[Bug string/19907] Incorrect memcpy tests

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=19907

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b976eee1c3de6113362429e28ffaea672644cb5e

commit b976eee1c3de6113362429e28ffaea672644cb5e
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Apr 4 09:38:30 2016 -0700

    Clear destination buffer updated by the previous run

    Clear the destination buffer updated by the previous run in bench-memcpy.c
    and test-memcpy.c to catch the error when the following implementations do
    copy anything.

        PR string/19907
        * benchtests/bench-memcpy.c (do_one_test): Clear the destination
        buffer updated by the previous run.
        * string/test-memcpy.c (do_one_test): Likewise.
        * benchtests/bench-memmove.c (do_one_test): Add a comment.
        * string/test-memmove.c (do_one_test): Likewise.

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