diff --git a/Source/JavaScriptCore/runtime/StackFrame.cpp b/Source/JavaScriptCore/runtime/StackFrame.cpp
index 8ec875d..edb326a 100644
--- a/Source/JavaScriptCore/runtime/StackFrame.cpp
+++ b/Source/JavaScriptCore/runtime/StackFrame.cpp
@@ -35,7 +35,6 @@
 
 StackFrame::StackFrame(VM& vm, JSCell* owner, JSCell* callee)
     : m_callee(vm, owner, callee)
-    , m_bytecodeOffset(UINT_MAX)
 {
 }
 
@@ -46,6 +45,12 @@
 {
 }
 
+StackFrame::StackFrame(Wasm::IndexOrName indexOrName)
+    : m_wasmFunctionIndexOrName(indexOrName)
+    , m_isWasmFrame(true)
+{
+}
+
 intptr_t StackFrame::sourceID() const
 {
     if (!m_codeBlock)