Infer variance of types with respect to the region parameter.

A similar approach could be used for type parameters. Fixes #2282.
2012-08-09 09:59:50 -07:00
parent 8185ede1fa
commit 511e7626ae
33 changed files with 720 additions and 232 deletions
--- a/src/libcore/task.rs
+++ b/src/libcore/task.rs
@@ -770,6 +770,7 @@ enum AncestorList = option<unsafe::Exclusive<AncestorNode>>;
 fn access_group<U>(x: &TaskGroupArc, blk: fn(TaskGroupInner) -> U) -> U {
    unsafe { x.with(blk) }
 }
+
 #[inline(always)]
 fn access_ancestors<U>(x: &unsafe::Exclusive<AncestorNode>,
                       blk: fn(x: &mut AncestorNode) -> U) -> U {