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       fflush.c - scc - simple c99 compiler
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       ---
       fflush.c (265B)
       ---
            1 #include <stdio.h>
            2 
            3 #include "../libc.h"
            4 
            5 #undef fflush
            6 
            7 int
            8 fflush(FILE *fp)
            9 {
           10         int err;
           11 
           12         if (fp)
           13                 return _flsbuf(fp);
           14 
           15         err = 0;
           16         for (fp = __iob; fp < &__iob[FOPEN_MAX]; ++fp) {
           17                 if ((fp->flags & _IOWRITE) != 0 && _flsbuf(fp))
           18                         err = EOF;
           19         }
           20         return err;
           21 }