diff --git a/Source/JavaScriptCore/heap/ConservativeRoots.cpp b/Source/JavaScriptCore/heap/ConservativeRoots.cpp
index 2b184aef57c7..d7dd2a8b8324 100644
--- a/Source/JavaScriptCore/heap/ConservativeRoots.cpp
+++ b/Source/JavaScriptCore/heap/ConservativeRoots.cpp
@@ -106,7 +106,7 @@ SUPPRESS_ASAN
 void ConservativeRoots::genericAddSpan(void* begin, void* end, MarkHook& markHook)
 {
 #ifdef __CHERI_PURE_CAPABILITY__
-    if ((vaddr_t)begin > (vaddr_t)end) { //XXXKG: end may not be a capability hence use address_get, otherwise we will get a tag violation
+    if ((ptraddr_t)begin > (ptraddr_t)end) { //XXXKG: end may not be a capability hence use address_get, otherwise we will get a tag violation
 #else
     if (begin > end) {
 #endif
@@ -123,7 +123,7 @@ void ConservativeRoots::genericAddSpan(void* begin, void* end, MarkHook& markHoo
     HeapVersion newlyAllocatedVersion = m_heap.objectSpace().newlyAllocatedVersion();
     for (HeapPtr<char>* it = static_cast<HeapPtr<char>*>(begin);
 #ifdef __CHERI_PURE_CAPABILITY__
-        (vaddr_t)it != (vaddr_t)static_cast<HeapPtr<char>*>(end);
+        (ptraddr_t)it != (ptraddr_t)static_cast<HeapPtr<char>*>(end);
 #else
         it != static_cast<HeapPtr<char>*>(end);
 #endif
diff --git a/Source/JavaScriptCore/heap/MachineStackMarker.h b/Source/JavaScriptCore/heap/MachineStackMarker.h
index 216b5263386d..bfde2021dbe0 100644
--- a/Source/JavaScriptCore/heap/MachineStackMarker.h
+++ b/Source/JavaScriptCore/heap/MachineStackMarker.h
@@ -67,7 +67,7 @@ class MachineThreads {
 #define GET_STACK_BOUNDED_POINTER_TO_VARIABLE(var) \
     __builtin_cheri_offset_increment( \
         currentStackPointer(), \
-        (vaddr_t) &(var) - __builtin_cheri_address_get(currentStackPointer()))
+        (ptraddr_t) &(var) - __builtin_cheri_address_get(currentStackPointer()))
 #else
 #define GET_STACK_BOUNDED_POINTER_TO_VARIABLE(var) \
     &(var)
diff --git a/Source/JavaScriptCore/heap/MarkedBlock.h b/Source/JavaScriptCore/heap/MarkedBlock.h
index 2a0bddaa1baf..aee568e8dae0 100644
--- a/Source/JavaScriptCore/heap/MarkedBlock.h
+++ b/Source/JavaScriptCore/heap/MarkedBlock.h
@@ -571,7 +571,7 @@ inline size_t MarkedBlock::Handle::size()
 inline size_t MarkedBlock::atomNumber(const void* p)
 {
 #ifdef __CHERI_PURE_CAPABILITY__
-    return ((vaddr_t)p - (vaddr_t)this) / atomSize;
+    return ((ptraddr_t)p - (ptraddr_t)this) / atomSize;
 #else
     return (reinterpret_cast<uintptr_t>(p) - reinterpret_cast<uintptr_t>(this)) / atomSize;
 #endif
diff --git a/Source/JavaScriptCore/interpreter/CLoopStack.h b/Source/JavaScriptCore/interpreter/CLoopStack.h
index d64d19caf483..3fe7930cc042 100644
--- a/Source/JavaScriptCore/interpreter/CLoopStack.h
+++ b/Source/JavaScriptCore/interpreter/CLoopStack.h
@@ -55,7 +55,7 @@ namespace JSC {
 
         bool containsAddress(Register* address) {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return ((vaddr_t)lowAddress() <= (vaddr_t)address && (vaddr_t)address < (vaddr_t)highAddress());
+            return ((ptraddr_t)lowAddress() <= (ptraddr_t)address && (ptraddr_t)address < (ptraddr_t)highAddress());
 #else
             return (lowAddress() <= address && address < highAddress());
 #endif
diff --git a/Source/JavaScriptCore/runtime/PropertyMapHashTable.h b/Source/JavaScriptCore/runtime/PropertyMapHashTable.h
index eeaa817c16d9..fa129be80725 100644
--- a/Source/JavaScriptCore/runtime/PropertyMapHashTable.h
+++ b/Source/JavaScriptCore/runtime/PropertyMapHashTable.h
@@ -91,7 +91,7 @@ class PropertyTable final : public JSCell {
         bool operator==(const ordered_iterator<T>& other)
         {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return (vaddr_t)m_valuePtr == (vaddr_t)other.m_valuePtr;
+            return (ptraddr_t)m_valuePtr == (ptraddr_t)other.m_valuePtr;
 #else
             return m_valuePtr == other.m_valuePtr;
 #endif
@@ -100,7 +100,7 @@ class PropertyTable final : public JSCell {
         bool operator!=(const ordered_iterator<T>& other)
         {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return (vaddr_t)m_valuePtr != (vaddr_t)other.m_valuePtr;
+            return (ptraddr_t)m_valuePtr != (ptraddr_t)other.m_valuePtr;
 #else
             return m_valuePtr != other.m_valuePtr;
 #endif
diff --git a/Source/JavaScriptCore/runtime/VM.h b/Source/JavaScriptCore/runtime/VM.h
index f9b9ede613d0..ca088064b792 100644
--- a/Source/JavaScriptCore/runtime/VM.h
+++ b/Source/JavaScriptCore/runtime/VM.h
@@ -978,7 +978,7 @@ class VM : public ThreadSafeRefCounted<VM>, public DoublyLinkedListNode<VM> {
         void* curr = currentStackPointer();
 #ifdef __CHERI_PURE_CAPABILITY__
         // XXXKG: limit may or may not be a capability
-        return (vaddr_t)curr >= (vaddr_t)stackLimit;
+        return (ptraddr_t)curr >= (ptraddr_t)stackLimit;
 #else
         return curr >= stackLimit;
 #endif
diff --git a/Source/WTF/wtf/HashFunctions.h b/Source/WTF/wtf/HashFunctions.h
index 8906cc3dd9b4..d116be073722 100644
--- a/Source/WTF/wtf/HashFunctions.h
+++ b/Source/WTF/wtf/HashFunctions.h
@@ -129,14 +129,14 @@ namespace WTF {
 
         static unsigned hash(PtrType key) {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return IntHash<vaddr_t>::hash(reinterpret_cast<vaddr_t>(key));
+            return IntHash<ptraddr_t>::hash(reinterpret_cast<ptraddr_t>(key));
 #else
             return IntHash<uintptr_t>::hash(reinterpret_cast<uintptr_t>(key));
 #endif
         }
         static bool equal(PtrType a, PtrType b) {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return (vaddr_t)a == (vaddr_t)b;
+            return (ptraddr_t)a == (ptraddr_t)b;
 #else
             return a == b;
 #endif
@@ -150,14 +150,14 @@ namespace WTF {
 
         static unsigned hash(PtrType key) {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return IntHash<vaddr_t>::hash(reinterpret_cast<vaddr_t>(key));
+            return IntHash<ptraddr_t>::hash(reinterpret_cast<ptraddr_t>(key));
 #else
             return IntHash<uintptr_t>::hash(reinterpret_cast<uintptr_t>(key));
 #endif
         }
         static bool equal(PtrType a, PtrType b) {
 #ifdef __CHERI_PURE_CAPABILITY__
-            return (vaddr_t)a == (vaddr_t)b;
+            return (ptraddr_t)a == (ptraddr_t)b;
 #else
             return a == b;
 #endif
@@ -181,8 +181,8 @@ namespace WTF {
     template<typename T> struct IntCapHash {
         typedef T IntCapType;
 
-        static unsigned hash(IntCapType key) { return IntHash<vaddr_t>::hash(static_cast<vaddr_t>(key)); }
-        static bool equal(IntCapType a, IntCapType b) { return (vaddr_t)(void*)a == (vaddr_t)(void*)b; }
+        static unsigned hash(IntCapType key) { return IntHash<ptraddr_t>::hash(static_cast<ptraddr_t>(key)); }
+        static bool equal(IntCapType a, IntCapType b) { return (ptraddr_t)(void*)a == (ptraddr_t)(void*)b; }
         static const bool safeToCompareToEmptyOrDeleted = true;
     };
     template<> struct IntHash<__uintcap_t> : public IntCapHash<__uintcap_t> {};
diff --git a/Source/WTF/wtf/RefCountedArray.h b/Source/WTF/wtf/RefCountedArray.h
index f22e7e308e18..ee9bc790f487 100644
--- a/Source/WTF/wtf/RefCountedArray.h
+++ b/Source/WTF/wtf/RefCountedArray.h
@@ -229,7 +229,7 @@ class RefCountedArray {
             char* result = reinterpret_cast<char*>(this) + size();
             //XXXKG: check alignment
 #ifdef __CHERI_PURE_CAPABILITY__
-            ASSERT(!((vaddr_t)result & (sizeof(__uintcap_t)-1)));
+            ASSERT(!((ptraddr_t)result & (sizeof(__uintcap_t)-1)));
 #else
             ASSERT(!(bitwise_cast<uintptr_t>(result) & 7));
 #endif
diff --git a/Source/WTF/wtf/StackBounds.h b/Source/WTF/wtf/StackBounds.h
index 3aa3671261d6..0067bbd5a908 100644
--- a/Source/WTF/wtf/StackBounds.h
+++ b/Source/WTF/wtf/StackBounds.h
@@ -161,9 +161,9 @@ class StackBounds {
         void* currentPosition = currentStackPointer();
         ASSERT(m_origin != m_bound);
         ASSERT(isGrowingDownward()
-#ifdef __CHERI_PURE_CAPABILITY__ // XXXKG: use vaddr_t because m_bound may not have tag set (if obtained from pthreads)
-            ? ((vaddr_t)currentPosition < (vaddr_t)m_origin && (vaddr_t)currentPosition > (vaddr_t)m_bound)
-            : ((vaddr_t)currentPosition > (vaddr_t)m_origin && (vaddr_t)currentPosition < (vaddr_t)m_bound));
+#ifdef __CHERI_PURE_CAPABILITY__ // XXXKG: use ptraddr_t because m_bound may not have tag set (if obtained from pthreads)
+            ? ((ptraddr_t)currentPosition < (ptraddr_t)m_origin && (ptraddr_t)currentPosition > (ptraddr_t)m_bound)
+            : ((ptraddr_t)currentPosition > (ptraddr_t)m_origin && (ptraddr_t)currentPosition < (ptraddr_t)m_bound));
 #else
             ? (currentPosition < m_origin && currentPosition > m_bound)
             : (currentPosition > m_origin && currentPosition < m_bound));
diff --git a/Source/WTF/wtf/StdLibExtras.h b/Source/WTF/wtf/StdLibExtras.h
index dab1f3e7a463..dd2995174b29 100644
--- a/Source/WTF/wtf/StdLibExtras.h
+++ b/Source/WTF/wtf/StdLibExtras.h
@@ -131,7 +131,7 @@ inline bool is8ByteAligned(void* p)
 {
     static_assert(sizeof(double) == 8, "");
 #ifdef __CHERI_PURE_CAPABILITY__
-    return !((vaddr_t)(p) & (sizeof(double) - 1));
+    return !((ptraddr_t)(p) & (sizeof(double) - 1));
 #else
     return !((uintptr_t)(p) & (sizeof(double) - 1));
 #endif
diff --git a/Source/WTF/wtf/text/ASCIIFastPath.h b/Source/WTF/wtf/text/ASCIIFastPath.h
index 157f4844f44a..d53bd52815e0 100644
--- a/Source/WTF/wtf/text/ASCIIFastPath.h
+++ b/Source/WTF/wtf/text/ASCIIFastPath.h
@@ -38,7 +38,7 @@ template <uint64_t mask>
 inline bool isAlignedTo(const void* pointer)
 {
 #ifdef __CHERI_PURE_CAPABILITY__
-    return !(reinterpret_cast<vaddr_t>(pointer) & mask);
+    return !(reinterpret_cast<ptraddr_t>(pointer) & mask);
 #else
     return !(reinterpret_cast<uintptr_t>(pointer) & mask);
 #endif