If a table contained at least one complete line

and on its last line, the first T{ remained unclosed,
roff_parseln() never returned ROFF_TBL for that last line,
so {man,mdoc}_addspan() never got called for that last line,
so we ended up with a table
where no line associated with a node had TBL_SPAN_LAST set,
so tbl_term() never free()'d the cols in struct roffcol,
so tblcalc() crashed on the NULL == tbl->cols assertion
when starting the *next* table in the same file.

Fix this by returning ROFF_TBL as soon as we open a data cell,
not only when finishing it - as explained above, it may never
get properly closed but instead be interrupted by .TE.

Problem reported by bentley@ in latex2man.1.

I love it when bugs take half a day to debug but
the fix turns out to be flipping one single bit in the source code.

1 files changed, 2 insertions, 2 deletions

diff --git a/tbl_data.c b/tbl_data.c
index 9b48aa69..7413aa2d 100644
--- a/tbl_data.c
+++ b/tbl_data.c
@@ -1,4 +1,4 @@
-/*	$Id: tbl_data.c,v 1.26 2013/05/31 21:37:17 schwarze Exp $ */
+/*	$Id: tbl_data.c,v 1.27 2013/06/01 04:56:50 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -102,7 +102,7 @@ data(struct tbl_node *tbl, struct tbl_span *dp,
 
 	if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
 		tbl->part = TBL_PART_CDATA;
-		return(0);
+		return(1);
 	}
 
 	assert(*pos - sv >= 0);