Function pio_diagnostic_target 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pio_diagnostic_target(
    diagnostics: *const PioDiagnostics,
    index: usize,
) -> PioStringView

Borrow this diagnostic’s value element locator, or an empty view when absent.

Safety

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