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diff --git a/js/src/tests/test262/language/statements/class/method-static/dflt-params-duplicates.js b/js/src/tests/test262/language/statements/class/method-static/dflt-params-duplicates.js
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+++ b/js/src/tests/test262/language/statements/class/method-static/dflt-params-duplicates.js
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+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/function-forms/dflt-params-duplicates.case
+// - src/function-forms/syntax/cls-decl-meth-static.template
+/*---
+description: It is a Syntax Error if BoundNames of FormalParameters contains any duplicate elements. (static class expression method)
+esid: sec-runtime-semantics-bindingclassdeclarationevaluation
+features: [default-parameters]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ ClassDeclaration : class BindingIdentifier ClassTail
+
+ 1. Let className be StringValue of BindingIdentifier.
+ 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
+ argument className.
+ [...]
+
+ 14.5.14 Runtime Semantics: ClassDefinitionEvaluation
+
+ 21. For each ClassElement m in order from methods
+ a. If IsStatic of m is false, then
+ b. Else,
+ Let status be the result of performing PropertyDefinitionEvaluation for
+ m with arguments F and false.
+ [...]
+
+ 14.3.8 Runtime Semantics: DefineMethod
+
+ MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
+
+ [...]
+ 6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
+ scope, strict). If functionPrototype was passed as a parameter then pass its
+ value as the functionPrototype optional argument of FunctionCreate.
+ [...]
+
+ 9.2.1 [[Call]] ( thisArgument, argumentsList)
+
+ [...]
+ 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
+ [...]
+
+ 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
+
+ 1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
+ [...]
+
+ 9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
+
+ [...]
+ 23. Let iteratorRecord be Record {[[iterator]]:
+ CreateListIterator(argumentsList), [[done]]: false}.
+ 24. If hasDuplicates is true, then
+ [...]
+ 25. Else,
+ b. Let formalStatus be IteratorBindingInitialization for formals with
+ iteratorRecord and env as arguments.
+ [...]
+
+ 14.1.2 Static Semantics: Early Errors
+
+ StrictFormalParameters : FormalParameters
+
+ - It is a Syntax Error if BoundNames of FormalParameters contains any
+ duplicate elements.
+
+ FormalParameters : FormalParameterList
+
+ - It is a Syntax Error if IsSimpleParameterList of FormalParameterList is
+ false and BoundNames of FormalParameterList contains any duplicate
+ elements.
+
+---*/
+$DONOTEVALUATE();
+
+class C {
+ static method(x = 0, x) {
+
+ }
+}