add constexpr to hex chars

7 years ago · aa47ac85c9
parent 3eadda9466
commit aa47ac85c9
1 changed files with 2 additions and 2 deletions
--- a/include/spdlog/fmt/bin_to_hex.h
+++ b/include/spdlog/fmt/bin_to_hex.h
@ -111,8 +111,8 @@ struct formatter<spdlog::details::bytes_range<T>>
    template<typename FormatContext, typename Container>
    auto format(const spdlog::details::bytes_range<Container> &the_range, FormatContext &ctx) -> decltype(ctx.out())
    {
-        const char *hex_upper = "0123456789ABCDEF";
-        const char *hex_lower = "0123456789abcdef";
+        constexpr const char *hex_upper = "0123456789ABCDEF";
+        constexpr const char *hex_lower = "0123456789abcdef";
        const char *hex_chars = use_uppercase ? hex_upper : hex_lower;

        std::size_t pos = 0;