example/lambda/error.h

   1 #ifndef ORDER_EXAMPLE_LAMBDA_ERROR_H_VAJK20040620
   2 #define ORDER_EXAMPLE_LAMBDA_ERROR_H_VAJK20040620
   3
   4 // (C) Copyright Vesa Karvonen 2004.
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // (See accompanying file LICENSE.)
   8
   9 // `error(fmt, ...)' prints the formatted string, along with the
  10 // prefix "ERROR: " and the suffix "\n", to `stderr' and then calls
  11 // `exit(EXIT_FAILURE)' to terminate the program.
  12 extern void error(const char* fmt, ...);
  13
  14 // `ERROR_exit(fmt, ...)' calls `error(fmt, ...)'. This macro is
  15 // written in such a way that a compiler can decuce that control
  16 // will never return from the code generated by the macro.
  17 #define ERROR_exit(...)                         \
  18 do {                                            \
  19   error(__VA_ARGS__);                           \
  20   while (1) {}                                  \
  21 } while (0)
  22
  23 #endif