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In grid_duplicate_lines, if the line is empty (cellsize == 0) then clear

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the destination celldata pointer rather than leaving a stale copy of the
source pointer (which may later be freed). Fixes a crash found by
Kuang-che Wu.
This commit is contained in:
nicm 2015-08-24 22:49:13 +00:00
parent 58b659a26e
commit 3219e0314e
1 changed files with 2 additions and 1 deletions
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3
grid.c
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@ -652,7 +652,8 @@ grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
srcl->cellsize, sizeof *dstl->celldata); srcl->cellsize, sizeof *dstl->celldata);
memcpy(dstl->celldata, srcl->celldata, memcpy(dstl->celldata, srcl->celldata,
srcl->cellsize * sizeof *dstl->celldata); srcl->cellsize * sizeof *dstl->celldata);
} } else
dstl->celldata = NULL;
sy++; sy++;
dy++; dy++;