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[Bug libc/10932] libio use isatty() but don't take care of -ENOTTY


------- Additional Comments From yann at droneaud dot fr  2009-11-09 21:56 -------
Created an attachment (id=4375)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=4375&action=view)
Improved test case (use ferror() and feof())

Here is another version of the test case which use ferror() and feof() to
distinguish EOF roots (rationale:
<http://www.opengroup.org/onlinepubs/9699919799/functions/fgetc.html> )

Without fix:

  $ ./stdio-errno /dev/null
  fscanf() returned EOF
  feof() returned true
  >>> fscanf() failed: 25 Inappropriate ioctl for device
  fgetc() returned EOF
  feof() returned true
  >>> fgetc() failed: 25 Inappropriate ioctl for device

  $ ./stdio-errno /dev/zero
  fscanf() failed to parse anything
  fgetc() returned 0 (0x00000000)
  >>> fgetc() failed: 25 Inappropriate ioctl for device

With fix:

  $ ../scm/glibc-build/testrun.sh ./stdio-errno /dev/null
  fscanf() returned EOF
  feof() returned true
  fgetc() returned EOF
  feof() returned true

  $ ../scm/glibc-build/testrun.sh ./stdio-errno /dev/zero
  fscanf() failed to parse anything
  fgetc() returned 0 (0x00000000)


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
Attachment #4371 is|0                           |1
           obsolete|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=10932

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