patch 8.2.4255: theoretical computation overflow
Problem: Theoretical computation overflow.
Solution: Perform multiplication in a wider type. (closes #9657)
diff --git a/src/hardcopy.c b/src/hardcopy.c
index c99dc5f..a41f330 100644
--- a/src/hardcopy.c
+++ b/src/hardcopy.c
@@ -2769,9 +2769,9 @@
// derive the bbox from that point. We have the expected cpl chars
// across the media and lpp lines down the media.
bbox[1] = (int)(top - (psettings->lines_per_page + prt_header_height())
- * prt_line_height);
- bbox[2] = (int)(left + psettings->chars_per_line * prt_char_width
- + 0.5);
+ * (double)prt_line_height);
+ bbox[2] = (int)(left + psettings->chars_per_line
+ * (double)prt_char_width + 0.5);
bbox[3] = (int)(top + 0.5);
}
else
@@ -2782,8 +2782,8 @@
bbox[1] = (int)bottom;
bbox[2] = (int)(left + ((psettings->lines_per_page
+ prt_header_height()) * prt_line_height) + 0.5);
- bbox[3] = (int)(bottom + psettings->chars_per_line * prt_char_width
- + 0.5);
+ bbox[3] = (int)(bottom + psettings->chars_per_line
+ * (double)prt_char_width + 0.5);
}
prt_dsc_ints("BoundingBox", 4, bbox);
// The media width and height does not change with landscape printing!
@@ -2797,7 +2797,7 @@
if (prt_out_mbyte)
{
prt_dsc_font_resource((prt_use_courier ? NULL
- : "DocumentNeededResources"), &prt_ps_mb_font);
+ : "DocumentNeededResources"), &prt_ps_mb_font);
if (!prt_custom_cmap)
prt_dsc_resources(NULL, "cmap", prt_cmap);
}