The specification doesn't say which error should be reported, but
piglit expects BadMatch:
/* The GLX_ARB_create_context_robustness spec does not say what error
* code should be generated. However, similar cases (e.g., valid GL
* versions) specify BadMatch. This is also the behavior of NVIDIA's
* closed-source driver.
*/
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32281>
9f4ab06842