* mdocml: Empty conditions count as false.
@ 2014-12-15 23:43 schwarze
0 siblings, 0 replies; only message in thread
From: schwarze @ 2014-12-15 23:43 UTC (permalink / raw)
To: source
Log Message:
-----------
Empty conditions count as false.
When negated, they still count as false.
Found when investigating crashes jsg@ found with afl.
Not completely fixing the crashes yet.
Modified Files:
--------------
mdocml:
roff.c
Revision Data
-------------
Index: roff.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.c,v
retrieving revision 1.239
retrieving revision 1.240
diff -Lroff.c -Lroff.c -u -p -r1.239 -r1.240
--- roff.c
+++ roff.c
@@ -1258,6 +1258,8 @@ roff_evalcond(struct roff *r, int ln, co
wanttrue = 1;
switch (v[*pos]) {
+ case '\0':
+ return(0);
case 'n':
/* FALLTHROUGH */
case 'o':
--
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