diff -ruN boost_1_52_0.old/libs/locale/src/icu/formatter.cpp boost_1_52_0/libs/locale/src/icu/formatter.cpp
--- boost_1_52_0.old/libs/locale/src/icu/formatter.cpp	2014-09-09 07:28:04.649410945 +0200
+++ boost_1_52_0/libs/locale/src/icu/formatter.cpp	2014-09-09 07:26:35.161410651 +0200
@@ -58,7 +58,7 @@
             virtual string_type format(int64_t value,size_t &code_points) const
             {
                 icu::UnicodeString tmp;
-                icu_fmt_->format(value,tmp);
+                icu_fmt_->format(::int64_t(value),tmp);
                 code_points=tmp.countChar32();
                 return cvt_.std(tmp);
             }