On Wed, Mar 6, 2013, at 10:06, Jonathan Leffler wrote: On Tue, Mar 5, 2013 at 11:13 PM, Alan Barrett <[1]apb@cequrux.com> wrote: On Tue, 05 Mar 2013, Arthur David Olson wrote: The code in question dates back to when "long" was the longest integer type available with all compilers ("long long" was not universal then). Today, intmax_t is the longest integer type. Perhaps most of the longs in zic.t should be changed to intmax_t. Does Microsoft's MSVC (which is a C89 compiler) have support for intmax_t (and <stdint.h> or <inttypes.h>)? Does the TZ code have to work with Microsoft compilers? The latest version supports <stdint.h>, but NOT inttypes.h or printf("%jd" [etc]). I am unsure whether it supports long long (the headers are still full of __int64), but it does support %lld. I don't know what version these features were added in. References 1. mailto:apb@cequrux.com