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-rw-r--r--boost/spirit/home/support/utree/detail/utree_detail2.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/spirit/home/support/utree/detail/utree_detail2.hpp b/boost/spirit/home/support/utree/detail/utree_detail2.hpp
index d4be2c5bde..cc3cb2fd43 100644
--- a/boost/spirit/home/support/utree/detail/utree_detail2.hpp
+++ b/boost/spirit/home/support/utree/detail/utree_detail2.hpp
@@ -77,7 +77,7 @@ namespace boost { namespace spirit { namespace detail
template <typename Iterator>
inline void fast_string::construct(Iterator f, Iterator l)
{
- unsigned const size = l-f;
+ std::size_t const size = static_cast<std::size_t>(l-f);
char* str;
if (size < max_string_len)
{