[Bug libc/25246] Unaligned memory access in _dl_sort_maps()

fweimer at redhat dot com sourceware-bugzilla@sourceware.org
Tue Dec 3 16:48:00 GMT 2019


https://sourceware.org/bugzilla/show_bug.cgi?id=25246

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |fweimer at redhat dot com
         Resolution|---                         |INVALID
              Flags|                            |security-

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Yes, unaligned loads are pretty efficient on x86 nowadays, and a lot of code
makes use of them. There is even a GCC optimization which turns 4 byte loads
into an int load, irrespective of alignment.

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