From 835540e0c710d0fcef85cc4e79f3200d559bc2c9 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Tue, 1 Sep 2020 18:25:27 +0000
Subject: Ignore unreasonably large spacing modifiers in tbl layouts.

Jan Schreiber <jes at posteo dot de> ran afl on mandoc and it turned
out mandoc tried to use spacing modifiers so large that they would
trigger assertion failures in term_ascii.c, function locale_advance().
---
 mandoc.1 | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'mandoc.1')

diff --git a/mandoc.1 b/mandoc.1
index cfc4f093..38dd795d 100644
--- a/mandoc.1
+++ b/mandoc.1
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: August 27 2020 $
+.Dd $Mdocdate: September 1 2020 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -1850,6 +1850,10 @@ The invalid character is discarded.
 A table layout specification contains an opening parenthesis,
 but no matching closing parenthesis.
 The rest of the input line, starting from the parenthesis, has no effect.
+.It Sy "ignoring excessive spacing in tbl layout"
+.Pq tbl
+A spacing modifier in a table layout is unreasonably large.
+The default spacing of 3n is used instead.
 .It Sy "tbl without any data cells"
 .Pq tbl
 A table does not contain any data cells.
-- 
cgit v1.2.3-56-ge451