From e6f0f7d52d69d0c4f290ac32c6eebf92bbf6dd81 Mon Sep 17 00:00:00 2001
From: arcnmx <arcnmx@users.noreply.github.com>
Date: Sat, 7 Nov 2015 12:22:04 -0500
Subject: Only retain external static symbols across LTO

---
 src/libsyntax/attr.rs | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/attr.rs b/src/libsyntax/attr.rs
index cc5f30e2184..e2654375736 100644
--- a/src/libsyntax/attr.rs
+++ b/src/libsyntax/attr.rs
@@ -316,6 +316,13 @@ pub fn find_export_name_attr(diag: &Handler, attrs: &[Attribute]) -> Option<Inte
     })
 }
 
+pub fn contains_extern_indicator(attrs: &[Attribute]) -> bool {
+    contains_name(attrs, "no_mangle") ||
+        contains_name(attrs, "link_section") ||
+        contains_name(attrs, "linkage") ||
+        contains_name(attrs, "export_name")
+}
+
 #[derive(Copy, Clone, PartialEq)]
 pub enum InlineAttr {
     None,
-- 
cgit 1.4.1-3-g733a5