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+++ This bug was initially created as a clone of Bug #597793 +++

Description of problem:
the function fileno crash the program, if called with NULL parameter
according to the documentation it should return -1 and set errno

Version-Release number of selected component (if applicable):
glibc-2.12.90-1.i686

How reproducible:
alvays

Steps to Reproduce:
compille and run:
#include <stdio.h>

int
main()
{
printf ("%d\n", fileno (NULL));
}
  
Actual results:
SIGSEGV

Expected results:
-1

NULL is not a pointer to a stream.