From 4765bb9cb87bcac5fecc0f02cea5dc0eca1c347d Mon Sep 17 00:00:00 2001
From: Julian Orth <ju.orth@gmail.com>
Date: Tue, 21 Oct 2014 08:12:50 +0200
Subject: [PATCH] Use strlen in CString::len

---
 src/librustrt/c_str.rs | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/src/librustrt/c_str.rs b/src/librustrt/c_str.rs
index a4129fe3506..0ef0601828d 100644
--- a/src/librustrt/c_str.rs
+++ b/src/librustrt/c_str.rs
@@ -275,15 +275,7 @@ impl Collection for CString {
     /// Return the number of bytes in the CString (not including the NUL terminator).
     #[inline]
     fn len(&self) -> uint {
-        let mut cur = self.buf;
-        let mut len = 0;
-        unsafe {
-            while *cur != 0 {
-                len += 1;
-                cur = cur.offset(1);
-            }
-        }
-        return len;
+        unsafe { libc::strlen(self.buf) as uint }
     }
 }