cmark

diff --git a/src/blocks.c b/src/blocks.c
@@ -435,6 +435,9 @@ cmark_node *cmark_parse_file(FILE *f)
 	while ((bytes = fread(buffer, 1, sizeof(buffer), f)) > 0) {
 		bool eof = bytes < sizeof(buffer);
 		S_parser_feed(parser, buffer, bytes, eof);
+		if (eof) {
+			break;
+		}
 	}
 
 	document = cmark_parser_finish(parser);

diff --git a/src/main.c b/src/main.c
@@ -71,6 +71,9 @@ int main(int argc, char *argv[])
 		start_timer();
 		while ((bytes = fread(buffer, 1, sizeof(buffer), fp)) > 0) {
 			cmark_parser_feed(parser, buffer, bytes);
+			if (bytes < sizeof(buffer)) {
+				break;
+			}
 		}
 		end_timer("processing lines");
 
@@ -86,6 +89,9 @@ int main(int argc, char *argv[])
 
 		while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
 			cmark_parser_feed(parser, buffer, bytes);
+			if (bytes < sizeof(buffer)) {
+				break;
+			}
 		}
 	}