before this change, we use runtime format string to format error
messages. but it does not have the compile time format check.
if we pass arguments which are not formattable, {fmt} throws at
runtime, instead of error out at compile-time. this could be very
annoying, because we format error messages at the error handling
path. but if user ends up seeing an exception for {fmt} instead
of a nice error message, it would be far from helpful.
in this change, we
- use compile-time format string
- fix two caller sites, where we pass `std::exception_ptr` to
{fmt}, but `std::exception_ptr` is not formattable by {fmt} at
the time of writing. we do have operator<< based formatter for
it though. so we delegate to `fmt::streamed` to format it.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#19294
5c41073e00