[Bug c/58943] [4.7/4.8/4.9 Regression] wrong calculation of indirect structure member arithmetic via function call

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58943

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jsm28 at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If anything, this would be a C FE request for a change like PR45437 that made
into the C++ FE.  The question is if we want to do this only for flag_isoc11,
or also older.  Handling it during gimplification or later is impossible,
because
the difference between x[0] |= x[0] | f (); and x[0] = x[0] | f (); is already
lost there.