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Do not use recallocarray because the stored size may have changed during

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reflow so may not match what it expects, fixes crash reported by Caspar
Schutijser.
This commit is contained in:
nicm
2026-03-06 08:09:58 +00:00
parent 41bddae907
commit 2c7f73f9c4
1 changed files with 7 additions and 4 deletions
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11
grid.c
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@@ -495,7 +495,7 @@ static void
grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
{
struct grid_line *gl;
u_int xx, old_cellsize;
u_int xx;
gl = &gd->linedata[py];
if (sx <= gl->cellsize)
@@ -508,10 +508,13 @@ grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
else if (gd->sx > sx)
sx = gd->sx;
old_cellsize = gl->cellsize;
gl->celldata = xrecallocarray(gl->celldata, old_cellsize, sx,
gl->celldata = xreallocarray(gl->celldata, sx,
sizeof *gl->celldata);
for (xx = old_cellsize; xx < sx; xx++)
if (gl->cellsize < sx) {
memset(gl->celldata + gl->cellsize, 0,
(sx - gl->cellsize) * sizeof *gl->celldata);
}
for (xx = gl->cellsize; xx < sx; xx++)
grid_clear_cell(gd, xx, py, bg);
gl->cellsize = sx;
}