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-rw-r--r--boost/smart_ptr/detail/yield_k.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/smart_ptr/detail/yield_k.hpp b/boost/smart_ptr/detail/yield_k.hpp
index 44d1836478..f8ca6b6467 100644
--- a/boost/smart_ptr/detail/yield_k.hpp
+++ b/boost/smart_ptr/detail/yield_k.hpp
@@ -33,7 +33,7 @@
// BOOST_SMT_PAUSE
-#if defined(_MSC_VER) && _MSC_VER >= 1310 && ( defined(_M_IX86) || defined(_M_X64) )
+#if defined(_MSC_VER) && _MSC_VER >= 1310 && ( defined(_M_IX86) || defined(_M_X64) ) && !defined(__c2__)
extern "C" void _mm_pause();