test-getsubopt.c

   1 #if defined(__linux__) || defined(__MINT__)
   2 # define _GNU_SOURCE /* getsubopt() */
   3 #endif
   4
   5 #include <stdlib.h>
   6
   7 extern char *suboptarg;
   8
   9 int
  10 main(void)
  11 {
  12         char buf[] = "k=v";
  13         char *options = buf;
  14         char token0[] = "k";
  15         char *const tokens[] = { token0, NULL };
  16         char *value = NULL;
  17         return( ! (0 == getsubopt(&options, tokens, &value)
  18             && suboptarg == buf && value == buf+2 && options == buf+3));
  19 }