work around ICE from default method

issue #7341

Author: thestinger

src/libstd/vec.rs

@@ -2500,7 +2500,6 @@ impl<T> FromIter<T> for ~[T]{
     }
 }
 
-#[cfg(stage0)]
 impl<A, T: Iterator<A>> FromIterator<A, T> for ~[A] {
     pub fn from_iterator(iterator: &mut T) -> ~[A] {
         let mut xs = ~[];
@@ -2511,7 +2510,7 @@ impl<A, T: Iterator<A>> FromIterator<A, T> for ~[A] {
     }
 }
 
-#[cfg(not(stage0))]
+/* FIXME: #7341 - ICE
 impl<A, T: Iterator<A>> FromIterator<A, T> for ~[A] {
     pub fn from_iterator(iterator: &mut T) -> ~[A] {
         let (lower, _) = iterator.size_hint();
@@ -2522,6 +2521,7 @@ impl<A, T: Iterator<A>> FromIterator<A, T> for ~[A] {
         xs
     }
 }
+*/
 
 #[cfg(test)]
 mod tests {