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Be more conservative about safety of dictionary and union values.

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Mark dictionaries containing GC values as must_root, and wrap them in
RootedTraceableBox in automatically-generated APIs. To accommodate
union variants that are now flagged as unsafe, add RootedTraceableBox
to union variants that need to be rooted, rather than wrapping the
entire union value.
This commit is contained in:
Josh Matthews 2017-05-26 12:29:31 -04:00
parent e481e8934a
commit da65698c5c
5 changed files with 47 additions and 17 deletions
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4
components/script/dom/filereader.rs
View file

@ -13,6 +13,7 @@ use dom::bindings::js::{MutNullableJS, Root};
use dom::bindings::refcounted::Trusted;
use dom::bindings::reflector::{DomObject, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::bindings::trace::RootedTraceableBox;
use dom::blob::Blob;
use dom::domexception::{DOMErrorName, DOMException};
use dom::event::{Event, EventBubbles, EventCancelable};
@ -338,7 +339,8 @@ impl FileReaderMethods for FileReader {
FileReaderResult::String(ref string) =>
StringOrObject::String(string.clone()),
FileReaderResult::ArrayBuffer(ref arr_buffer) => {
StringOrObject::Object(Heap::new((*arr_buffer.ptr.get()).to_object()))
StringOrObject::Object(RootedTraceableBox::new(
Heap::new((*arr_buffer.ptr.get()).to_object())))
}
})
}