1 files changed, 3 insertions, 0 deletions
diff --git a/src/cmark.c b/src/cmark.c
index 2ef6cb4..da93abe 100644
--- a/src/cmark.c
+++ b/src/cmark.c
@@ -36,6 +36,9 @@ char *cmark_markdown_to_html(const char *text, size_t len, int options) {
   char *result;
 
   doc = cmark_parse_document(text, len, options);
+  if (doc == NULL) {
+    return NULL;
+  }
 
   result = cmark_render_html(doc, options);
   cmark_node_free(doc);