5.05.2017 12:32 Andrea Zagli via gtk-list <gtk-list@xxxxxxxxx> wrote: > > > is it normal that if i pass values out of range to function > g_date_time_new_local it returns a valida date? > > glib 2.50.3 debian sid > > try this code: it returns 2017-03-02, instead i expected NULL > [cut] The documentation of g_date_time_new_local says: [1] "This call is equivalent to calling g_date_time_new()…" [2] while g_date_time_new says: "day [must be] between 1 and 28, 29, 30 or 31 depending on the month and the year." and then: "It not considered a programmer error for the values to this function to be out of range, but in the case that they are, the function will return NULL." So, again: * day must be in a valid range for the given month, the documentation does not say it must be <=31, neither it says it may be any number and it will be recalculated into a valid day of another month, * it is not an error if the value is out of range (and 30 of February is out of range) so the program will not crash and will not display a critical error message but it clearly says the function will return NULL, * also the documentation mentions the dates which are not representable or ambiguous due to the DST changes but 30 of February is not unrepresentable, it's just out of range. Having read this it seems to me to be a bug. Either the code must be fixed to reflect the documentation or the documentation must be changed to reflect the code. Of course my opinion is not authoritative so the proper authors are welcome to answer. Best regards, Rafal [1] https://developer.gnome.org/glib/stable/glib-GDateTime.html#g-date-time-new-local [2] https://developer.gnome.org/glib/stable/glib-GDateTime.html#g-date-time-new _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list
