From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: Fix an assertion failure caused by \z\[u00FF] with -Tps/-Tpdf.
Date: Sun, 8 Jan 2017 13:17:28 -0500 (EST) [thread overview]
Message-ID: <14245323693583419593.enqueue@fantadrom.bsd.lv> (raw)
Log Message:
-----------
Fix an assertion failure caused by \z\[u00FF] with -Tps/-Tpdf.
Reported by jsg@ after an afl(1) run long ago.
Modified Files:
--------------
mdocml:
term.c
Revision Data
-------------
Index: term.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/term.c,v
retrieving revision 1.258
retrieving revision 1.259
diff -Lterm.c -Lterm.c -u -p -r1.258 -r1.259
--- term.c
+++ term.c
@@ -1,7 +1,7 @@
/* $Id$ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2016 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2017 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -606,8 +606,20 @@ encode(struct termp *p, const char *word
if (ASCII_HYPH == word[i] ||
isgraph((unsigned char)word[i]))
encode1(p, word[i]);
- else
+ else {
p->buf[p->col++] = word[i];
+
+ /*
+ * Postpone the effect of \z while handling
+ * an overstrike sequence from ascii_uc2str().
+ */
+
+ if (word[i] == '\b' &&
+ (p->flags & TERMP_BACKBEFORE)) {
+ p->flags &= ~TERMP_BACKBEFORE;
+ p->flags |= TERMP_BACKAFTER;
+ }
+ }
}
}
--
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