`handle_control_postdescriptor()` in src/or/control.c modifies the const char body. This is a pretty bad practice and might causes errors with non writable memory segments. ``` static int handle_control_postdescriptor(control_connection_t *conn, uint32_t len, const char *body) { char *cp = memchr(body, '\n', len); smartlist_t *args = smartlist_new(); tor_assert(cp);*cp++ = '\0'; ```