[Bug c++/34295] Bad optimization in an inlined method

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2007-11-29 17:21 -------
The recommended (and optimized) way to do this is:

union {
   INT64 i;
   double d;
} x;
x.d = arg;
return x.i;

you can also make your way work optimized by specifying -fno-strict-aliasing.
That it works without optimization is because with that or with -O1
-fno-strict-aliasing is default.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34295