[Bug libstdc++/66327] -fsanitize=nonnull-attribute errors in stl_algobase.h

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66327

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Jun  8 14:42:02 2015
New Revision: 224233

URL: https://gcc.gnu.org/viewcvs?rev=224233&root=gcc&view=rev
Log:
        PR libstdc++/66354
        * include/bits/stl_algobase.h (__fill_a): Check length before calling
        memset.

        PR libstdc++/66327
        * include/bits/stl_algobase.h (__equal<true>::equal): Do not call
        memcmp for empty ranges.
        (__lexicographical_compare<true>::__lc): Likewise.

Modified:
    branches/gcc-4_9-branch/libstdc++-v3/ChangeLog
    branches/gcc-4_9-branch/libstdc++-v3/include/bits/stl_algobase.h