From 05e485879c1b21553799a5a321b78e4dd412494f Mon Sep 17 00:00:00 2001
From: Howard Hinnant <hhinnant@apple.com>
Date: Tue, 1 Nov 2011 23:13:37 +0000
Subject: Fix ratio arithmetic with zero

llvm-svn: 143519
---
 libcxx/include/ratio | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libcxx/include/ratio')

diff --git a/libcxx/include/ratio b/libcxx/include/ratio
index 4ef66c5..654cb33 100644
--- a/libcxx/include/ratio
+++ b/libcxx/include/ratio
@@ -90,6 +90,12 @@ struct __static_gcd<_Xp, 0>
     static const intmax_t value = _Xp;
 };
 
+template <>
+struct __static_gcd<0, 0>
+{
+    static const intmax_t value = 1;
+};
+
 // __static_lcm
 
 template <intmax_t _Xp, intmax_t _Yp>
-- 
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