ivalidate_clean_spaces(i_ctx_t *i_ctx_p)
{
    if (gs_debug_c('?')) {
        ref_stack_cleanup(&d_stack);
        ref_stack_cleanup(&e_stack);
        ref_stack_cleanup(&o_stack);
        ivalidate_spaces();
    }
}

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.