===================================================================
RCS file: /cvs/mandoc/TODO,v
retrieving revision 1.220
retrieving revision 1.221
diff -u -p -r1.220 -r1.221
--- mandoc/TODO	2016/07/31 09:29:13	1.220
+++ mandoc/TODO	2016/08/02 11:09:46	1.221
@@ -1,6 +1,6 @@
 ************************************************************************
 * Official mandoc TODO.
-* $Id: TODO,v 1.220 2016/07/31 09:29:13 schwarze Exp $
+* $Id: TODO,v 1.221 2016/08/02 11:09:46 schwarze Exp $
 ************************************************************************
 
 Many issues are annotated for difficulty as follows:
@@ -619,6 +619,13 @@ Several areas can be cleaned up to make mandoc even fa
 ************************************************************************
 * structural issues
 ************************************************************************
+
+- POSIX says in the documentation of sysconf(3) that PATH_MAX
+  is allowed to be so large that it is a bad idea to use it
+  for sizing static buffers.  So use dynamic buffers throughout.
+  See the file test-PATH_MAX.c for details.
+  Found by Aaron M. Ucko in the GNU Hurd via Bdale Garbee,
+  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=829624
 
 - We use the input line number at several places to distinguish
   same-line from different-line input.  That plainly doesn't work