Function rf_error 

pub unsafe fn rf_error(msg: &str) -> !

Raise an R error with the given message.

This is a thin wrapper around Rf_error for use in method shims. It never returns (diverges to R’s error handler).

Arguments

• msg - Error message to display

Safety

• Must be called on R’s main thread
• Never returns (uses R’s Rf_error which longjmps)

Example

if argc != 2 {
    unsafe { rf_error("expected 2 arguments, got {argc}"); }
}