[Bug c/37771] New: warning: implicit declaration of function 'fileno'

[mathieu dot malaterre at gmail dot com]

The following piece of code should compile without warning:

#include <stdio.h>

int main()
{
  (void)fileno(0);
  return 0;
}


Using:

$ gcc  -Wall -W -pedantic -ansi -Werror f.c                                     
cc1: warnings being treated as errors
f.c: In function 'main':
f.c:5: warning: implicit declaration of function 'fileno'


With:
$ gcc --version                                                                 
gcc (GCC) 4.2.3 (Debian 4.2.3-3)
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


thanks


-- 
           Summary:  warning: implicit declaration of function 'fileno'
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mathieu dot malaterre at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37771