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-rw-r--r--boost/format/parsing.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/format/parsing.hpp b/boost/format/parsing.hpp
index 27c53ba8d7..04ddf368e1 100644
--- a/boost/format/parsing.hpp
+++ b/boost/format/parsing.hpp
@@ -50,7 +50,7 @@ namespace detail {
# else
(void) fac; // remove "unused parameter" warning
using namespace std;
- return isdigit(c);
+ return isdigit(c) != 0;
#endif
}