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trynpbg1.c (505B)

      1 #include <stddef.h>
      2 #include <unistd.h>
      3 #include "select.h"
      4 #include "open.h"
      5 #include "fifo.h"
      6 
      7 #define FN "temp-trynpbg1.fifo"
      8 
      9 int main(void)
     10 {
     11   int flagbug;
     12   struct timeval instant;
     13   fd_set rfds;
     14  
     15   flagbug = 0;
     16   if (fifo_make(FN,0600) != -1) {
     17     close(0);
     18     if (open_read(FN) == 0) {
     19       FD_ZERO(&rfds);
     20       FD_SET(0,&rfds);
     21       instant.tv_sec = instant.tv_usec = 0;
     22       if (select(1,&rfds,NULL,NULL,&instant) > 0)
     23         flagbug = 1;
     24     }
     25     unlink(FN);
     26   }
     27   return !flagbug;
     28 }