buffer: fix copy() segfault with zero arguments #1520
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Buffer#copy() immediately does a ToObject() on the first argument before it checks if it's even an Object. This causes Object::HasIndexedPropertiesInExternalArrayData() to be run on nothing, triggering the segfault. Instead run HasInstance() on the args Value. Which will check if it's actually an Object, before checking if it contains data. Fixes: nodejs#1519
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Buffer#copy() immediately does a ToObject() on the first argument before it checks if it's even an Object. This causes Object::HasIndexedPropertiesInExternalArrayData() to be run on nothing, triggering the segfault. Instead run HasInstance() on the args Value. Which will check if it's actually an Object, before checking if it contains data. Fixes: #1519 PR-URL: #1520 Reviewed-by: Evan Lucas <evanlucas@me.com>
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Buffer#copy() immediately does a ToObject() on the first argument before it checks if it's even an Object. This causes Object::HasIndexedPropertiesInExternalArrayData() to be run on nothing, triggering the segfault. Instead run HasInstance() on the args Value. Which will check if it's actually an Object, before checking if it contains data. Fixes: nodejs#1519 PR-URL: nodejs#1520 Reviewed-by: Evan Lucas <evanlucas@me.com>
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Buffer#copy() immediately does a ToObject() on the first argument before it checks if it's even an Object. This causes Object::HasIndexedPropertiesInExternalArrayData() to be run on nothing, triggering the segfault. Instead run HasInstance() on the args Value. Which will check if it's actually an Object, before checking if it contains data. Fixes: nodejs#1519 PR-URL: nodejs#1520 PORT-PR-URL: nodejs#1559 Reviewed-by: Evan Lucas <evanlucas@me.com>
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Buffer#copy() immediately does a ToObject() on the first argument before
it checks if it's even an Object. This causes
Object::HasIndexedPropertiesInExternalArrayData() to be run on nothing,
triggering the segfault. Instead run HasInstance() on the args Value.
Which will check if it's actually an Object, before checking if it
contains data.
Fixes: #1519