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-rw-r--r--src/libstd/to_str.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/to_str.rs b/src/libstd/to_str.rs
index d15c0a31f5f..bfda92d46a2 100644
--- a/src/libstd/to_str.rs
+++ b/src/libstd/to_str.rs
@@ -44,7 +44,7 @@ impl<A:ToStr> ToStr for (A,) {
     fn to_str(&self) -> ~str {
         match *self {
             (ref a,) => {
-                ~"(" + a.to_str() + ",)"
+                fmt!("(%s,)", (*a).to_str())
             }
         }
     }
@@ -95,7 +95,7 @@ impl<A:ToStr,B:ToStr> ToStr for (A, B) {
         //let &(ref a, ref b) = self;
         match *self {
             (ref a, ref b) => {
-                ~"(" + a.to_str() + ", " + b.to_str() + ")"
+                fmt!("(%s, %s)", (*a).to_str(), (*b).to_str())
             }
         }
     }