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Clear entire lines when removing from history or freeing.

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This commit is contained in:
nicm
2026-06-07 14:41:27 +00:00
parent 3acd247f5d
commit 42f3e7f7ce
1 changed files with 5 additions and 6 deletions
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11
grid.c
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@@ -285,9 +285,8 @@ static void
grid_free_line(struct grid *gd, u_int py)
{
free(gd->linedata[py].celldata);
gd->linedata[py].celldata = NULL;
free(gd->linedata[py].extddata);
gd->linedata[py].extddata = NULL;
memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
}
/* Free several lines. */
@@ -332,9 +331,7 @@ void
grid_destroy(struct grid *gd)
{
grid_free_lines(gd, 0, gd->hsize + gd->sy);
free(gd->linedata);
free(gd);
}
@@ -414,12 +411,14 @@ grid_collect_history(struct grid *gd, int all)
void
grid_remove_history(struct grid *gd, u_int ny)
{
u_int yy;
u_int yy, start;
if (ny > gd->hsize)
return;
start = gd->hsize + gd->sy - ny;
for (yy = 0; yy < ny; yy++)
grid_free_line(gd, gd->hsize + gd->sy - 1 - yy);
grid_free_line(gd, start + yy);
memset(&gd->linedata[start], 0, ny * sizeof *gd->linedata);
gd->hsize -= ny;
}