All related functions were already so marked.
extern ErrorData *CopyErrorData(void);
extern void FreeErrorData(ErrorData *edata);
extern void FlushErrorState(void);
-extern void ReThrowError(ErrorData *edata);
+extern void ReThrowError(ErrorData *edata) __attribute__((noreturn));
extern void pg_re_throw(void) __attribute__((noreturn));
/* Hook for intercepting messages before they are sent to the server log */