Hi, line 391: sb_range = sb_ymax - sb_ymin; line 393: posy = ((start_pos - sb_ymin) * range) / sb_range;
and line 425: sb_range = sb_xmax - sb_xmin; line 427: posx = ((start_pos - sb_xmin) * range) / sb_range; If sb_ymax=sb_ymin then or sb_xmax=sb_xmin, sb_range == 0! How exaclty this division by zero is not executed? Best. Ranier. ________________________________________ De: Antonio Scuri <antonio.sc...@gmail.com> Enviado: sexta-feira, 19 de janeiro de 2018 11:22 Para: IUP discussion list. Assunto: Re: [Iup-users] CID 210649 (#2-4 of 4): Division or modulo by zero (DIVIDE_BY_ZERO) If sb_range=0 then sb_ymax=sb_ymin then the scrollbar is not shown, then this code is not called. Best, Scuri 2018-01-19 0:29 GMT-02:00 Ranier VF <ranier_...@hotmail.com<mailto:ranier_...@hotmail.com>>: Hi, Issue found by Coverity Scan. CID 210649 (#2-4 of 4): Division or modulo by zero (DIVIDE_BY_ZERO) divide_by_zero: In expression (start_pos - sb_ymin) * range / sb_range, division by expression sb_range which may be zero has undefined behavior. --- a\srcglcontrols\iup_glscrollbars.c Wed Apr 05 16:52:32 2017 +++ b\srcglcontrols\iup_glscrollbars.c Fri Jan 19 00:28:01 2018 @@ -390,7 +390,12 @@ range = ymax - ymin - 2 * sb_size; sb_range = sb_ymax - sb_ymin; - posy = ((start_pos - sb_ymin) * range) / sb_range; + if (sb_range != 0) + { + posy = ((start_pos - sb_ymin) * range) / sb_range; + } else { + posy = 0; + } posy += ymin + sb_size; posy += diff_y; Best. Ranier. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Iup-users mailing list Iup-users@lists.sourceforge.net<mailto:Iup-users@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/iup-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Iup-users mailing list Iup-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/iup-users
