On Wed, Oct 30, 2019 at 02:50:02PM +0000, Oleinik, Alexander wrote:
> +static char *qos_build_main_args()

Please use func(void) in C.  In C () functions have unspecified and
unchecked arguments whereas in C++ () means (void).  We want the
compiler to complain if arguments are passed to this function, so it
needs to be (void).

> +{
> +    char **path = fuzz_path_vec;
> +    QOSGraphNode *test_node;
> +    GString *cmd_line = g_string_new(path[0]);
> +    void *test_arg;
> +
> +    /* Before test */
> +    current_path = path;
> +    test_node = qos_graph_get_node(path[(g_strv_length(path) - 1)]);
> +    test_arg = test_node->u.test.arg;
> +    if (test_node->u.test.before) {
> +        test_arg = test_node->u.test.before(cmd_line, test_arg);
> +    }
> +    /* Prepend the arguments that we need */
> +    g_string_prepend(cmd_line,
> +            "qemu-system-i386 -display none -machine accel=qtest -m 64 ");

Does i386 need to be hardcoded?  An earlier patch declared a fuzz_arch
or similar variable (from TARGET_NAME).