cmark

My personal build of CMark ✏️

Commit: 67619a5d5c71c44565a9a0413aaf78f9baece528
Parent: 9253c0eab573e5ca0d37e4b1db77d3b0bfcf3be6
Author: John MacFarlane <jgm@berkeley.edu>
Date: Tue, 28 Oct 2014 23:03:02 -0700

Disallow bracketed labels nested more than 1000 deep.

For performance reasons. See #166.

Diffstat

1 file changed, 3 insertions, 2 deletions

Status	File Name	N° Changes	Insertions	Deletions
Modified	src/inlines.c	5	3	2

diff --git a/src/inlines.c b/src/inlines.c
@@ -594,7 +594,8 @@ static int link_label(subject* subj, chunk *raw_label)
 
 	advance(subj);  // advance past [
 	unsigned char c;
-	while ((c = peek_char(subj)) && (c != ']' || nestlevel > 0)) {
+	while ((c = peek_char(subj)) &&
+	       (c != ']' || (nestlevel > 0 && nestlevel < STACK_LIMIT))) {
 		switch (c) {
 		case '`':
 			tmp = handle_backticks(subj);
@@ -622,7 +623,7 @@ static int link_label(subject* subj, chunk *raw_label)
 			advance(subj);
 		}
 	}
-	if (c == ']') {
+	if (nestlevel == 0 && c == ']') {
 		*raw_label = chunk_dup(&subj->input, startpos + 1, subj->pos - (startpos + 1));
 		subj->label_nestlevel = 0;
 		advance(subj);  // advance past ]