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-rw-r--r--boost/spirit/home/support/char_class.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/boost/spirit/home/support/char_class.hpp b/boost/spirit/home/support/char_class.hpp
index 574a25e7c7..c9c6e51c27 100644
--- a/boost/spirit/home/support/char_class.hpp
+++ b/boost/spirit/home/support/char_class.hpp
@@ -26,6 +26,7 @@
#if defined(BOOST_MSVC)
# pragma warning(push)
+# pragma warning(disable: 4127) // conditional expression is constant
# pragma warning(disable: 4800) // 'int' : forcing value to bool 'true' or 'false' warning
#endif