2 files changed, 8 insertions, 14 deletions
diff --git a/fxjs/xfa/cjx_object.cpp b/fxjs/xfa/cjx_object.cpp
index 23e754d4b7..8684212ce2 100644
--- a/fxjs/xfa/cjx_object.cpp
+++ b/fxjs/xfa/cjx_object.cpp
@@ -178,9 +178,8 @@ CJS_Return CJX_Object::RunMethod(
 }
 
 void CJX_Object::ThrowTooManyOccurancesException(const WideString& obj) const {
-  ThrowException(
-      L"The element [%ls] has violated its allowable number of occurrences.",
-      obj.c_str());
+  ThrowException(L"The element [" + obj +
+                 L"] has violated its allowable number of occurrences.");
 }
 
 void CJX_Object::ThrowInvalidPropertyException() const {
@@ -193,22 +192,17 @@ void CJX_Object::ThrowIndexOutOfBoundsException() const {
 
 void CJX_Object::ThrowParamCountMismatchException(
     const WideString& method) const {
-  ThrowException(L"Incorrect number of parameters calling method '%ls'.",
-                 method.c_str());
+  ThrowException(L"Incorrect number of parameters calling method '" + method +
+                 L"'.");
 }
 
 void CJX_Object::ThrowArgumentMismatchException() const {
   ThrowException(L"Argument mismatch in property or function argument.");
 }
 
-void CJX_Object::ThrowException(const wchar_t* str, ...) const {
-  va_list arg_ptr;
-  va_start(arg_ptr, str);
-  WideString wsMessage = WideString::FormatV(str, arg_ptr);
-  va_end(arg_ptr);
-
-  ASSERT(!wsMessage.IsEmpty());
-  FXJSE_ThrowMessage(wsMessage.UTF8Encode().AsStringView());
+void CJX_Object::ThrowException(const WideString& str) const {
+  ASSERT(!str.IsEmpty());
+  FXJSE_ThrowMessage(str.UTF8Encode().AsStringView());
 }
 
 bool CJX_Object::HasAttribute(XFA_Attribute eAttr) {
diff --git a/fxjs/xfa/cjx_object.h b/fxjs/xfa/cjx_object.h
index c9042b5049..4116f378ca 100644
--- a/fxjs/xfa/cjx_object.h
+++ b/fxjs/xfa/cjx_object.h
@@ -222,7 +222,7 @@ class CJX_Object {
   void DefineMethods(pdfium::span<const CJX_MethodSpec> methods);
   void MoveBufferMapData(CXFA_Object* pSrcModule, CXFA_Object* pDstModule);
   void SetMapModuleString(void* pKey, const WideStringView& wsValue);
-  void ThrowException(const wchar_t* str, ...) const;
+  void ThrowException(const WideString& str) const;
 
  private:
   void Script_Boolean_DefaultValue(CFXJSE_Value* pValue,