diff options
| -rw-r--r-- | src/src/arc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/src/arc.c b/src/src/arc.c index ddf73959c..53d06de67 100644 --- a/src/src/arc.c +++ b/src/src/arc.c @@ -382,7 +382,7 @@ static uschar * arc_insert_hdr(arc_ctx * ctx, header_line * h, unsigned off, unsigned hoff, BOOL instance_only) { -int i; +unsigned i; arc_set * as; arc_line * al = store_get(sizeof(arc_line)), ** alp; uschar * e; @@ -395,6 +395,7 @@ if ((e = arc_parse_line(al, h, off, instance_only))) return US"line parse"; } if (!(i = arc_instance_from_hdr(al))) return US"instance find"; +if (i > 50) return US"overlarge instance number"; if (!(as = arc_find_set(ctx, i))) return US"set find"; if (*(alp = (arc_line **)(US as + hoff))) return US"dup hdr"; |