[issue40223] Add -fwrapv for new icc versions

[Stefan Krah]

Stefan Krah <stefan at bytereef.org> added the comment:

icc does not like the label reordering from:

   ddd1949fea59f256e51191540a4446f75ed608fa


This is one step further, but not much. Possibilities are still:

   1) The reordering exposes an overflow.

   2) The new ordering is not supported by icc, it introduces UB
      that is masked by -fwrapv (again, does -fwrapv only disable
      a single optimization? My guess is that it disables several).


This was found by automated bisecting, I still have no time to really
investigate what is going on.

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<https://bugs.python.org/issue40223>
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