methodList;
 	struct objc_dtable *_Nonnull DTable;
 	Class _Nullable *_Nullable subclassList;
 	void *_Nullable siblingClass;
 	struct objc_protocol_list *_Nullable protocols;
 	void *_Nullable GCObjectType;
 	unsigned long ABIVersion;
-	int32_t *_Nonnull *_Nullable iVarOffsets;
+	int32_t *_Nonnull *_Nullable ivarOffsets;
 	struct objc_property_list *_Nullable properties;
 };
 
 enum objc_class_info {
 	OBJC_CLASS_INFO_CLASS	    = 0x001,
@@ -132,21 +133,10 @@
 	struct objc_method_list *_Nullable instanceMethods;
 	struct objc_method_list *_Nullable classMethods;
 	struct objc_protocol_list *_Nullable protocols;
 };
 
-struct objc_ivar {
-	const char *_Nonnull name;
-	const char *_Nonnull typeEncoding;
-	unsigned int offset;
-};
-
-struct objc_ivar_list {
-	unsigned int count;
-	struct objc_ivar iVars[1];
-};
-
 enum objc_property_attributes {
 	OBJC_PROPERTY_READONLY	= 0x01,
 	OBJC_PROPERTY_GETTER	= 0x02,
 	OBJC_PROPERTY_ASSIGN	= 0x04,
 	OBJC_PROPERTY_READWRITE	= 0x08,
@@ -258,10 +248,15 @@
 extern const char *_Nonnull protocol_getName(Protocol *_Nonnull protocol);
 extern bool protocol_isEqual(Protocol *_Nonnull protocol1,
     Protocol *_Nonnull protocol2);
 extern bool protocol_conformsToProtocol(Protocol *_Nonnull protocol1,
     Protocol *_Nonnull protocol2);
+extern Ivar _Nullable *_Nullable class_copyIvarList(Class _Nullable class_,
+    unsigned int *_Nullable outCount);
+extern const char *_Nonnull ivar_getName(Ivar _Nonnull ivar);
+extern const char *_Nonnull ivar_getTypeEncoding(Ivar _Nonnull ivar);
+extern ptrdiff_t ivar_getOffset(Ivar _Nonnull ivar);
 extern void objc_exit(void);
 extern _Nullable objc_uncaught_exception_handler_t
     objc_setUncaughtExceptionHandler(
     objc_uncaught_exception_handler_t _Nullable handler);
 extern void objc_setForwardHandler(IMP _Nullable forward,

Index: src/runtime/amiga-glue.m
==================================================================
--- src/runtime/amiga-glue.m
+++ src/runtime/amiga-glue.m
@@ -631,5 +631,38 @@
 void __saveds
 glue_objc_exit(void)
 {
 	objc_exit();
 }
+
+Ivar *__saveds
+glue_class_copyIvarList PPC_PARAMS(Class class, unsigned int *outCount)
+{
+	M68K_ARG(Class, class, a0)
+	M68K_ARG(unsigned int *, outCount, a1)
+
+	return class_copyIvarList(class, outCount);
+}
+
+const char *__saveds
+glue_ivar_getName PPC_PARAMS(Ivar ivar)
+{
+	M68K_ARG(Ivar, ivar, a0)
+
+	return ivar_getName(ivar);
+}
+
+const char *__saveds
+glue_ivar_getTypeEncoding PPC_PARAMS(Ivar ivar)
+{
+	M68K_ARG(Ivar, ivar, a0)
+
+	return ivar_getTypeEncoding(ivar);
+}
+
+ptrdiff_t __saveds
+glue_ivar_getOffset PPC_PARAMS(Ivar ivar)
+{
+	M68K_ARG(Ivar, ivar, a0)
+
+	return ivar_getOffset(ivar);
+}

Index: src/runtime/amiga-library.m
==================================================================
--- src/runtime/amiga-library.m
+++ src/runtime/amiga-library.m
@@ -126,10 +126,14 @@
     glue_objc_setUncaughtExceptionHandler(void);
 extern void glue_objc_setForwardHandler(void);
 extern void glue_objc_setEnumerationMutationHandler(void);
 extern void glue_objc_zero_weak_references(void);
 extern void glue_objc_exit(void);
+extern Ivar *glue_class_copyIvarList(void);
+extern const char *glue_ivar_getName(void);
+extern const char *glue_ivar_getTypeEncoding(void);
+extern ptrdiff_t glue_ivar_getOffset(void);
 
 #ifdef OF_MORPHOS
 const ULONG __abox__ = 1;
 #endif
 struct ExecBase *SysBase;
@@ -633,10 +637,14 @@
 	(CONST_APTR)glue_objc_setUncaughtExceptionHandler,
 	(CONST_APTR)glue_objc_setForwardHandler,
 	(CONST_APTR)glue_objc_setEnumerationMutationHandler,
 	(CONST_APTR)glue_objc_zero_weak_references,
 	(CONST_APTR)glue_objc_exit,
+	(CONST_APTR)glue_class_copyIvarList,
+	(CONST_APTR)glue_ivar_getName,
+	(CONST_APTR)glue_ivar_getTypeEncoding,
+	(CONST_APTR)glue_ivar_getOffset,
 	(CONST_APTR)-1,
 #ifdef OF_MORPHOS
 	(CONST_APTR)FUNCARRAY_END
 #endif
 };

Index: src/runtime/amigaos3.sfd
==================================================================
--- src/runtime/amigaos3.sfd
+++ src/runtime/amigaos3.sfd
@@ -69,6 +69,10 @@
 _Nullable objc_uncaught_exception_handler_t glue_objc_setUncaughtExceptionHandler(objc_uncaught_exception_handler_t _Nullable handler)(a0)
 void glue_objc_setForwardHandler(IMP _Nullable forward, IMP _Nullable stretForward)(a0,a1)
 void glue_objc_setEnumerationMutationHandler(objc_enumeration_mutation_handler_t _Nullable handler)(a0)
 void glue_objc_zero_weak_references(id _Nonnull value)(a0)
 void glue_objc_exit(void)()
+Ivar _Nullable *_Nullable glue_class_copyIvarList(Class _Nullable class_, unsigned int *_Nullable outCount)(a0,a1)
+const char *_Nonnull glue_ivar_getName(Ivar _Nonnull ivar)(a0)
+const char *_Nonnull glue_ivar_getTypeEncoding(Ivar _Nonnull ivar)(a0)
+ptrdiff_t glue_ivar_getOffset(Ivar _Nonnull ivar)(a0)
 ==end

Index: src/runtime/class.m
==================================================================
--- src/runtime/class.m
+++ src/runtime/class.m
@@ -255,13 +255,12 @@
 
 	class->superclass->subclassList[i] = class;
 	class->superclass->subclassList[i + 1] = Nil;
 }
 
-
 static void
-updateIVarOffsets(Class class)
+updateIvarOffsets(Class class)
 {
 	if (!(class->info & OBJC_CLASS_INFO_NEW_ABI))
 		return;
 
 	if (class->instanceSize > 0)
@@ -270,21 +269,21 @@
 	class->instanceSize = -class->instanceSize;
 
 	if (class->superclass != Nil) {
 		class->instanceSize += class->superclass->instanceSize;
 
-		if (class->iVars != NULL) {
-			for (unsigned int i = 0; i < class->iVars->count; i++) {
-				class->iVars->iVars[i].offset +=
+		if (class->ivars != NULL) {
+			for (unsigned int i = 0; i < class->ivars->count; i++) {
+				class->ivars->ivars[i].offset +=
 				    class->superclass->instanceSize;
-				*class->iVarOffsets[i] =
-				    class->iVars->iVars[i].offset;
+				*class->ivarOffsets[i] =
+				    class->ivars->ivars[i].offset;
 			}
 		}
 	} else
-		for (unsigned int i = 0; i < class->iVars->count; i++)
-			*class->iVarOffsets[i] = class->iVars->iVars[i].offset;
+		for (unsigned int i = 0; i < class->ivars->count; i++)
+			*class->ivarOffsets[i] = class->ivars->ivars[i].offset;
 }
 
 static void
 setupClass(Class class)
 {
@@ -311,11 +310,11 @@
 		addSubclass(class);
 		addSubclass(class->isa);
 	} else
 		class->isa->superclass = class;
 
-	updateIVarOffsets(class);
+	updateIvarOffsets(class);
 
 	class->info |= OBJC_CLASS_INFO_SETUP;
 	class->isa->info |= OBJC_CLASS_INFO_SETUP;
 }
 

ADDED   src/runtime/ivar.m
Index: src/runtime/ivar.m
==================================================================
--- src/runtime/ivar.m
+++ src/runtime/ivar.m
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
+ *               2018, 2019
+ *   Jonathan Schleifer <js@heap.zone>
+ *
+ * All rights reserved.
+ *
+ * This file is part of ObjFW. It may be distributed under the terms of the
+ * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
+ * the packaging of this file.
+ *
+ * Alternatively, it may be distributed under the terms of the GNU General
+ * Public License, either version 2 or 3, which can be found in the file
+ * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
+ * file.
+ */
+
+#include "config.h"
+
+#import "ObjFWRT.h"
+#import "private.h"
+
+Ivar *
+class_copyIvarList(Class class, unsigned int *outCount)
+{
+	unsigned int count;
+	Ivar *ivars;
+
+	if (class == Nil)
+		return NULL;
+
+	objc_global_mutex_lock();
+
+	if (class->ivars == NULL) {
+		objc_global_mutex_unlock();
+		return NULL;
+	}
+
+	count = class->ivars->count;
+
+	if (count == 0) {
+		objc_global_mutex_unlock();
+		return NULL;
+	}
+
+	if ((ivars = malloc((count + 1) * sizeof(Ivar))) == NULL) {
+		objc_global_mutex_unlock();
+		return NULL;
+	}
+
+	for (unsigned int i = 0; i < count; i++)
+		ivars[i] = &class->ivars->ivars[i];
+	ivars[count] = NULL;
+
+	if (outCount != NULL)
+		*outCount = count;
+
+	objc_global_mutex_unlock();
+
+	return ivars;
+}
+
+const char *
+ivar_getName(Ivar ivar)
+{
+	return ivar->name;
+}
+
+const char *
+ivar_getTypeEncoding(Ivar ivar)
+{
+	return ivar->typeEncoding;
+}
+
+ptrdiff_t
+ivar_getOffset(Ivar ivar)
+{
+	return ivar->offset;
+}

Index: src/runtime/linklib/linklib.m
==================================================================
--- src/runtime/linklib/linklib.m
+++ src/runtime/linklib/linklib.m
@@ -589,5 +589,29 @@
 void
 objc_exit(void)
 {
 	glue_objc_exit();
 }
+
+Ivar *
+class_copyIvarList(Class class, unsigned int *outCount)
+{
+	return glue_class_copyIvarList(class, outCount);
+}
+
+const char *
+ivar_getName(Ivar ivar)
+{
+	return glue_ivar_getName(ivar);
+}
+
+const char *
+ivar_getTypeEncoding(Ivar ivar)
+{
+	return glue_ivar_getTypeEncoding(ivar);
+}
+
+ptrdiff_t
+ivar_getOffset(Ivar ivar)
+{
+	return glue_ivar_getOffset(ivar);
+}

Index: src/runtime/morphos-clib.h
==================================================================
--- src/runtime/morphos-clib.h
+++ src/runtime/morphos-clib.h
@@ -63,5 +63,9 @@
 objc_uncaught_exception_handler_t glue_objc_setUncaughtExceptionHandler(objc_uncaught_exception_handler_t);
 void glue_objc_setForwardHandler(IMP, IMP);
 void glue_objc_setEnumerationMutationHandler(objc_enumeration_mutation_handler_t);
 void glue_objc_zero_weak_references(id);
 void glue_objc_exit(void);
+Ivar *glue_class_copyIvarList(Class class_, unsigned int *outCount);
+const char *glue_ivar_getName(Ivar ivar);
+const char *glue_ivar_getTypeEncoding(Ivar ivar);
+ptrdiff_t glue_ivar_getOffset(Ivar ivar);

Index: src/runtime/morphos.fd
==================================================================
--- src/runtime/morphos.fd
+++ src/runtime/morphos.fd
@@ -65,6 +65,10 @@
 glue_objc_setUncaughtExceptionHandler(handler)(sysv,r12base)
 glue_objc_setForwardHandler(forward,stretForward)(sysv,r12base)
 glue_objc_setEnumerationMutationHandler(handler)(sysv,r12base)
 glue_objc_zero_weak_references(value)(sysv,r12base)
 glue_objc_exit()(sysv,r12base)
+glue_class_copyIvarList(class_,outCount)(sysv,r12base)
+glue_ivar_getName(ivar)(sysv,r12base)
+glue_ivar_getTypeEncoding(ivar)(sysv,r12base)
+glue_ivar_getOffset(ivar)(sysv,r12base)
 ##end

Index: src/runtime/private.h
==================================================================
--- src/runtime/private.h
+++ src/runtime/private.h
@@ -34,19 +34,19 @@
 	const char *_Nullable superclass;
 	const char *_Nonnull name;
 	unsigned long version;
 	unsigned long info;
 	long instanceSize;
-	void *_Nullable iVars;
+	void *_Nullable ivars;
 	struct objc_abi_method_list *_Nullable methodList;
 	void *_Nullable DTable;
 	void *_Nullable subclassList;
 	void *_Nullable siblingClass;
 	void *_Nullable protocols;
 	void *_Nullable GCObjectType;
 	long ABIVersion;
-	int32_t *_Nonnull *_Nullable iVarOffsets;
+	int32_t *_Nonnull *_Nullable ivarOffsets;
 	void *_Nullable properties;
 };
 
 struct objc_abi_selector {
 	const char *_Nonnull name;
@@ -61,10 +61,21 @@
 struct objc_abi_method_list {
 	struct objc_abi_method_list *_Nullable next;
 	unsigned int count;
 	struct objc_abi_method methods[1];
 };
+
+struct objc_ivar {
+	const char *_Nonnull name;
+	const char *_Nonnull typeEncoding;
+	unsigned int offset;
+};
+
+struct objc_ivar_list {
+	unsigned int count;
+	struct objc_ivar ivars[1];
+};
 
 struct objc_abi_category {
 	const char *_Nonnull categoryName;
 	const char *_Nonnull className;
 	struct objc_abi_method_list *_Nullable instanceMethods;