Function pio_subsystem_set_name 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pio_subsystem_set_name(
    set: *const PioSubsystemSet,
    index: usize,
    error: *mut *mut PioError,
) -> PioStringView

Read one subsystem name by zero based position, in the file’s own order.

Safety

Pointers and handles must satisfy the crate-level safety requirements.