From 472b6182485c2ef8361d4675749efe377f4b6614 Mon Sep 17 00:00:00 2001
From: klutzy <klutzytheklutzy@gmail.com>
Date: Sun, 24 Nov 2013 18:42:40 +0900
Subject: [PATCH] std::rt: Fix crate_map on Win64

---
 src/libstd/rt/crate_map.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/libstd/rt/crate_map.rs b/src/libstd/rt/crate_map.rs
index 987b32c08467..76ccacb331fe 100644
--- a/src/libstd/rt/crate_map.rs
+++ b/src/libstd/rt/crate_map.rs
@@ -56,7 +56,12 @@ pub fn get_crate_map() -> Option<&'static CrateMap<'static>> {
 
     let sym = unsafe {
         let module = dl::open_internal();
-        let sym = do "__rust_crate_map_toplevel".with_c_str |buf| {
+        let rust_crate_map_toplevel = if cfg!(target_arch = "x86") {
+            "__rust_crate_map_toplevel"
+        } else {
+            "_rust_crate_map_toplevel"
+        };
+        let sym = do rust_crate_map_toplevel.with_c_str |buf| {
             dl::symbol(module, buf)
         };
         dl::close(module);