[Bug middle-end/51255] Using -fwhole-program breaks code which puts values in .ctors or .init_array

[carlos at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51255

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |carlos at redhat dot com

--- Comment #7 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Krisztian Kocsis from comment #6)
> I currently know that glibc uses it but don't know who else use it.
> In my projects I always use constructor/destructor attributes because with
> them I can control the exection order.

Internally glibc uses attribute used to mark any special .init_array sections
as used. It is only in our configure check and some tests that we don't use the
used attribute (bug in glibc). Building the library with -fwhole-program has
never been tested and likely won't succeed without a lot of additional work.