===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/read.c,v
retrieving revision 1.182
retrieving revision 1.183
diff -c -r1.182 -r1.183
*** src/usr.bin/mandoc/read.c	2019/01/11 17:03:43	1.182
--- src/usr.bin/mandoc/read.c	2019/03/19 16:25:38	1.183
***************
*** 1,4 ****
! /*	$OpenBSD: read.c,v 1.182 2019/01/11 17:03:43 schwarze Exp $ */
  /*
   * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2010-2019 Ingo Schwarze <schwarze@openbsd.org>
--- 1,4 ----
! /*	$OpenBSD: read.c,v 1.183 2019/03/19 16:25:38 schwarze Exp $ */
  /*
   * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2010-2019 Ingo Schwarze <schwarze@openbsd.org>
***************
*** 253,258 ****
--- 253,260 ----
  		/* XXX Ugly hack to mark the end of the input. */
  
  		if (i == blk.sz || blk.buf[i] == '\0') {
+ 			if (pos + 2 > ln.sz)
+ 				resize_buf(&ln, 256);
  			ln.buf[pos++] = '\n';
  			ln.buf[pos] = '\0';
  		}