Rewrite each_path to allow performance improvements in the future.

Instead of determining paths from the path tag, we iterate through
modules' children recursively in the metadata. This will allow for
lazy external module resolution.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index 7d848184493..590292d0d32 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -29,6 +29,7 @@
 #[allow(missing_doc)];
 
 use cast;
+use container::Container;
 use io;
 use iterator::IteratorUtil;
 use libc;
@@ -1500,7 +1501,10 @@ mod tests {
     fn test_getenv_big() {
         let mut s = ~"";
         let mut i = 0;
-        while i < 100 { s += "aaaaaaaaaa"; i += 1; }
+        while i < 100 {
+            s = s + "aaaaaaaaaa";
+            i += 1;
+        }
         let n = make_rand_name();
         setenv(n, s);
         debug!(copy s);