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Bug 1341339 - Check for duplicates in processIterators

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Issue #74
This commit is contained in:
janekptacijarabaci 2018-03-25 14:47:39 +02:00 • committed by Roy Tam
commit b8eb17e022
2 changed files with 15 additions and 3 deletions
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9
js/src/jit-test/tests/for-of/bug-1341339.js Normal file
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@ -0,0 +1,9 @@
let m = parseModule(`
function* values() {}
var iterator = values();
for (var i=0; i < 10000; ++i) {
for (var x of iterator) {}
}
`);
m.declarationInstantiation();
m.evaluation();

9
js/src/jit/IonBuilder.cpp
View file

@ -963,9 +963,12 @@ IonBuilder::processIterators()
Vector<MDefinition*, 8, SystemAllocPolicy> worklist;
for (size_t i = 0; i < iterators_.length(); i++) {
if (!worklist.append(iterators_[i]))
return false;
iterators_[i]->setInWorklist();
MDefinition* iter = iterators_[i];
if (!iter->isInWorklist()) {
if (!worklist.append(iter))
return false;
iter->setInWorklist();
}
}
while (!worklist.empty()) {