From: Fletcher T. Penney <fletcher@fletcherpenney.net>
Date: Sun, 30 Jul 2017 18:48:07 +0000 (-0400)
Subject: FIXED: Fix potential crash
X-Git-Tag: 6.2.0^2~7
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=604619f7994f317a51a09e104aa5b1688851fab4;p=multimarkdown

FIXED: Fix potential crash
---

diff --git a/Sources/libMultiMarkdown/mmd.c b/Sources/libMultiMarkdown/mmd.c
index 1385975..70fe0a3 100644
--- a/Sources/libMultiMarkdown/mmd.c
+++ b/Sources/libMultiMarkdown/mmd.c
@@ -544,43 +544,48 @@ void mmd_assign_line_type(mmd_engine * e, token * line) {
 			break;
 
 		case TEXT_NUMBER_POSS_LIST:
-			switch (source[first_child->next->start]) {
-				case ' ':
-				case '\t':
-					line->type = LINE_LIST_ENUMERATED;
-					first_child->type = MARKER_LIST_ENUMERATOR;
-
-					switch (first_child->next->type) {
-						case TEXT_PLAIN:
-
-							// Strip whitespace between bullet and text
-							while (char_is_whitespace(source[first_child->next->start])) {
-								first_child->next->start++;
-								first_child->next->len--;
-							}
+			if (first_child->next) {
+				switch (source[first_child->next->start]) {
+					case ' ':
+					case '\t':
+						line->type = LINE_LIST_ENUMERATED;
+						first_child->type = MARKER_LIST_ENUMERATOR;
 
-							break;
+						switch (first_child->next->type) {
+							case TEXT_PLAIN:
 
-						case INDENT_SPACE:
-						case INDENT_TAB:
-						case NON_INDENT_SPACE:
-							t = first_child;
+								// Strip whitespace between bullet and text
+								while (char_is_whitespace(source[first_child->next->start])) {
+									first_child->next->start++;
+									first_child->next->len--;
+								}
 
-							while (t->next && ((t->next->type == INDENT_SPACE) ||
-							                   (t->next->type == INDENT_TAB) ||
-							                   (t->next->type == NON_INDENT_SPACE))) {
-								tokens_prune(t->next, t->next);
-							}
+								break;
 
-							break;
-					}
+							case INDENT_SPACE:
+							case INDENT_TAB:
+							case NON_INDENT_SPACE:
+								t = first_child;
 
-					break;
+								while (t->next && ((t->next->type == INDENT_SPACE) ||
+								                   (t->next->type == INDENT_TAB) ||
+								                   (t->next->type == NON_INDENT_SPACE))) {
+									tokens_prune(t->next, t->next);
+								}
 
-				default:
-					line->type = LINE_PLAIN;
-					first_child->type = TEXT_PLAIN;
-					break;
+								break;
+						}
+
+						break;
+
+					default:
+						line->type = LINE_PLAIN;
+						first_child->type = TEXT_PLAIN;
+						break;
+				}
+			} else {
+				line->type = LINE_LIST_ENUMERATED;
+				first_child->type = MARKER_LIST_ENUMERATOR;
 			}
 
 			break;