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// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
// - src/dstr-binding/error/gen-func-decl-dflt.template
/*---
description: Error forwarding when IteratorStep returns an abrupt completion (generator function declaration (default parameter))
esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
features: [generators, destructuring-binding, default-parameters]
flags: [generated]
info: |
GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }
[...]
2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
GeneratorBody, scope, strict).
[...]
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.
[...]
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
BindingRestElement : ... BindingIdentifier
1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
environment).
2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
a. If iteratorRecord.[[done]] is false,
i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
true.
iii. ReturnIfAbrupt(next).
---*/
var first = 0;
var second = 0;
var iter = function*() {
first += 1;
throw new Test262Error();
second += 1;
}();
function* f([...x] = iter) {}
assert.throws(Test262Error, function() {
f();
});
iter.next();
assert.sameValue(first, 1);
assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
reportCompare(0, 0);
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