[Bug middle-end/61294] [4.9 Regression] erroneous memset used with constant zero length parameter warning

[siddhesh at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61294

--- Comment #13 from Siddhesh Poyarekar <siddhesh at redhat dot com> ---
Fixed in glibc:

commit 1721f0a406e52f976f9daf6f59acf42c1dbd33ff
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Thu Nov 27 11:15:45 2014 +0530

    Don't use __warn_memset_zero_len for gcc-5.0 or newer

    gcc now warns when the arguments to memset may have been accidentally
    transposed (i.e. length set to zero instead of the byte), so we don't
    need that bit of the code in glibc headers anymore.

    Tested on x86_64.  Coe generated by gcc 4.8 is identical with or
    without the patch.  I also tested gcc master, which does not result in
    any new failures.  It does fail quite a few FORTIFY_SOURCE tests, but
    those failures are not due to this patch.