Added test case for conc336

unittest/libmariadb/conc336.c

@@ -0,0 +1,45 @@
+#include "my_test.h"
+
+#define MAX_COUNT 4000
+
+int main(int argc, char *argv[]) {
+
+	MYSQL *mysql;
+	int i;
+
+  if (argc > 1)
+    get_options(argc, argv);
+
+  get_envvars();
+
+	for (i = 0; i < MAX_COUNT; ++i) {
+
+		if (mysql_library_init(-1, NULL, NULL) != 0) {
+			diag("mysql_library_init failed");
+			return 1;
+		}
+
+		mysql = mysql_init(NULL);
+		if (!mysql) {
+			diag("mysql_init failed");
+			return 1;
+		}
+
+		if (!mysql_real_connect(mysql, hostname, username, password, NULL, port, NULL, 0)) {
+			diag("mysql_real_connect failed: %s", mysql_error(mysql));
+			return 1;
+		}
+
+		if (mysql_query(mysql, "SELECT NULL LIMIT 0") != 0) {
+			diag("mysql_query failed: %s", mysql_error(mysql));
+			return 1;
+		}
+
+		mysql_close(mysql);
+		mysql_library_end();
+
+	}
+
+	return 0;
+
+}