[Bug c++/15330] inconsistent slicing on cast of int to enum

bangerth at dealii dot org gcc-bugzilla@gcc.gnu.org
Thu May 6 21:54:00 GMT 2004


------- Additional Comments From bangerth at dealii dot org  2004-05-06 21:54 -------
No, the change was fully intentional. 
 
Possible optimizations involve applying bitmasks. For example, 
  enum E { a=0x100 }; 
  E foo (); 
 
  int bar () { 
    return foo() & 0x200; 
  } 
can clearly be optimized away. If gcc isn't already doing such things, 
then it will very likely do in the future. 
 
W. 
   

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15330



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