libsyntax: Forbid mutable vectors. rs=demuting

3 files changed, 4 insertions, 6 deletions

diff --git a/src/libstd/sort.rs b/src/libstd/sort.rs
index d2515df3e1b..75f38da5a19 100644
--- a/src/libstd/sort.rs
+++ b/src/libstd/sort.rs
@@ -455,8 +455,7 @@ impl<T:Copy + Ord> MergeState<T> {
                 base2: uint, len2: uint) {
         assert len1 != 0 && len2 != 0 && base1+len1 == base2;
 
-        let tmp = vec::cast_to_mut(
-            vec::slice(array, base1, base1+len1).to_vec());
+        let mut tmp = vec::slice(array, base1, base1+len1).to_vec();
 
         let mut c1 = 0;
         let mut c2 = base2;
@@ -559,8 +558,7 @@ impl<T:Copy + Ord> MergeState<T> {
                 base2: uint, len2: uint) {
         assert len1 != 1 && len2 != 0 && base1 + len1 == base2;
 
-        let tmp = vec::cast_to_mut(
-            vec::slice(array, base2, base2+len2).to_vec());
+        let mut tmp = vec::slice(array, base2, base2+len2).to_vec();
 
         let mut c1 = base1 + len1 - 1;
         let mut c2 = len2 - 1;
diff --git a/src/libstd/stats.rs b/src/libstd/stats.rs
index fb6f80a6500..7dafdec95e0 100644
--- a/src/libstd/stats.rs
+++ b/src/libstd/stats.rs
@@ -52,7 +52,7 @@ impl Stats for &[f64] {
 
     fn median(self) -> f64 {
         assert self.len() != 0;
-        let tmp = vec::cast_to_mut(vec::from_slice(self));
+        let mut tmp = vec::from_slice(self);
         sort::tim_sort(tmp);
         if tmp.len() & 1 == 0 {
             let m = tmp.len() / 2;
diff --git a/src/libstd/test.rs b/src/libstd/test.rs
index e14e9665216..bfeaf8400bc 100644
--- a/src/libstd/test.rs
+++ b/src/libstd/test.rs
@@ -377,7 +377,7 @@ pub fn run_tests_console(opts: &TestOpts,
 
 fn print_failures(st: @ConsoleTestState) {
     st.out.write_line(~"\nfailures:");
-    let failures = vec::cast_to_mut(st.failures.map(|t| t.name.to_str()));
+    let mut failures = st.failures.map(|t| t.name.to_str());
     sort::tim_sort(failures);
     for vec::each(failures) |name| {
         st.out.write_line(fmt!("    %s", name.to_str()));