[Bug libc/4359] the __freading function is not compatible with Solaris

["bruno at clisp dot org" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From bruno at clisp dot org  2007-10-13 11:12 -------
Thank you. This change allows to describe what __freading returns in a quite
precise way, as follows. Also, it makes __freading symmetric to __fwriting.


/* Return true if the stream STREAM is opened read-only, or if the
   last operation on the stream was a read operation.  Return false if
   the stream is opened write-only or append-only, or if it supports
   writing and there is no current read operation (such as fputc).

   freading and fwriting will never both be true.  If STREAM supports
   both reads and writes, then:
     - both freading and fwriting might be false when the stream is first
       opened, after read encounters EOF, or after fflush,
     - freading might be false or true and fwriting might be false
       after repositioning (such as fseek, fsetpos, or rewind),
   depending on the underlying implementation.  */
extern int __freading (FILE *stream);


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http://sourceware.org/bugzilla/show_bug.cgi?id=4359

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