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sixel: overwrite_by_row: handle case where 'width' goes past end of row

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Cap 'width' to maximum number of columns available.
This commit is contained in:
Daniel Eklöf 2020-07-07 10:42:59 +02:00
parent b1214bf635
commit 3063204289
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1 changed files with 4 additions and 1 deletions
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sixel.c
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@ -367,11 +367,14 @@ sixel_overwrite_by_row(struct terminal *term, int _row, int col, int width)
assert(_row >= 0);
assert(_row < term->rows);
assert(col >= 0);
assert(col + width <= term->grid->num_cols);
assert(col < term->grid->num_cols);
if (likely(tll_length(term->grid->sixel_images) == 0))
return;
if (col + width > term->grid->num_cols)
width = term->grid->num_cols - col;
const int row = (term->grid->offset + _row) & (term->grid->num_rows - 1);
const int scrollback_rel_row = rebase_row(term, row);