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authortrav90 <travawine@palemoon.org>2018-08-12 07:51:14 -0500
committertrav90 <travawine@palemoon.org>2018-08-12 07:51:14 -0500
commit9d1bfd4dc7338a39642f07eeea316f76bec43b8c (patch)
treefbe536a6544c7dff73f351ce9dc671e3ed2be0fd /js/src
parente1ac3350e21e2cfd9f31b54b86423ef7dcfb3e39 (diff)
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Avoid using memcpy on HeapSlot that is not trivially copyable.
Diffstat (limited to 'js/src')
-rw-r--r--js/src/vm/NativeObject.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/js/src/vm/NativeObject.h b/js/src/vm/NativeObject.h
index d2c06eabc..f4199b4cf 100644
--- a/js/src/vm/NativeObject.h
+++ b/js/src/vm/NativeObject.h
@@ -1085,7 +1085,8 @@ class NativeObject : public ShapedObject
for (uint32_t i = 0; i < count; ++i)
elements_[dstStart + i].set(this, HeapSlot::Element, dstStart + i, src[i]);
} else {
- memcpy(&elements_[dstStart], src, count * sizeof(HeapSlot));
+ memcpy(reinterpret_cast<Value*>(&elements_[dstStart]), src,
+ count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}
}
@@ -1094,7 +1095,7 @@ class NativeObject : public ShapedObject
MOZ_ASSERT(dstStart + count <= getDenseCapacity());
MOZ_ASSERT(!denseElementsAreCopyOnWrite());
MOZ_ASSERT(!denseElementsAreFrozen());
- memcpy(&elements_[dstStart], src, count * sizeof(HeapSlot));
+ memcpy(reinterpret_cast<Value*>(&elements_[dstStart]), src, count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}
@@ -1129,7 +1130,8 @@ class NativeObject : public ShapedObject
dst->set(this, HeapSlot::Element, dst - elements_, *src);
}
} else {
- memmove(elements_ + dstStart, elements_ + srcStart, count * sizeof(HeapSlot));
+ memmove(reinterpret_cast<Value*>(elements_ + dstStart), elements_ + srcStart,
+ count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}
}
@@ -1142,7 +1144,8 @@ class NativeObject : public ShapedObject
MOZ_ASSERT(!denseElementsAreCopyOnWrite());
MOZ_ASSERT(!denseElementsAreFrozen());
- memmove(elements_ + dstStart, elements_ + srcStart, count * sizeof(Value));
+ memmove(reinterpret_cast<Value*>(elements_ + dstStart), elements_ + srcStart,
+ count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}