[HEADSUP] Change to __sFile structure (was Re: [PATCH] Do not break buffers in fvwrite for unbuffered files)

[Corinna Vinschen]

On Oct 21 13:35, Corinna wrote:
> On Oct 21 10:36, Federico wrote:
> > -	  w = fp->_write (ptr, fp->_cookie, p, MIN (len, BUFSIZ));
> > +	  w = fp->_write (ptr, fp->_cookie, p, len);
> [...]
> Here's my Proposal:
> 
> We introduce a new define called _READ_WRITE_BUFSIZE_TYPE.  It is used
> as the type of the `count' parameter for the _read and _write methods in
> struct __sFILE.  It's set to int by default for backward compatibility.
> Interested targets can set it to the more correct size_t in
> include/sys/config.h.
> 
> Here's a patch.  Please check if that's ok for your targets.  In theory,
> it shouldnt change anything for existing targets, unless you define your
> own _READ_WRITE_BUFSIZE_TYPE.  I'm going to do so for Cygwin, if the
> patch is ok.

The patchset is missing a patch to fflush.c:

	* libc/stdio/fflush.c (__sflush_r): Change type of local variables
	n and t to _READ_WRITE_BUFSIZE_TYPE and _READ_WRITE_RETURN_TYPE.


Index: libc/stdio/fflush.c
===================================================================
RCS file: /cvs/src/src/newlib/libc/stdio/fflush.c,v
retrieving revision 1.18
diff -u -p -r1.18 fflush.c
--- libc/stdio/fflush.c	10 Apr 2013 18:47:46 -0000	1.18
+++ libc/stdio/fflush.c	21 Oct 2013 14:41:41 -0000
@@ -75,7 +75,8 @@ _DEFUN(__sflush_r, (ptr, fp),
        register FILE * fp)
 {
   register unsigned char *p;
-  register int n, t;
+  register _READ_WRITE_BUFSIZE_TYPE n;
+  register _READ_WRITE_RETURN_TYPE t;
 
   t = fp->_flags;
   if ((t & __SWR) == 0)


Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat
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