[Bug c/31734] optimizer looses ops for with aliasing

[ebotcazou at gcc dot gnu dot org]

------- Comment #3 from ebotcazou at gcc dot gnu dot org  2007-04-29 19:58 -------
> Given that "A character type may alias any other type.",
> I suppose I should be able to use (it works):
> 
> memcpy(&out->fraction, &value, 4);
> memcpy(&out->mantissa, 4+(char*)&value, 4);
> out->mantissa &= 0x7fffffff;

Right, this is valid.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31734