[Bug c++/52985] Postincrement not applied after indexing ternary array expression

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52985

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-04-16
          Component|middle-end                  |c++
     Ever Confirmed|0                           |1
      Known to fail|                            |4.7.1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-16 
09:42:31 UTC ---
Confirmed.  The gimplification looks bogus:

                      if (flag != 0) goto <D.24453>; else goto <D.24454>;
                      <D.24453>:
                      D.24018 = __gnu_cxx::__normal_iterator<const int*,
std::vector<int> >::operator++ (&it, 0);
                      cleanup.1 = 1;
                      D.24458 = __gnu_cxx::__normal_iterator<const int*,
std::vector<int> >::operator* (&D.24018);
                      D.24459 = *D.24458;
                      goto <D.24460>;
                      <D.24454>:
                      D.24461 = __gnu_cxx::__normal_iterator<const int*,
std::vector<int> >::operator* (&D.24018);
                      D.24462 = *D.24461;
                      <D.24460>:

it is only incremented on one arm.