[patch] Fix BZ 19165 -- overflow in fread / fwrite

[Siddhesh Poyarekar]

On Monday 26 October 2015 09:19 AM, Paul Pluzhnikov wrote:
> Attached patch fixes BZ 19165 by failing fwrite when the byte count is
> impossibly large, and by returning actual count from fread, instead of
> approximation of it. Tested on Linux/x86_64, no new failures.
> 
> 
> 2015-10-25  Paul Pluzhnikov  <ppluzhnikov@google.com>
> 
>         [BZ #19165]
>         * libio/iofread.c (_IO_fread): Return correct count.
>         * ibio/iofread_u.c (__fread_unlocked): Likewise.
>         * libio/iofwrite.c (_IO_fwrite): Error on overflow.
>         * libio/iofwrite_u.c (fwrite_unlocked): Likewise.

Looks OK to me.

Siddhesh