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-rw-r--r--include/mbgl/util/string.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/mbgl/util/string.hpp b/include/mbgl/util/string.hpp
index 1cca386e21..f8a63acdf9 100644
--- a/include/mbgl/util/string.hpp
+++ b/include/mbgl/util/string.hpp
@@ -53,6 +53,8 @@ std::string toString(float, bool decimal = false);
std::string toString(double, bool decimal = false);
std::string toString(long double, bool decimal = false);
+std::string toHex(size_t);
+
inline std::string toString(std::exception_ptr error) {
assert(error);