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Added Freeze trait to CowArc

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This commit is contained in:
Colin Sherratt 2013-12-31 16:14:58 -05:00
parent 06a8d59ded
commit 4f462a0506
1 changed files with 2 additions and 2 deletions
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4
src/libextra/arc.rs
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@ -559,7 +559,7 @@ pub struct CowArc<T> { priv x: UnsafeArc<T> }
/// mutation of the contents if there is only a single reference to
/// the data. If there are multiple references the data is automatically
/// cloned and the task modifies the cloned data in place of the shared data.
impl<T:Clone+Send> CowArc<T> {
impl<T:Clone+Send+Freeze> CowArc<T> {
/// Create a copy-on-write atomically reference counted wrapper
#[inline]
pub fn new(data: T) -> CowArc<T> {
@ -583,7 +583,7 @@ impl<T:Clone+Send> CowArc<T> {
}
}
impl<T:Clone+Send> Clone for CowArc<T> {
impl<T:Clone+Send+Freeze> Clone for CowArc<T> {
/// Duplicate a Copy-on-write Arc. See arc::clone for more details.
#[inline]
fn clone(&self) -> CowArc<T> {