Added const qualifier to bin_hex_formatter to support c++20

2 years ago · 8b8bc20f30
parent 3cd06a3d40
commit 8b8bc20f30
1 changed files with 1 additions and 1 deletions
--- a/include/spdlog/fmt/bin_to_hex.h
+++ b/include/spdlog/fmt/bin_to_hex.h
@ -156,7 +156,7 @@ struct formatter<spdlog::details::dump_info<T>, char>
    // format the given bytes range as hex
    template<typename FormatContext, typename Container>
-    auto format(const spdlog::details::dump_info<Container> &the_range, FormatContext &ctx) -> decltype(ctx.out())
+    auto format(const spdlog::details::dump_info<Container> &the_range, FormatContext &ctx) const -> decltype(ctx.out())
    {
        SPDLOG_CONSTEXPR const char *hex_upper = "0123456789ABCDEF";
        SPDLOG_CONSTEXPR const char *hex_lower = "0123456789abcdef";