http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55820



--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-12-28 
04:07:14 UTC ---

yes this code is undefined at compile time.  GCC used to reject #define in a

macro usage but it was decided we will accept that.  I can find the old bugs if

needed.

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