On non-Linux systems (e.g. macOS, BSD), st.st_ctime may not be
of the right type for PRIx64 ; so just cast it to an uint64_t,
which is the type PRIx64 corresponds to.
Also, clang may warn about "/"+(*dirprefix ? 0 : 1), suspecting
a coding error. Using (*dirprefix ? "/" : "") is unambiguous and
also easier to grok for some people (e.g. myself ;-)).
On non-Linux systems (e.g. macOS, BSD), st.st_ctime may not be of the right type for PRIx64 ; so just cast it to an uint64_t, which is the type PRIx64 corresponds to.
Also, clang may warn about
"/"+(*dirprefix ? 0 : 1), suspecting a coding error. Using(*dirprefix ? "/" : "")is unambiguous and also easier to grok for some people (e.g. myself ;-)).