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Auto merge of #23843 - emilio:insta-boom, r=SimonSapin

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Don't insta-free in UniqueArc::assume_init.

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bors-servo 2019-07-25 10:37:43 -04:00 • committed by GitHub
commit adefd2cdfc
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1 changed files with 7 additions and 1 deletions
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8
components/servo_arc/lib.rs
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@ -125,6 +125,12 @@ impl<T> UniqueArc<T> {
.unwrap_or_else(|| alloc::handle_alloc_error(layout))
.cast::<ArcInner<mem::MaybeUninit<T>>>();
ptr::write(&mut p.as_mut().count, atomic::AtomicUsize::new(1));
#[cfg(feature = "gecko_refcount_logging")]
{
NS_LogCtor(p.as_ptr() as *mut _, b"ServoArc\0".as_ptr() as *const _, 8)
}
UniqueArc(Arc {
p,
phantom: PhantomData,
@ -144,7 +150,7 @@ impl<T> UniqueArc<mem::MaybeUninit<T>> {
#[inline]
pub unsafe fn assume_init(this: Self) -> UniqueArc<T> {
UniqueArc(Arc {
p: this.0.p.cast(),
p: mem::ManuallyDrop::new(this).0.p.cast(),
phantom: PhantomData,
})
}