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+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
+description: >
+ Initializer is not evaluated when argument is an object with
+ [[IsHTMLDDA]] internal slot.
+info: |
+ FunctionDeclaration :
+ function BindingIdentifier ( FormalParameters ) { FunctionBody }
+
+ [...]
+ 3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
+ scope, strict).
+ [...]
+
+ [[Call]] ( thisArgument, argumentsList)
+
+ [...]
+ 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
+ [...]
+
+ OrdinaryCallEvaluateBody ( F, argumentsList )
+
+ 1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
+ [...]
+
+ 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.
+ [...]
+
+ Runtime Semantics: IteratorBindingInitialization
+
+ FormalsList : FormalsList , FormalParameter
+
+ [...]
+ 23. Let iteratorRecord be Record {[[Iterator]]:
+ CreateListIterator(argumentsList), [[Done]]: false}.
+ 24. If hasDuplicates is true, then
+ [...]
+ 25. Else,
+ a. Perform ? IteratorBindingInitialization for formals with
+ iteratorRecord and env as arguments.
+ [...]
+features: [default-parameters, IsHTMLDDA]
+---*/
+
+let initCount = 0;
+const counter = function() {
+ initCount += 1;
+};
+
+const arrow = (x = counter()) => x;
+const IsHTMLDDA = $262.IsHTMLDDA;
+
+assert.sameValue(arrow(IsHTMLDDA), IsHTMLDDA);
+assert.sameValue(initCount, 0);
+
+function fn(x, y = counter()) {
+ return y;
+}
+
+assert.sameValue(fn(1, IsHTMLDDA), IsHTMLDDA);
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);