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36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
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Copied from https://hg.mozilla.org/releases/mozilla-esr38/raw-rev/3fdd280fa099
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# HG changeset patch
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# User Carsten "Tomcat" Book <cbook@mozilla.com>
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# Date 1461123938 -7200
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# Node ID 3fdd280fa099b6453ce9fd9905af883bc2ebce24
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# Parent 52dfdd37150d62f708dc5bf61dd28f3967596788
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Bug 1252707 - a=sylvestre
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diff --git a/js/src/vm/Shape.cpp b/js/src/vm/Shape.cpp
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--- a/js/src/vm/Shape.cpp
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+++ b/js/src/vm/Shape.cpp
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@@ -382,18 +382,20 @@ NativeObject::getChildPropertyOnDictiona
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if (obj->inDictionaryMode()) {
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MOZ_ASSERT(parent == obj->lastProperty());
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RootedGeneric<StackShape*> childRoot(cx, &child);
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shape = childRoot->isAccessorShape() ? NewGCAccessorShape(cx) : NewGCShape(cx);
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if (!shape)
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return nullptr;
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if (childRoot->hasSlot() && childRoot->slot() >= obj->lastProperty()->base()->slotSpan()) {
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- if (!obj->setSlotSpan(cx, childRoot->slot() + 1))
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+ if (!obj->setSlotSpan(cx, childRoot->slot() + 1)) {
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+ new (shape) Shape(obj->lastProperty()->base()->unowned(), 0);
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return nullptr;
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+ }
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}
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shape->initDictionaryShape(*childRoot, obj->numFixedSlots(), &obj->shape_);
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}
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return shape;
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}
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/* static */ Shape*
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