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 Post subject: strict aliasing
PostPosted: Wed Dec 05, 2012 4:52 pm 
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Joined: Fri Mar 04, 2011 9:36 pm
Posts: 500
這裡有一篇深入淺出的文章說明strict aliasing。
http://blog.tinlans.org/2010/01/09/strict-aliasing/


為了避免optimization之後,code錯誤,請不要把pointer做cast。

若一定要做pointer的casting,
則可以用選項-fno-strict-aliasing來避免錯誤,
但是這會造成optimize部份功能沒作用,使得程式碼變大。

結論...請不要對pointer做cast


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