[Bug other/42542] g++ -O3 produces incorrect results for less-than operator

["hjl dot tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #1 from hjl dot tools at gmail dot com  2009-12-29 19:41 -------
With -Wall, icc 11.1 complains:

pr42542.cc(10): remark #981: operands are evaluated in unspecified order
          return (a < b) ? b : a;
                    ^
          detected during instantiation of "_Tp std::accumulate(_InputIterator,
_InputIterator, _Tp, _BinaryOperation) [with _InputIterator=unsigned int *,
_Tp=unsigned int, _BinaryOperation=maximum<unsigned int>]" at line 25

Add "-fno-tree-vectorize" generates the correct result.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-12-29 19:41:02
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42542

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