1 files changed, 11 insertions, 9 deletions
diff --git a/Source/JavaScriptCore/interpreter/ProtoCallFrame.cpp b/Source/JavaScriptCore/interpreter/ProtoCallFrame.cpp
index a36001437..eb80b2c23 100644
--- a/Source/JavaScriptCore/interpreter/ProtoCallFrame.cpp
+++ b/Source/JavaScriptCore/interpreter/ProtoCallFrame.cpp
@@ -27,23 +27,25 @@
 #include "ProtoCallFrame.h"
 
 #include "CodeBlock.h"
+#include "JSCInlines.h"
+#include "StackAlignment.h"
 
 namespace JSC {
 
-void ProtoCallFrame::init(CodeBlock* codeBlock, JSScope* scope, JSObject* callee, JSValue thisValue, int argCountIncludingThis, JSValue* otherArgs)
+void ProtoCallFrame::init(CodeBlock* codeBlock, JSObject* callee, JSValue thisValue, int argCountIncludingThis, JSValue* otherArgs)
 {
     this->args = otherArgs;
     this->setCodeBlock(codeBlock);
-    this->setScope(scope);
     this->setCallee(callee);
     this->setArgumentCountIncludingThis(argCountIncludingThis);
-    size_t paddedArgsCount = argCountIncludingThis;
-    if (codeBlock) {
-        size_t numParameters = codeBlock->numParameters();
-        if (paddedArgsCount < numParameters)
-            paddedArgsCount = numParameters;
-    }
-    this->setPaddedArgsCount(paddedArgsCount);
+    if (codeBlock && argCountIncludingThis < codeBlock->numParameters())
+        this->arityMissMatch = true;
+    else
+        this->arityMissMatch = false;
+
+    // Round up argCountIncludingThis to keep the stack frame size aligned.
+    size_t paddedArgsCount = roundArgumentCountToAlignFrame(argCountIncludingThis);
+    this->setPaddedArgCount(paddedArgsCount);
     this->clearCurrentVPC();
     this->setThisValue(thisValue);
 }