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comparison src/hardcopy.c @ 27453:c7f614c9ceb3 v8.2.4255

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patch 8.2.4255: theoretical computation overflow Commit: https://github.com/vim/vim/commit/d5cec1f1f055316c353cfa15ad8d5eb0952d50a0 Author: =?UTF-8?q?Dundar=20G=C3=B6c?= <gocdundar@gmail.com> Date: Sat Jan 29 15:19:23 2022 +0000 patch 8.2.4255: theoretical computation overflow Problem: Theoretical computation overflow. Solution: Perform multiplication in a wider type. (closes https://github.com/vim/vim/issues/9657)
author Bram Moolenaar <Bram@vim.org>
date Sat, 29 Jan 2022 16:30:03 +0100
parents c9474ae175f4
children fb4c30606b4a
comparison
equal deleted inserted replaced
27452:81af1f0ff8ce 27453:c7f614c9ceb3
2767 { 2767 {
2768 // In portrait printing the fixed point is the top left corner so we 2768 // In portrait printing the fixed point is the top left corner so we
2769 // derive the bbox from that point. We have the expected cpl chars 2769 // derive the bbox from that point. We have the expected cpl chars
2770 // across the media and lpp lines down the media. 2770 // across the media and lpp lines down the media.
2771 bbox[1] = (int)(top - (psettings->lines_per_page + prt_header_height()) 2771 bbox[1] = (int)(top - (psettings->lines_per_page + prt_header_height())
2772 * prt_line_height); 2772 * (double)prt_line_height);
2773 bbox[2] = (int)(left + psettings->chars_per_line * prt_char_width 2773 bbox[2] = (int)(left + psettings->chars_per_line
2774 + 0.5); 2774 * (double)prt_char_width + 0.5);
2775 bbox[3] = (int)(top + 0.5); 2775 bbox[3] = (int)(top + 0.5);
2776 } 2776 }
2777 else 2777 else
2778 { 2778 {
2779 // In landscape printing the fixed point is the bottom left corner so we 2779 // In landscape printing the fixed point is the bottom left corner so we
2780 // derive the bbox from that point. We have lpp chars across the media 2780 // derive the bbox from that point. We have lpp chars across the media
2781 // and cpl lines up the media. 2781 // and cpl lines up the media.
2782 bbox[1] = (int)bottom; 2782 bbox[1] = (int)bottom;
2783 bbox[2] = (int)(left + ((psettings->lines_per_page 2783 bbox[2] = (int)(left + ((psettings->lines_per_page
2784 + prt_header_height()) * prt_line_height) + 0.5); 2784 + prt_header_height()) * prt_line_height) + 0.5);
2785 bbox[3] = (int)(bottom + psettings->chars_per_line * prt_char_width 2785 bbox[3] = (int)(bottom + psettings->chars_per_line
2786 + 0.5); 2786 * (double)prt_char_width + 0.5);
2787 } 2787 }
2788 prt_dsc_ints("BoundingBox", 4, bbox); 2788 prt_dsc_ints("BoundingBox", 4, bbox);
2789 // The media width and height does not change with landscape printing! 2789 // The media width and height does not change with landscape printing!
2790 prt_dsc_docmedia(prt_mediasize[prt_media].name, 2790 prt_dsc_docmedia(prt_mediasize[prt_media].name,
2791 prt_mediasize[prt_media].width, 2791 prt_mediasize[prt_media].width,
2795 if (!prt_out_mbyte || prt_use_courier) 2795 if (!prt_out_mbyte || prt_use_courier)
2796 prt_dsc_font_resource("DocumentNeededResources", &prt_ps_courier_font); 2796 prt_dsc_font_resource("DocumentNeededResources", &prt_ps_courier_font);
2797 if (prt_out_mbyte) 2797 if (prt_out_mbyte)
2798 { 2798 {
2799 prt_dsc_font_resource((prt_use_courier ? NULL 2799 prt_dsc_font_resource((prt_use_courier ? NULL
2800 : "DocumentNeededResources"), &prt_ps_mb_font); 2800 : "DocumentNeededResources"), &prt_ps_mb_font);
2801 if (!prt_custom_cmap) 2801 if (!prt_custom_cmap)
2802 prt_dsc_resources(NULL, "cmap", prt_cmap); 2802 prt_dsc_resources(NULL, "cmap", prt_cmap);
2803 } 2803 }
2804 2804
2805 // Search for external resources VIM supplies 2805 // Search for external resources VIM supplies