Thanks very much for tracking down the problem! I've pushed a repair. At Tue, 8 Nov 2016 17:31:53 -0500, Jon Zeppieri wrote: > I think Robby is right and the problem is here: > https://github.com/racket/racket/blob/4ce947da74d09abc9cda10a14e7407cda9386a44/ > racket/src/racket/src/fun.c#L9876 > > Well, that and the next line. There's only a `return 1;` for the case where > the given day-of-month is less than the DST change's day-of-month, but no > `return 0;` for the case where it's greater. All of the other comparisons > use the `dtxCOMP` macro, which handles both cases: > > ``` > # define dtxCOMP(f) if (a->f < b->f) return 1; if (a->f > b->f) return 0; > ``` > > Does that sound right? I don't have a Windows system at the moment, and I > can't reproduce on OS X. > > > - Jon > > > > > On Tue, Nov 8, 2016 at 2:29 PM, Robby Findler <ro...@eecs.northwestern.edu> > wrote: > > > find-seconds returns a number, not a date? Maybe seconds->date is the > > culprit here? > > > > Robby > > > > On Tue, Nov 8, 2016 at 12:32 PM, George Neuner <gneun...@comcast.net> > > wrote: > > > > > > Racket 6.6 on Windows 7. > > > > > > find-seconds is getting the time zone wrong when local-time? is #t. > > > Somehow it is in daylight saving all through November. > > > > > > When local-time? is #f (UTC) the time zone and hour offset are > > > correct. [At least for "fall back", didn't check "spring ahead"] > > > > > > > > > > > > (for* [(m '(11 12)) > > > (d (in-range 1 31)) > > > #:unless [and (= m 12)(> d 5)] > > > ] > > > (println (seconds->date (find-seconds 0 0 0 d m 2016 #t)))) > > > > > > => > > > (date* 0 0 0 1 11 2016 2 305 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 2 11 2016 3 306 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 3 11 2016 4 307 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 4 11 2016 5 308 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 5 11 2016 6 309 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 6 11 2016 0 310 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 7 11 2016 1 311 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 8 11 2016 2 312 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 9 11 2016 3 313 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 10 11 2016 4 314 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 11 11 2016 5 315 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 12 11 2016 6 316 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 13 11 2016 0 317 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 14 11 2016 1 318 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 15 11 2016 2 319 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 16 11 2016 3 320 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 17 11 2016 4 321 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 18 11 2016 5 322 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 19 11 2016 6 323 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 20 11 2016 0 324 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 21 11 2016 1 325 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 22 11 2016 2 326 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 23 11 2016 3 327 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 24 11 2016 4 328 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 25 11 2016 5 329 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 26 11 2016 6 330 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 27 11 2016 0 331 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 28 11 2016 1 332 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 29 11 2016 2 333 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 30 11 2016 3 334 #t -14400 0 "Eastern Daylight Time") > > > (date* 0 0 0 1 12 2016 4 335 #f -18000 0 "Eastern Standard Time") > > > (date* 0 0 0 2 12 2016 5 336 #f -18000 0 "Eastern Standard Time") > > > (date* 0 0 0 3 12 2016 6 337 #f -18000 0 "Eastern Standard Time") > > > (date* 0 0 0 4 12 2016 0 338 #f -18000 0 "Eastern Standard Time") > > > (date* 0 0 0 5 12 2016 1 339 #f -18000 0 "Eastern Standard Time") > > > > > > > > > George > > > > > > -- > > > You received this message because you are subscribed to the Google > > Groups "Racket Users" group. > > > To unsubscribe from this group and stop receiving emails from it, send > > an email to racket-users+unsubscr...@googlegroups.com. > > > For more options, visit https://groups.google.com/d/optout. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to racket-users+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout.
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