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Bug 807035 - Skip guard insertion if there is no proto. r=dvander

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This commit is contained in:
Nicolas B. Pierron 2012-10-31 18:32:38 -07:00
parent cb08b981d4
commit ba9899d3fc
2 changed files with 8 additions and 1 deletions
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3
js/src/ion/IonCaches.cpp
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@ -114,7 +114,8 @@ GeneratePrototypeGuards(JSContext *cx, MacroAssembler &masm, JSObject *obj, JSOb
JSObject *pobj = IsCacheableListBase(obj)
? obj->getTaggedProto().toObjectOrNull()
: obj->getProto();
JS_ASSERT(pobj);
if (!pobj)
return;
while (pobj != holder) {
if (pobj->hasUncacheableProto()) {
JS_ASSERT(!pobj->hasSingletonType());

6
js/src/jit-test/tests/ion/bug807035.js Normal file
View File

@ -0,0 +1,6 @@
x = [0, 0, 0, 0, 0, 0, 0, 0]
y = ({}).__proto__
x.sort(function() {
y.z
})