1 #include "select.h"

     2 #include "open.h"

     3 #include "fifo.h"

     4 

     5 #define FN "temp-trynpbg1.fifo"

     6 

     7 void main()

     8 {

     9   int flagbug;

    10   struct timeval instant;

    11   fd_set rfds;

    12  

    13   flagbug = 0;

    14   if (fifo_make(FN,0600) != -1) {

    15     close(0);

    16     if (open_read(FN) == 0) {

    17       FD_ZERO(&rfds);

    18       FD_SET(0,&rfds);

    19       instant.tv_sec = instant.tv_usec = 0;

    20       if (select(1,&rfds,(fd_set *) 0,(fd_set *) 0,&instant) > 0)

    21         flagbug = 1;

    22     }

    23     unlink(FN);

    24   }

    25   _exit(!flagbug);

    26 }