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Fix infinite loop due to underflow when redrawing scrollbar, from Pavel

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Lavrukhin in GitHub issue 4932.
This commit is contained in:
nicm
2026-05-12 09:32:49 +00:00
parent 800837ff3f
commit 27a00d1bfd
1 changed files with 8 additions and 2 deletions
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10
screen-redraw.c
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@@ -1108,11 +1108,17 @@ screen_redraw_draw_scrollbar(struct screen_redraw_ctx *ctx,
if (sb_x >= sx || sb_y >= sy)
return;
imax = sb_w + sb_pad;
if ((int)imax + sb_x > sx)
if ((int)imax + sb_x > sx) {
if (sb_x >= sx)
return;
imax = sx - sb_x;
}
jmax = sb_h;
if ((int)jmax + sb_y > sy)
if ((int)jmax + sb_y > sy) {
if (sb_y >= sy)
return;
jmax = sy - sb_y;
}
for (j = 0; j < jmax; j++) {
py = sb_y + j;