+/*
+ * Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace,
+ * see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480.
+ */
+namespace fmt {
+template <>
+struct formatter<std::type_info> : formatter<std::string> {
+ template <typename FormatCtx>
+ typename FormatCtx::iterator format(const std::type_info& type_info, FormatCtx& ctx)
+ {
+ int status;
+ auto demangled_name = abi::__cxa_demangle(type_info.name(), nullptr, 0, &status);
+ auto it = status == 0 ? formatter<std::string>::format(demangled_name, ctx) :
+ formatter<std::string>::format(type_info.name(), ctx);
+
+ free(demangled_name);
+ return it;
+ }
+};
+} /* namespace fmt */
+