When a man document contains nothing at all except one or more invalid

macros, do not die on an assertion, but show correct error messages.
Assertions of meta data validity suggested by joerg@.
ok joerg@

1 files changed, 6 insertions, 1 deletions

diff --git a/usr.bin/mandoc/man_term.c b/usr.bin/mandoc/man_term.c
index 5112ec009d3..e9e6edcff81 100644
--- a/usr.bin/mandoc/man_term.c
+++ b/usr.bin/mandoc/man_term.c
@@ -1,4 +1,4 @@
-/*	$Id: man_term.c,v 1.79 2011/11/13 15:46:04 schwarze Exp $ */
+/*	$Id: man_term.c,v 1.80 2011/12/04 00:44:18 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -959,6 +959,9 @@ print_man_foot(struct termp *p, const void *arg)
 	const struct man_meta *meta;
 
 	meta = (const struct man_meta *)arg;
+	assert(meta->title);
+	assert(meta->msec);
+	assert(meta->date);
 
 	term_fontrepl(p, TERMFONT_NONE);
 
@@ -1009,6 +1012,8 @@ print_man_head(struct termp *p, const void *arg)
 	const struct man_meta *m;
 
 	m = (const struct man_meta *)arg;
+	assert(m->title);
+	assert(m->msec);
 
 	/*
 	 * Note that old groff would spit out some spaces before the